Professional Tax Services

    From simple 1040s to complex business returns, our tax professionals maximize your deductions and maintain full compliance with federal and state tax laws.

    Serving individuals and small business in Denver, Aurora, Centennial, Lakewood, Colorado Springs, and all 50 states.

    • Maximize Deductions
    • Full IRS Compliance
    • Audit Defense Included
    • Year-Round Support
    • Electronic Filing
    • All 50 States

    Why Tax Filing Gets Complicated

    Most people do not overpay because they broke a rule. They overpay because income sources multiply and nobody is tracking how the pieces fit together.

    Deductions get missed

    Self-employment, rental, and investment income all carry deductions that generic software does not surface. A missed home office, mileage log, or QBI calculation costs real money.

    Notices pile up

    IRS and state letters are easy to set aside, and the interest keeps running. Having someone answer them for you removes the guesswork and the deadline pressure.

    Complexity grows quietly

    A second state, a K-1, a crypto wallet, or a new entity turns a simple return into a multi-form filing. We handle those layers so nothing slips through.

    What Our Tax Preparation Includes

    Every return type we file, from a single W-2 to multi-entity filings with owners in several states.

    Personal returns (Form 1040)

    W-2 income, dependents, itemized deductions, and credits. We compare against your prior-year return so nothing carries over incorrectly.

    Self-employment and freelance

    Schedule C filings with home office, mileage, and retirement contributions. We review your qualified business income deduction each year.

    Business entity returns

    1120, 1120-S, and 1065 filings prepared from your books. K-1s are prepared for every owner.

    Rental property (Schedule E)

    Per-property income and expense reporting with MACRS depreciation. Passive activity losses are tracked year to year.

    Investment and crypto

    Capital gains and cost basis reconciliation from brokerage and exchange activity, reported on Form 8949.

    Multi-state filing

    Part-year residency, remote work, and nexus filings. We apply credits for taxes paid to other states where they apply.

    IRS resolution

    Notice responses, installment agreements, and penalty abatement requests. Our Enrolled Agent can represent you before the IRS.

    Back taxes and unfiled years

    We reconstruct records and file missing returns to bring you current, then set a plan for staying current going forward.

    Free consultation to confirm what your situation needs before any work starts.

    Personal Tax Returns

    Form 1040 · Individual & Family Filing

    Whether you're a single filer with straightforward W-2 income or a family navigating itemized deductions, education credits, and multiple income sources, we prepare your return with precision and a commitment to maximizing every dollar you're legally entitled to keep. Our tax professionals review your entire financial picture, not just the forms in front of them.

    Every personal return includes a deduction analysis (standard vs. itemized), credit eligibility review, state tax coordination, and a year-over-year comparison to flag changes in your tax position. We don't just file, we explain what changed, why, and what you can do differently next year.

    Forms We Prepare:

    Form 1040Form 1040-SRSchedule A (Itemized)Schedule B (Interest/Dividends)Schedule D (Capital Gains)Form 8829 (Home Office)Form 8863 (Education Credits)Schedule EICForm 8962 (Premium Tax Credit)

    Deductions & Credits We Maximize

    Standard vs. Itemized Deductions

    We run both calculations to determine which saves you more. Itemizing often wins for homeowners, high-income earners, and those with significant charitable contributions or medical expenses.

    Child Tax Credit & Dependent Care

    Up to $2,000 per qualifying child under 17, plus the Child and Dependent Care Credit for daycare, after-school programs, and summer camps. We address every dependent-related credit is claimed.

    Education Credits (AOTC & LLC)

    The American Opportunity Credit provides up to $2,500 per student for the first four years of college. The Lifetime Learning Credit covers graduate school, professional development, and continuing education, up to $2,000 per return.

    Earned Income Tax Credit (EITC)

    One of the most valuable credits for low-to-moderate income workers and families. Worth up to $7,430 for qualifying families, yet millions of eligible taxpayers fail to claim it every year.

    Retirement Contribution Deductions

    Contributions to traditional IRAs, 401(k)s, and HSAs reduce your taxable income dollar-for-dollar. We calculate optimal contribution amounts based on your income, age, and retirement goals.

    Health Insurance Premium Credits

    If you purchased insurance through the marketplace, you may qualify for the Premium Tax Credit. We reconcile Form 1095-A and help you're not overpaying or underreporting.

    Mortgage Interest & Property Tax

    Deduct mortgage interest on up to $750,000 of qualified residence loans, plus state and local taxes (SALT) up to 0,000. We track these annually and advise on strategies to maximize the benefit.

    Charitable Contributions

    Cash donations, non-cash contributions (clothing, furniture, vehicles), and qualified charitable distributions from IRAs. We maintain proper documentation and valuation for every gift.

    Common Filing Scenarios We Handle:

    Single filers with W-2 income and standard deduction
    Married filing jointly with dual incomes and dependents
    Head of household with custody considerations
    Married filing separately for liability protection or student loan strategies
    Seniors (Form 1040-SR) with Social Security and retirement distributions
    Recent graduates with student loan interest and education credits
    Newly married couples navigating filing status optimization
    Divorced or separated individuals with alimony or property settlements

    Self-Employment & Freelancer Taxes

    Schedule C · SE Tax · Quarterly Estimates · Entity Planning

    Freelancers, independent contractors, gig workers, and solo business owners face a unique tax landscape. You're responsible for both the employee and employer share of Social Security and Medicare (15.3%), you have no employer withholding taxes for you, and the deduction landscape is both broader and more complex than W-2 employment. We specialize in making self-employment tax manageable and minimized.

    Schedule C & Schedule SE

    We prepare Schedule C reporting all business income and expenses, and calculate self-employment tax (15.3% on net earnings) on Schedule SE. We also apply the above-the-line deduction for half of SE tax, a deduction many self-preparers miss entirely.

    Quarterly Estimated Payments

    Without employer withholding, you're responsible for paying taxes quarterly. We calculate safe harbor estimates based on prior year liability or current year projections, set up payment reminders, and adjust amounts if your income changes mid-year.

    Home Office Deduction

    We evaluate both methods, simplified ($5/sq ft, max 300 sq ft = ,500) and actual (proportionate share of rent/mortgage, utilities, insurance, repairs). The actual method often yields a larger deduction, and we help protect your space meets the exclusive-use test.

    Vehicle & Mileage Deductions

    If you use a vehicle for business, we calculate both the standard mileage rate (67 cents/mile in 2024) and actual expenses (gas, insurance, depreciation, repairs), recommending whichever saves more. We help you maintain an IRS-compliant mileage log.

    Retirement Plan Contributions

    Self-employed individuals have access to powerful retirement vehicles: SEP-IRA (up to 25% of net SE income, max $69,000), Solo 401(k) (employee + employer contributions up to $69,000), and SIMPLE IRA. Each has different contribution limits and deadlines, we match the right plan to your situation.

    Health Insurance Deduction

    Self-employed individuals can deduct 100% of health, dental, and vision insurance premiums for themselves, their spouse, and dependents, but only if they're not eligible for employer-sponsored coverage elsewhere. This is an above-the-line deduction that reduces AGI.

    Entity Structure Evaluation

    At what point does forming an LLC or electing S-Corp status save you money? We run the math. Generally, once net SE income exceeds $50K-$60K, S-Corp election can save $5K- 5K+ per year by restructuring some income as distributions rather than wages subject to SE tax.

    1099-NEC / 1099-K Reconciliation

    Platforms like Upwork, Fiverr, and payment processors issue 1099-NEC or 1099-K forms. But not all income gets reported on 1099s, if a client pays you less than $600, they're not required to file one. We reconcile all income sources regardless of whether a 1099 was issued.

    Gig Economy Workers

    Driving for Uber, delivering for DoorDash, renting on Airbnb, or selling on Etsy? All of these create self-employment income with their own reporting quirks. Platform 1099-Ks may not match your actual earnings due to refunds, fees, and tips. We reconcile everything and help you're only paying tax on what you actually earned.

    Business Tax Returns

    LLC · S-Corp · C-Corp · Partnership · Nonprofit

    Business tax returns are fundamentally different from personal returns, the forms are more complex, the deadlines are earlier, and the consequences of errors are more severe. Whether you're a solo LLC or a multi-state corporation, we handle the full filing lifecycle: gathering financials, preparing the return, calculating estimated payments, and coordinating K-1 distributions to owners.

    Every business return includes a deduction optimization review, entity structure assessment, and year-over-year comparison. If we identify opportunities to restructure for tax savings, like electing S-Corp status or adjusting owner compensation, we'll raise it proactively.

    Entity Types We File

    S-Corporation (Form 1120-S)

    Pass-through entity where income flows to shareholders' personal returns via Schedule K-1. We handle reasonable compensation analysis, shareholder distributions, and state-level S-Corp elections to help you're maximizing the SE tax savings that make the S-Corp structure worthwhile.

    Form 1120-SSchedule K-1W-2 (officer compensation)State S-Corp returns

    C-Corporation (Form 1120)

    Separate taxable entity subject to the 21% flat corporate rate. We manage estimated tax payments, accumulated earnings planning, and coordination between corporate and personal returns to minimize total tax across both levels.

    Form 1120Schedule M-1/M-3Form 1125-A (COGS)State corporate returns

    Partnership / Multi-Member LLC (Form 1065)

    Informational return that allocates income, deductions, and credits to partners via K-1s. We maintain proper allocation percentages, track partner basis, handle committed to payments, and coordinate with each partner's personal return.

    Form 1065Schedule K-1 (per partner)Partner basis statementsState partnership returns

    Single-Member LLC (Schedule C)

    Disregarded entity reported on your personal return. We track all business income and expenses, calculate self-employment tax, and evaluate whether electing S-Corp status would save you money as your business grows.

    Schedule CSchedule SEForm 1040-ESState business registrations

    Nonprofit (Form 990 Series)

    Tax-exempt organizations must file annually to maintain their status. We prepare Form 990, 990-EZ, or 990-N depending on your gross receipts, and handle unrelated business income (UBIT) reporting on Form 990-T.

    Form 990 / 990-EZ / 990-NForm 990-T (UBIT)State charity registrationsSchedule A (public support test)

    Business Deductions We Capture

    Section 179 expensing (up to ,220,000 in 2024)
    Bonus depreciation on qualified assets
    Qualified Business Income (QBI) deduction, up to 20%
    Business vehicle expenses (actual vs. standard mileage)
    Health insurance premiums for self-employed owners
    Retirement plan contributions (SEP-IRA, Solo 401k, SIMPLE)
    Home office deduction (simplified or actual method)
    Business meals (50% deductible)
    Professional development and continuing education
    Software, subscriptions, and technology expenses
    Business insurance premiums
    Employee wages, benefits, and payroll taxes
    R&D tax credit assessment
    Work Opportunity Tax Credit (WOTC)

    Business Deadlines Are Earlier Than You Think

    S-Corps and partnerships are due March 15, a full month before personal returns. Late filing penalties are $220/month per shareholder or partner. We manage all deadlines and file extensions when needed.

    Rental Property Taxes

    Schedule E · Depreciation · 1031 Exchanges · Multi-Property

    Rental property taxation is one of the most complex, and most rewarding, areas of the tax code. Properly structured, real estate can generate tax-free cash flow through depreciation, defer gains through 1031 exchanges, and provide estate planning advantages through stepped-up basis. But it requires precise bookkeeping, accurate depreciation schedules, and careful compliance with passive activity rules. We handle all of it.

    Schedule E Preparation

    We prepare Schedule E for each property, tracking rental income, expenses, and depreciation separately. For investors with 3+ properties, we provide a property-level P&L summary that shows true cash flow and tax impact per unit.

    MACRS Depreciation Schedules

    Residential rental property is depreciated over 27.5 years using the Modified Accelerated Cost Recovery System (MACRS). We calculate and maintain depreciation schedules for the building, improvements, appliances, and any assets placed in service during the year.

    Cost Segregation Analysis

    For properties valued at $500K+, a cost segregation study can accelerate depreciation on components like HVAC, flooring, and landscaping, shifting them from 27.5-year to 5, 7, or 15-year schedules. This can generate significant first-year tax savings.

    Passive Activity Loss Rules

    Rental income is generally classified as passive, which limits your ability to deduct losses against active income. However, if your AGI is under 50K, you may deduct up to $25K in rental losses. Real estate professionals who meet the 750-hour material participation test can deduct unlimited losses.

    1031 Exchange Documentation

    Selling one property and buying another? A 1031 like-kind exchange defers capital gains taxes entirely. We coordinate with qualified intermediaries, track boot, and maintain proper reporting on Form 8824 so your exchange holds up under scrutiny.

    Short-Term Rental Compliance

    Airbnb, VRBO, and short-term rentals have different tax treatment depending on average rental periods and personal use days. We apply the correct tax rules, including the 14-day rule, material participation tests, and local occupancy tax compliance.

    Property Sale & Capital Gains

    When you sell a rental property, you owe taxes on capital gains and depreciation recapture (taxed at 25%). We calculate the adjusted basis, account for all improvements and selling costs, and identify strategies like installment sales or opportunity zone reinvestment to defer or reduce the tax hit.

    Multi-State Rental Reporting

    If you own rentals in multiple states, each state requires its own filing. We handle income allocation, state-specific deduction rules, and help you're claiming credits for taxes paid to other states to avoid double taxation.

    Are You a Real Estate Professional?

    If you spend 750+ hours per year in real estate activities and it represents more than half your working time, you may qualify as a Real Estate Professional. This unlocks the ability to deduct unlimited rental losses against ordinary income, a massive tax advantage. We evaluate your eligibility and help you document your hours to support the classification.

    Investment & Capital Gains Taxes

    Schedule D · Crypto · Stock Options · K-1s · FBAR

    Investment income is taxed differently depending on the type, holding period, and your overall income level. From capital gains and dividends to cryptocurrency and stock options, we apply the right tax treatment to every transaction, and look for legal strategies to reduce what you owe. Most investors leave money on the table by not harvesting losses, misclassifying gains, or missing foreign reporting requirements.

    Capital Gains & Tax-Loss Harvesting

    We calculate short-term and long-term capital gains on every sale, identify opportunities to harvest losses to offset gains, and apply the $3,000 net capital loss deduction against ordinary income. For active traders, we evaluate the wash sale rule and Section 475 mark-to-market election.

    Dividend & Interest Income

    Qualified dividends are taxed at preferential rates (0%, 15%, or 20%), while ordinary dividends and interest are taxed as regular income. We categorize every distribution correctly, reconcile 1099-DIV and 1099-INT forms, and work to reflect your portfolio's tax efficiency in your return.

    Cryptocurrency & Digital Assets

    Every crypto sale, swap, or conversion is a taxable event. We reconstruct transaction histories from exchanges like Coinbase, Binance, and Kraken, apply FIFO or specific identification cost basis methods, and report every transaction on Form 8949. We also handle staking rewards, airdrops, and DeFi income.

    Stock Options, RSUs & ESPPs

    Incentive Stock Options (ISOs), Non-Qualified Stock Options (NQSOs), Restricted Stock Units (RSUs), and Employee Stock Purchase Plans (ESPPs) all have different tax treatment. We track grant dates, exercise dates, vesting schedules, and disposition types for accurate reporting and to minimize AMT exposure.

    Retirement Account Distributions

    Traditional IRA, 401(k), and pension distributions are taxed as ordinary income. Roth distributions are tax-free if qualified. We plan distribution timing to stay in lower tax brackets, coordinate with Required Minimum Distributions (RMDs), and evaluate Roth conversion strategies.

    Net Investment Income Tax (NIIT)

    The 3.8% NIIT applies to investment income when your modified AGI exceeds $200K (single) or $250K (joint). We calculate your exposure, identify strategies to reduce MAGI, and handle accurate reporting on Form 8960.

    K-1 Partnership & Trust Income

    Investment partnerships, real estate syndications, and trusts distribute income via Schedule K-1. These forms are notoriously complex, often arriving late, and frequently contain multiple types of income requiring different treatment. We reconcile every K-1 and integrate it into your overall return.

    Foreign Investment Reporting

    If you hold foreign financial accounts exceeding 0,000 at any point during the year, you must file FinCEN 114 (FBAR). Foreign financial assets over $50K (single) or 00K (joint) require Form 8938. Penalties for non-compliance are severe, 0,000+ per violation. We handle full reporting.

    Your Tax Team Is Ready

    Our professionals handle everything from W-2 filings to complex multi-entity returns. You'll work with the same team year after year, people who know your situation and care about getting it right.

    Management professional at Centennial Accounting Group
    Management
    Tax accountant at Centennial Accounting Group
    Tax Accountant
    Senior accountant at Centennial Accounting Group
    Accountant

    "We treat every client like they're our only client."

    Schedule a Free Consultation

    State & Multi-State Filing

    Colorado Form 104 · Multi-State · Remote Workers · Part-Year

    State taxes add a layer of complexity that many tax preparers handle poorly, or ignore entirely. With 45+ states imposing income taxes, each with different rates, deductions, credits, and filing requirements, multi-state compliance requires careful attention. We specialize in Colorado state taxes and handle multi-state filings for clients with obligations in any combination of jurisdictions.

    Colorado Form 104 Preparation

    Colorado uses a flat 4.4% income tax rate with unique adjustments. We calculate Colorado subtractions (Social Security, military retirement, Colorado-sourced capital gains), apply applicable credits (child tax credit, enterprise zone, renewable energy), and handle Denver city occupational privilege tax filing.

    Multi-State Income Allocation

    If you earned income in multiple states, through remote work, travel, or business operations, each state may require a separate return. We allocate income using each state's apportionment rules, apply credits for taxes paid to other states, and help you're not double-taxed on the same income.

    Part-Year & Non-Resident Returns

    Moved to or from Colorado during the year? We prepare part-year resident returns that properly allocate income between states. For non-residents with Colorado-sourced income (rental properties, pass-through entities), we file non-resident returns to report only the Colorado portion.

    State Estimated Tax Planning

    Many states require quarterly estimated payments, and the rules differ from federal. We calculate state-level estimates, set up payment schedules, and monitor your withholding to avoid underpayment penalties, which can be especially tricky for multi-state filers.

    Remote Worker State Compliance

    Post-2020, remote work has created a tax nexus nightmare. If you live in Colorado but work for a company in another state, or vice versa, you may owe taxes in both jurisdictions. We navigate reciprocity agreements, convenience-of-the-employer rules, and telecommuter tax laws across all states.

    Common Multi-State Scenarios We Handle:

    Colorado resident working remotely for an out-of-state employer
    Business owner with operations or employees in multiple states
    Real estate investor with rental properties across state lines
    Spouse working in a different state than primary residence
    Recent relocations (part-year residency in two states)
    Commission-based workers traveling to multiple states
    Military personnel with home-of-record vs. duty station issues
    Athletes, entertainers, or consultants earning income in multiple jurisdictions
    Headquartered in Denver, filing state returns in all 50 states
    IRS Issues? We Can Help.

    IRS Resolution & Audit Defense

    Tax problems don't resolve themselves, they get worse. Penalties accrue, interest compounds, and the IRS has powerful collection tools. Whether you've received a notice, are facing an audit, or have years of unfiled returns, we provide a clear path to resolution.

    IRS Notices & Correspondence

    Received a letter from the IRS? Don't panic, and don't ignore it. We review every notice, determine the appropriate response, and handle all communication on your behalf. Most notices are routine (CP2000 income discrepancies, math error corrections, balance due reminders) and can be resolved quickly when addressed properly.

    Audit Representation

    If you're selected for an IRS examination, we provide full audit defense, from organizing documentation to representing you in person or by correspondence. We stand behind every return we prepare and have a track record of resolving audits with minimal additional tax owed. You never face the IRS alone.

    Unfiled Tax Returns

    Behind on filing? The IRS knows, and they may have already filed a Substitute for Return (SFR) on your behalf, which typically results in a higher tax bill because it includes no deductions. We prepare and file all missing returns, often significantly reducing what you owe compared to the SFR amount.

    Installment Agreements & Payment Plans

    If you owe taxes you can't pay in full, we negotiate IRS installment agreements that fit your budget. For balances under $50K, streamlined agreements are available without extensive financial disclosure. For larger amounts, we prepare a Collection Information Statement (Form 433-A/B) to establish affordable terms.

    Additional Resolution Options

    Offer in Compromise (OIC)

    In some cases, the IRS will accept less than the full amount owed. We evaluate your eligibility based on income, assets, and ability to pay, and prepare the OIC application with supporting documentation. The acceptance rate is low, but when it works, it can settle a $50K+ liability for a fraction of the balance.

    Penalty Abatement

    The IRS assesses penalties for late filing, late payment, and accuracy issues, but they also have provisions for removing penalties when you have reasonable cause. First-time penalty abatement is available to taxpayers with a clean history. We identify every avenue to reduce or eliminate penalties on your account.

    Innocent Spouse Relief

    If your spouse or former spouse understated taxes on a joint return and you didn't know about it, you may qualify for innocent spouse relief. We evaluate your situation under IRS guidelines and file Form 8857 to request equitable relief from joint liability.

    Currently Not Collectible (CNC) Status

    If paying your tax debt would create a financial hardship, we can request CNC status, which pauses collection activity. The IRS stops levies and garnishments while your account is in CNC status, and the 10-year collection statute continues to run.

    Dealing with the IRS? We've Got You.

    You don't have to navigate IRS notices or audit letters alone. Our team handles the communication so you can breathe easier.

    Risk Awareness

    Common Audit Triggers & How We Protect You

    Understanding what the IRS looks for helps you file with confidence. Here are the most common audit triggers, and the specific steps we take to protect every return we prepare.

    High Income ($200K+)

    Elevated Risk

    Higher income returns are statistically more likely to be examined. The IRS audit rate for filers earning $200K-$500K is roughly 1 in 100; for income over M, it's closer to 1 in 25. More income means more forms, more deductions, and more opportunities for errors.

    Our approach: We address every line item is supported by documentation and that high-dollar deductions are properly substantiated. For high-income clients, we also evaluate AMT exposure and NIIT applicability.

    Self-Employment / Schedule C

    High Risk

    Schedule C filers report income and expenses on their own, there's no employer verifying the numbers. The IRS knows this and examines self-employment returns at higher rates, especially when reported expenses are unusually high relative to income.

    Our approach: We maintain detailed expense categorization, require receipt documentation for large purchases, and apply conservative but thorough deduction strategies. We never inflate deductions to lower your tax bill artificially.

    Large Charitable Deductions

    Moderate to High Risk

    Charitable deductions that are disproportionately high relative to your income raise flags, especially non-cash donations like vehicles, clothing, or art. The IRS has specific substantiation requirements for donations over $250, and appraisal rules for non-cash gifts over $5,000.

    Our approach: We verify that every charitable deduction has proper documentation: written acknowledgment from the organization, fair market valuations for non-cash items, and Form 8283 for contributions over $500.

    Home Office Deduction

    Moderate Risk

    The home office deduction remains one of the most scrutinized items on a tax return. The IRS requires exclusive and regular use of a dedicated space for business, no dual-purpose rooms. However, the deduction is 100% legitimate for qualifying taxpayers and shouldn't be avoided out of fear.

    Our approach: We calculate both the simplified method ($5/sq ft, up to 300 sq ft) and the actual expense method, recommending whichever produces the larger deduction. We also support the space meets IRS requirements for exclusive use.

    Cryptocurrency Transactions

    Elevated Risk

    The IRS now asks about crypto on page 1 of Form 1040. Exchanges report transactions via 1099-DA (starting 2025), and the IRS has invested heavily in blockchain analytics. Unreported crypto income is one of the fastest-growing enforcement priorities.

    Our approach: We reconcile every transaction across all exchanges, apply correct cost basis methods, and report every taxable event on Form 8949, including swaps, staking rewards, and DeFi income. Full compliance eliminates risk.

    Rental Property Losses

    Moderate Risk

    Claiming large rental losses, especially against active income, can trigger examination. The passive activity loss rules limit deductions for most taxpayers, and the real estate professional exception requires careful documentation of 750+ hours.

    Our approach: We help rental losses are properly categorized as passive or active, apply the $25K special allowance when eligible, and help real estate professionals maintain contemporaneous time logs to support material participation.

    Unreported Income (1099 Mismatch)

    Very High Risk

    The IRS matches every 1099 filed by payers against your return. If a 1099 was issued and the income doesn't appear on your return, you'll receive a CP2000 notice, and the IRS will calculate the tax owed plus penalties. This is the most common and easily avoidable trigger.

    Our approach: We reconcile all 1099 forms (NEC, MISC, INT, DIV, K-1, B, R) against your return before filing. If you've received a 1099 you believe is incorrect, we help you dispute it with the issuer or report it with an explanation.

    Rounded Numbers on Returns

    Low to Moderate Risk

    Consistently round numbers (e.g., $5,000, 0,000, $3,000) suggest estimation rather than actual record-keeping. While the IRS allows rounding to the nearest dollar, suspiciously round figures across multiple line items can trigger closer review.

    Our approach: We report exact figures from source documents. Every number on your return traces back to a W-2, 1099, bank statement, or receipt, not an estimate.

    Real Client Scenarios

    How We've Helped Clients Like You

    Tax situations are never one-size-fits-all. Here are real examples (anonymized) of how we've solved complex problems and saved clients thousands. Each scenario illustrates a lesson that could apply to your own situation.

    The Freelancer Who Didn't Know About QBI

    4,200 saved

    The Situation

    A graphic designer earning 20K as a sole proprietor was paying taxes on the full amount. She had never heard of the Qualified Business Income (QBI) deduction and had no retirement plan in place.

    What We Did

    We applied the 20% QBI deduction ($24K off taxable income), set up a SEP-IRA with a $22,500 contribution, claimed home office and equipment deductions, and filed quarterly estimates to avoid penalties going forward.

    Key Takeaway: Self-employed individuals often leave thousands on the table by not knowing about QBI, retirement contributions, and business deductions they're entitled to.

    The Landlord Facing Depreciation Recapture

    $31,800 saved

    The Situation

    A real estate investor was selling a rental property after 8 years and expected a straightforward capital gains calculation. He didn't realize he owed depreciation recapture at 25% on top of capital gains.

    What We Did

    We calculated the adjusted basis including all improvements and selling costs, applied the correct depreciation recapture rate, identified a partial 1031 exchange opportunity for a portion of the proceeds, and coordinated with his attorney on closing timeline.

    Key Takeaway: Rental property sales involve more than capital gains, depreciation recapture can add tens of thousands to your tax bill if you're not planning for it.

    The S-Corp Owner Underpaying Salary

    $8,400 (net savings after salary adjustment) saved

    The Situation

    An S-Corp owner was taking $40K in salary and $200K in distributions. While distributions avoid self-employment tax, the IRS requires 'reasonable compensation', and $40K was far below market rate for his role.

    What We Did

    We adjusted his salary to $95K (defensible for his industry and role), restructured distributions accordingly, set up proper payroll through Gusto, and filed amended payroll returns for the prior year to preempt an IRS challenge.

    Key Takeaway: S-Corp tax savings are real, but the IRS aggressively audits unreasonably low officer salaries. Getting the balance right is critical.

    The Couple With 3 Years of Unfiled Returns

    $6,200 in refunds recovered + $3,100 in penalties abated saved

    The Situation

    A married couple with two W-2 incomes hadn't filed returns for 3 years after a family emergency. They received IRS notices and were afraid of the consequences.

    What We Did

    We prepared all 3 years of returns, discovering they were owed refunds for 2 of the 3 years. For the year with a balance due, we negotiated a penalty abatement based on reasonable cause and set up a manageable payment plan.

    Key Takeaway: Unfiled returns often result in refunds, especially for W-2 earners. The IRS is more lenient than most people think when you come forward voluntarily.

    The Remote Worker in 3 States

    $4,800 in avoided double-taxation saved

    The Situation

    A software engineer worked remotely from Colorado for a New York employer, spent 3 months working from his parents' house in California, and had stock options from a previous employer in Texas.

    What We Did

    We filed returns in Colorado (resident), New York (employer state withholding), and California (3-month presence rule), applied credits for taxes paid to other states, and properly allocated stock option income based on exercise date and state sourcing rules.

    Key Takeaway: Multi-state remote work creates filing obligations many people don't know about. Each state has different rules for when you become a taxpayer.

    The Crypto Trader With 400+ Transactions

    $9,700 (through proper cost basis and loss harvesting) saved

    The Situation

    A crypto investor had traded actively across Coinbase, Kraken, and a DeFi platform. He had 400+ taxable transactions, staking rewards, and a few NFT sales, and had never reported any of it.

    What We Did

    We imported transaction data from all platforms, reconciled wallet-to-wallet transfers, applied specific identification cost basis to minimize gains, reported every transaction on Form 8949, and filed amended returns for the prior year to correct the omission before the IRS came knocking.

    Key Takeaway: The IRS now has direct visibility into exchange data. Proactive reporting with proper cost basis methods almost always results in lower taxes than the IRS's default calculations.

    Every situation is different. Let's discuss yours.

    Schedule a Free Consultation

    How Our Tax Preparation Process Works

    Four steps from first conversation to filed return, with the same team throughout.
    1. Step 1

      Schedule a free consultation

      Book a call at a time that works for you. We talk through your situation and what changed this year.

    2. Step 2

      Review your records and prior return

      You send documents through our secure portal. We review your prior-year return and follow up on anything missing.

    3. Step 3

      Receive a tailored filing plan

      We confirm the forms and states your return needs, along with scope and fee, before any preparation starts.

    4. Step 4

      Preparation, filing, and year-round support

      Your return is prepared and reviewed a second time, then filed electronically once you approve. We stay available for notices and questions after filing.

    Step one takes about 20 minutes and there is no cost to talk.

    Why Choose Centennial Accounting Group for Taxes

    In-house Denver team

    You work with the same professionals each year, so nobody has to relearn your situation.

    Audit support on our returns

    If the IRS asks questions about a return we prepared, we handle the correspondence and documentation.

    Year-round availability

    Tax questions do not stop in April. We answer mid-year questions about payments, entity changes, and estimates.

    Complex filings welcome

    Multi-state, multi-entity, rental portfolios, and crypto activity are routine work for our team.

    What Tax Clients Say

    "I've been working with Centennial Accounting Group for over 8 years. This firm has always taken care of me. They have great prices, I trust them and I have recommended them to all my friends and family. Thank you!"
    Sam SalmanOwner, Five Stars Mechanical

    Your return is prepared and reviewed by our in-house Denver team of accounting and tax professionals. We file electronically and stay available for questions after filing.

    Read more client reviews

    Our Process

    Tax Preparation Timeline & Process

    From your first call to IRS acceptance, here's exactly how we work, with realistic timelines so you know what to expect.

    1

    Free Consultation & Engagement

    15-30 minutes

    We start with a free call to understand your tax situation, estimate complexity, and provide a clear quote. Once you engage, we set up your secure document portal and send a customized checklist based on your filing needs.

    Review prior year returns
    Identify all filing obligations
    Provide upfront pricing
    Set up secure document upload
    2

    Document Collection & Organization

    1-2 weeks

    Upload your documents to our secure portal at your own pace. We track what's received, follow up on missing items, and organize everything for preparation. Most clients complete this step within a week.

    W-2s, 1099s, K-1s, and income docs
    Deduction receipts and records
    Prior year return for comparison
    Business P&L if applicable
    3

    Return Preparation & Review

    3-7 business days

    Our tax team prepares your return, runs a multi-point accuracy review, and performs a deduction analysis. We compare year-over-year to identify changes, flag opportunities, and work so nothing was missed.

    Line-by-line preparation
    Deduction optimization (standard vs. itemized)
    Credit eligibility review
    Year-over-year comparison
    4

    Client Review & Approval

    15-30 minutes

    We walk you through your completed return, explaining what you owe (or what you're getting back), what changed from last year, and what you can do differently going forward. You review and approve before we file.

    Draft return delivery
    Explanation of key line items
    Q&A with your preparer
    Approval to file
    5

    E-Filing & Confirmation

    Same day after approval

    We e-file your return with the IRS and applicable state agencies, set up direct deposit for refunds, and provide confirmation of acceptance. You receive a PDF copy of your complete return for your records.

    Federal and state e-filing
    Direct deposit setup
    IRS acceptance confirmation
    Archived return copy for your records

    Key Tax Deadlines

    January 31Employers must send W-2s; 1099-NEC forms due
    March 15S-Corp (1120-S) and Partnership (1065) returns due
    April 15Individual (1040) and C-Corp (1120) returns due; Q1 estimated payment due
    June 16Q2 estimated tax payment due
    September 15Extended S-Corp/Partnership returns due; Q3 estimated payment due
    October 15Extended individual returns due
    January 15 (next year)Q4 estimated tax payment due
    Be Prepared

    What You'll Need to Get Started

    Gather these documents before your appointment for a faster, smoother filing process. Don't have everything? We'll help you track down what's missing.

    Income Documents

    • W-2s from all employers
    • 1099-NEC (freelance/contractor income)
    • 1099-MISC (other income, royalties)
    • 1099-INT (interest income)
    • 1099-DIV (dividend income)
    • 1099-B (stock/crypto sales)
    • 1099-R (retirement distributions)
    • 1099-K (payment platforms: Stripe, PayPal, Venmo)
    • K-1s from partnerships, S-Corps, or trusts
    • Social Security statements (SSA-1099)
    • Rental income records by property

    Deduction & Credit Records

    • Mortgage interest (Form 1098)
    • Property tax payment records
    • Charitable donation receipts and acknowledgments
    • Medical and dental expense records
    • Student loan interest (Form 1098-E)
    • Tuition payments (Form 1098-T)
    • Childcare provider information (name, address, EIN, amount)
    • State and local tax payments (SALT)
    • Energy efficiency home improvement receipts

    Self-Employment & Business Records

    • Profit & loss statement (or income/expense summary)
    • Business expense receipts and records
    • Mileage log (dates, destinations, business purpose)
    • Home office measurements (dedicated square footage)
    • Equipment purchase records for depreciation
    • Subcontractor payments and W-9s (for 1099 filing)
    • Health insurance premium statements
    • Retirement plan contribution records (SEP, Solo 401k)

    Investment & Property Records

    • Brokerage statements (1099-B, consolidated 1099)
    • Cryptocurrency exchange reports (Coinbase, Kraken, etc.)
    • Rental property income and expense summaries
    • Property purchase closing statements (HUD-1)
    • 1031 exchange documentation
    • Stock option exercise records
    • RSU vesting statements
    • Foreign financial account balances (for FBAR)

    General Items

    • Last year's tax return (federal and state)
    • Social Security numbers for all family members
    • Bank account and routing number (for refund direct deposit)
    • Health insurance forms (1095-A, 1095-B, or 1095-C)
    • Identity Protection PIN (IP PIN) if issued by IRS
    • Estimated tax payment records

    Missing documents?

    Most clients don't have everything ready when they start. We send a customized checklist based on your specific situation and follow up on missing items. Our secure portal makes it easy to upload documents as they arrive, no need to wait until you have everything.

    Schedule a Free Consultation

    Tax Preparation FAQ

    Everything you need to know about our tax preparation services, pricing, deadlines, process, and more.

    Denver tax preparation

    Tax Preparation for Denver and the Colorado Front Range

    IRS Enrolled Agents preparing business and individual returns for clients throughout the Denver metro and Front Range. Colorado state filings, multi-state returns, and year-round audit support included.

    Local response: Local drop-off, secure upload, and Denver-based review.

    Denver Metro Cities Served

    • Denver
    • Aurora
    • Lakewood
    • Centennial
    • Englewood
    • Littleton
    • Arvada
    • Westminster
    • Thornton
    • Wheat Ridge
    • Golden
    • Highlands Ranch

    Front Range Cities Served

    Headquartered at 3773 Cherry Creek N Dr, West Tower Suite 630, Denver, CO 80209 · Serving the entire Denver metro, Colorado Front Range, and all 50 states remotely.

    Ready to File? Let's Get Started.

    Book your free consultation today and let our tax professionals handle the rest, from document collection to electronic filing and year-round support.

    Schedule a Free ConsultationCall (720) 603-9700
    Headquartered in Denver, CO, serving clients in all 50 states

    Important disclosure about government services

    Centennial Accounting Group is a private accounting and tax firm. We are not a government agency and are not affiliated with, endorsed by, or acting on behalf of the IRS or the Colorado Department of Revenue. Official tax forms, filing instructions, free filing options, and taxpayer assistance are available directly from those agencies at no cost. Fees we charge are for our professional tax preparation and advisory services only.

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