New 2026 Tariffs and the .6 Trillion Revenue Gap: What Small Business Bookkeeping Must Track Now

The Trump administration's aggressive push to replace .6 trillion in lost tariff revenue is sending shockwaves through the small business community. With new tariffs of 25% on imports from Canada and Mexico and 20% on Chinese goods taking effect this month, Denver small businesses that rely on imported materials, parts, or inventory are facing an immediate and significant increase in costs. For business owners, the question isn't just how much more will I pay? — it's how do I track, report, and plan for these changes in my books?

Key Takeaways

• New 2026 tariffs add 20-25% to import costs from major trading partners, directly impacting Cost of Goods Sold (COGS)
• Accurate bookkeeping is critical to tracking tariff-related cost increases and maintaining profit margins
• Colorado businesses with cross-border supply chains need immediate chart-of-accounts updates
• Proper documentation protects you during IRS audits and supports tariff exemption claims
• Proactive tax planning can offset some tariff costs through strategic deductions and entity restructuring

Understanding the 2026 Tariff Landscape

The current tariff environment is unlike anything we've seen in modern US trade policy. Here's a breakdown of what's changed:

Tariff Rates by Country of Origin

• China: 20% tariff on all imports (up from 7.5-25% on select categories)
• Canada: 25% tariff on most goods (previously duty-free under USMCA for qualifying products)
• Mexico: 25% tariff on most goods (previously duty-free under USMCA for qualifying products)
• European Union: Proposed 10-15% tariffs under review

For a Denver restaurant sourcing avocados from Mexico, this means a direct 25% cost increase on that ingredient line item. For a construction contractor importing Canadian lumber, the same 25% premium applies. These aren't abstract policy changes — they show up on your profit and loss statement immediately.

What Your Bookkeeping Must Track Right Now

If your books aren't set up to isolate tariff-related costs, you're flying blind. Here's what our team at Centennial Accounting Group recommends every Colorado business owner implement in their accounting system today:

1. Separate Tariff Cost Tracking in Your Chart of Accounts

Create a sub-account under COGS specifically for tariff surcharges. This allows you to see at a glance how much tariffs are costing your business each month, quarter, and year. In QuickBooks, this can be set up as a sub-account of "Cost of Goods Sold" called "Import Tariff Surcharges." This one change gives you the visibility to make smarter purchasing and pricing decisions.

2. Vendor Cost Variance Reporting

Set up monthly vendor cost comparison reports. When your supplier raises prices by 15%, is that entirely tariff-driven, or are they padding margins? Without tracking historical costs line-by-line, you can't negotiate effectively. We recommend maintaining a vendor cost log that tracks:

• Unit price before tariff implementation
• Current unit price with tariff
• Percentage increase attributable to tariffs
• Alternative domestic supplier pricing

3. Landed Cost Calculations

The true cost of an imported product isn't just the invoice price. Landed cost includes the product cost, shipping, insurance, customs duties, tariffs, and any brokerage fees. Many small businesses only record the invoice price and miss the full picture. This leads to underpriced products and shrinking margins that don't show up until year-end.

4. Currency Exchange Rate Documentation

If you're paying suppliers in foreign currencies, the combination of tariffs AND exchange rate fluctuations can create significant cost volatility. Record the exchange rate on every international transaction and reconcile monthly against your bank's applied rate.

How Tariffs Impact Your Tax Return

Tariffs don't just affect your day-to-day costs — they have direct tax implications that require careful bookkeeping:

COGS Deduction Accuracy

Tariff costs paid on inventory are deductible as part of your Cost of Goods Sold. However, this only works if your books accurately capture these costs. If tariff surcharges are lumped into general expenses, you may be overstating operating expenses and understating COGS — which can trigger IRS scrutiny, especially for businesses claiming large COGS deductions.

Section 199A Qualified Business Income Impact

For pass-through entities (LLCs, S-Corps, partnerships), higher COGS from tariffs reduces your Qualified Business Income (QBI), which in turn reduces your Section 199A deduction. This is a double hit: you pay more for goods AND get a smaller tax deduction. Proper bookkeeping ensures you're maximizing every available deduction to offset this impact.

Inventory Valuation Methods Matter More Than Ever

With rapidly changing import costs, your inventory valuation method (FIFO, LIFO, or weighted average) significantly affects your taxable income. LIFO can be advantageous in a rising-cost environment because it matches your most recent (highest) costs against revenue, reducing taxable income. However, switching methods requires IRS approval via Form 3115. Our team can evaluate which method makes the most sense for your situation.

Real-World Example: A Denver Retailer's Tariff Challenge

A Denver-based e-commerce retailer importing home goods from China saw their average product cost increase by 22% overnight when the new tariffs took effect. Without proper bookkeeping, they continued selling at pre-tariff prices for three weeks, losing over 8,000 in margin. After we restructured their cost tracking with tariff-specific accounts and automated landed cost calculations, they adjusted pricing within 48 hours of any supplier cost change and recovered their margins within one month.

Strategies to Mitigate Tariff Impact

While you can't control tariff policy, you can control how your business responds. Here are strategies our Denver accounting team recommends:

Supply Chain Diversification

Evaluate domestic suppliers for your highest-cost imported items. While domestic sourcing may be more expensive than pre-tariff import prices, the gap has narrowed significantly. Your bookkeeping data — specifically your vendor cost variance reports — gives you the numbers to make this comparison objectively.

Tariff Engineering

Some products can be classified under different Harmonized Tariff Schedule (HTS) codes that carry lower duty rates. This is legal and common, but requires proper documentation. Work with a customs broker and ensure your bookkeeping reflects the correct HTS classifications.

Foreign Trade Zone Benefits

Colorado has several Foreign Trade Zones (FTZs) where goods can be imported, stored, and re-exported without paying tariffs. If your business model involves any re-export activity, this can be a significant cost saver. Your books need to track FTZ inventory separately from domestic inventory.

Colorado-Specific Considerations

Colorado businesses face unique challenges in the current tariff environment:

• Agriculture: Colorado's $47 billion agriculture industry is heavily impacted by retaliatory tariffs from trading partners, affecting export revenue
• Construction: Lumber, steel, and aluminum tariffs have increased construction costs by an estimated 8-12% in the Denver metro area
• Cannabis: While federally restricted from imports, supply chain components (packaging, equipment) are subject to tariffs
• Technology: Colorado's growing tech sector relies on imported components that now carry the 20% China tariff
• Tourism & Hospitality: Retaliatory actions from trading partners may reduce international tourism to Colorado's ski resorts and national parks

Action Steps for Denver Business Owners

1. Audit your supply chain — Identify every imported product or component and its country of origin
2. Update your chart of accounts — Create tariff-specific sub-accounts under COGS
3. Implement vendor cost tracking — Set up monthly cost variance reports
4. Review your pricing strategy — Use your bookkeeping data to determine if and how much to adjust prices
5. Evaluate inventory valuation methods — Consider whether LIFO might reduce your tax burden in a rising-cost environment
6. Document everything — Maintain customs documentation, HTS codes, and duty receipts for audit protection
7. Schedule a tax planning session — Review your entity structure and deduction strategy in light of increased costs

Why This Matters for Your Bottom Line

The businesses that will thrive in this tariff environment aren't necessarily the ones with the most pricing power — they're the ones with the best information. Clean, detailed bookkeeping gives you the data to make fast, confident decisions about pricing, sourcing, and tax strategy. Without it, you're guessing.

At Centennial Accounting Group, we're helping Denver businesses restructure their bookkeeping systems specifically for the 2026 tariff landscape. Whether you need a chart of accounts overhaul, landed cost implementation, or a comprehensive tax strategy review, our team is ready to help.

Sources

• U.S. Customs and Border Protection — Trade Agreements & Tariff Information
• IRS Publication 334 — Tax Guide for Small Business (COGS Deductions)
• SBA — Managing Small Business Finances
• Colorado Department of Revenue — Business Tax Information