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The 2026 tax season is one of the most critical filing periods small business owners have faced in years. If you’re preparing to file a return for the 2025 tax year, this is not a year to assume “everything is the same.”
Between inflation-driven changes, tighter IRS enforcement, evolving reporting rules, and the looming expiration of key tax provisions, many business owners are discovering that old strategies no longer deliver the same results.
Here’s what changed for 2025 taxes filed in 2026 and what small business owners should do now.
The 2025 tax year represents the final year under many current tax rules before major provisions are scheduled to expire or change. While future legislation remains uncertain, your 2025 return sets the foundation for:
For small business owners, this makes the 2026 tax season a planning moment—not just a compliance task.
For 2025:
This resulted in unexpected tax bills, especially for pass-through businesses where profits flow directly to the owner’s personal return.
Key takeaway: Growth without planning can mean higher taxes—even when cash flow hasn’t improved.
The 20% Qualified Business Income (QBI) deduction under Section 199A is still available for the 2025 tax year, but many small business owners are losing part—or all—of it without realizing why.
Common issues in the 2026 filing season include:
With the QBI deduction currently scheduled to expire after 2025, this may be the last year to claim it.
S corporations, LLCs, and sole proprietorships are being reviewed more closely by the IRS, particularly around:
At the same time, some smaller businesses are realizing they are overpaying in compliance costs for structures that no longer fit their income level.
2026 insight: Your entity structure should evolve as your business evolves.
By the time you file your 2025 return:
Even when reporting thresholds fluctuate, the IRS already has the data.
If income was paid to your business, assume it needs to be reported.
While audit rates remain modest overall, small businesses remain a key focus because mistakes are common and often unintentional.
In the 2026 tax season, the IRS is paying closer attention to:
Many audits stem from poor documentation, not intentional wrongdoing.
So far, the most frequent issues on 2025 returns include:
These mistakes often result in overpaying taxes, not just penalties.
Even after December 31, 2025, small business owners may still be able to:
Filing early isn’t always filing smart.
For small business owners, the 2026 tax season is a turning point. How you file your 2025 return can affect your taxes, compliance risk, and planning opportunities for years to come.
If your income changed, your business grew, or your tax strategy hasn’t been reviewed recently, this is the year to take a closer look.
We help small business owners:
To learn more about how you can reduce your taxes and save money, check out the helpful resources on our blog or contact us today to schedule a consultation.