2026 Tax Law Changes: Your Early Warning System
Stay ahead of the curve. Here’s what small business owners need to know to keep things legal in 2026. No stress, just clarity.
In this guide:
The Sunset Provision: Understanding the 2026 Change
In 2017, Congress passed the Tax Cuts and Jobs Act (TCJA) with a built-in expiration date: December 31, 2025. This “sunset provision” means many favorable tax rules will automatically revert to their pre-2017 levels unless new legislation extends them. For small business owners, this isn’t just technical jargon — it directly impacts your tax liability, cash flow, and long-term planning.
Here’s what’s scheduled to change:
Key Dates to Mark on Your Calendar
The most critical deadline is January 1, 2026, when provisions from the Tax Cuts and Jobs Act (TCJA) expire. This affects pass-through deductions, individual tax brackets, and estate tax exemptions. For businesses relying on the Section 199A deduction (up to 20% of qualified business income), this represents a significant shift in tax liability planning. Your estimated tax payments for Q1 2026 (due April 15, 2026) should reflect these new realities, so adjustments must begin in Q4 2025.
Mark September 30, 2025 as your strategic planning checkpoint. This gives you a full quarter to model scenarios, adjust working capital reserves, and consult with your tax advisor before year-end. Consider running parallel projections: one under current rules and one under 2026 provisions to understand your true exposure.
Required Actions: What You Need to Do Now
Start by conducting a tax liability projection for 2026 using your current income levels. Compare your effective tax rate under existing law versus the anticipated changes, particularly if you benefit from expiring provisions like the Section 199A deduction or enhanced bonus depreciation. This baseline assessment reveals your true exposure and helps prioritize action items before year-end 2025.
Next, schedule a strategic review with your tax professional before Q3 2025. Discuss whether accelerating income into 2025, deferring major equipment purchases, or restructuring compensation makes sense for your situation. Small adjustments to estimated tax payments now can prevent underpayment penalties later. Document your current working capital position — understanding your cash flow capacity determines which tax strategies you can actually execute.
Finally, review your business entity structure. The 2026 tax law changes may shift the advantages between S-corps, LLCs, and C-corps depending on your revenue level and growth trajectory.
How These Changes Affect Your Business
The 2026 tax law changes will reshape your tax liability differently depending on your business structure. S-Corps and pass-through entities face the most significant impact as the Section 199A qualified business income deduction expires, potentially increasing your effective tax rate by up to 20%. Sole proprietors will need to recalculate their quarterly estimated payments immediately, as the standard deduction reverts to pre-2017 levels. Meanwhile, C-Corps may see advantages if individual rates rise while corporate rates remain stable at 21%.
Watch these critical areas closely:
Frequently Asked Questions
Will these tax changes definitely happen?
While no one has a crystal ball, the current law requires these changes unless Congress acts. Preparation is key, regardless of the future political climate.
When should I start planning for 2026?
The sooner, the better! Contact us for a consultation to review your current strategy and identify potential adjustments.
Where can I find more information?
Stay tuned to Apex Accounting’s blog for ongoing updates. We’re here to simplify the complex!