The 2026 Tax Changes Business Owners Should Review Before Year End

September is a useful point in the year for business owners to start looking beyond current revenue and expenses and think about what their 2026 financial results could mean at tax time. Waiting until December can leave very little room to adjust major purchases, organize records, or discuss tax planning opportunities with an accountant.

That conversation is particularly important this year because several federal tax provisions affecting small businesses have changed. Some of the changes simplify reporting requirements, while others affect deductions, equipment purchases, and how business losses are treated. The IRS has already issued guidance covering many of these provisions, giving owners enough information to begin year end tax planning before the final months of 2026.

One of the more noticeable administrative changes involves information reporting for independent contractors and certain other business payments. For payments made before 2026, the general reporting threshold for certain Form 1099-NEC payments was $600. For payments made during 2026, that threshold increased to $2,000. The IRS says the new amount applies to certain payments made in the course of a trade or business and will be adjusted for inflation beginning after 2026.

For businesses that work with multiple contractors, this could reduce the number of information returns required at year end. It does not mean businesses should stop tracking payments below $2,000. Accurate contractor records remain important for bookkeeping and expense documentation, and backup withholding rules can still create reporting requirements regardless of the payment amount in certain situations.

That makes September a good time to review contractor activity rather than waiting until January. Businesses should know how much has been paid to each vendor or contractor and whether the necessary tax documentation is already on file. The higher threshold may reduce some reporting obligations, but clean vendor records remain part of good year end bookkeeping.

Depreciation is another area that changed substantially. Federal law permanently restored 100 percent additional first year depreciation for qualifying property acquired after January 19, 2025. Under current IRS guidance, most qualifying business property acquired and placed in service after that date can generally qualify for a 100 percent first year deduction instead of having the deduction spread across several years.

For businesses considering equipment or technology investments before the end of 2026, that creates an important tax planning conversation. Machinery and other qualifying business property may be eligible, although the specific rules depend on the asset and how it is used.

The availability of a larger deduction should not become the reason to make an unnecessary purchase. Spending $50,000 solely to generate a deduction still requires the business to spend $50,000. Capital expenditure planning should begin with whether the asset improves productivity, replaces something necessary, or produces an acceptable return on investment. The tax treatment can then become part of deciding when and how to make the purchase.

Cash flow deserves consideration as well. A business may qualify for accelerated depreciation while still deciding that preserving liquidity is more important than making the purchase this year. Year end tax planning works better when tax strategy, cash flow forecasting, and capital allocation are evaluated together.

Business owners with significant losses also need to understand changes to the excess business loss rules. The limitation on excess business losses for noncorporate taxpayers was previously scheduled to expire. Federal legislation enacted in 2025 made the limitation permanent, and the threshold continues to be indexed for inflation for tax years beginning after 2025.

This provision can become particularly relevant for owners of pass-through businesses who expect large business losses to offset other income. A business reporting a substantial tax loss should not automatically assume the entire amount can be used against income from other sources during the same year. The calculation can become complicated, which makes early discussions with a tax professional important when unusually large losses are developing.

The qualified business income deduction also received a major long-term change. The 20 percent QBI deduction for qualifying trades and businesses was made permanent, and the IRS notes that income thresholds affecting limitations on the deduction have also increased.

For many owners of sole proprietorships, partnerships, S corporations, and other qualifying pass-through businesses, QBI remains an important part of small business tax planning. Eligibility and the final deduction can depend on taxable income and the type of business, among other factors. Owners approaching relevant income limitations should therefore review projected 2026 results with their tax professional rather than assuming last year's deduction will automatically carry forward unchanged.

Self-employed owners also have a higher Social Security wage base to consider. For 2026, the maximum amount of net self-employment earnings subject to the Social Security portion of self-employment tax increased to $184,500. That change can affect projected tax obligations for higher earning self-employed individuals and should be reflected in year end cash planning.

Business vehicle expenses changed as well. The IRS standard mileage rate for business use increased to 72.5 cents per mile for 2026. Businesses and self-employed owners using the standard mileage method should make sure mileage records are current before year end rather than attempting to reconstruct an entire year's business travel later. These individual changes point toward a larger issue: tax planning works much better when bookkeeping is current.

An owner cannot make a reliable year end tax projection if several months of expenses remain uncategorized or major accounts have not been reconciled. The same problem occurs when fixed assets have not been recorded properly or contractor payments are incomplete. By September, businesses should have enough year-to-date financial information to begin estimating where revenue, profitability, and taxable income could finish the year.

A current Profit and Loss Statement provides the starting point. Comparing year-to-date revenue and expenses with the same period last year can reveal whether taxable income may be significantly different. If profitability has increased, estimated tax obligations may need another look. If the business purchased major assets during the year, those transactions should also be identified so their potential depreciation treatment can be evaluated.

The Balance Sheet deserves attention during this process too. Loans and fixed assets can affect tax planning differently from normal operating expenses. Owner distributions may reduce available cash without reducing taxable business income. That distinction can create an unpleasant surprise when owners assume money leaving the bank automatically lowers their tax liability.

Estimated taxes are another reason to begin reviewing the numbers before the final quarter. Businesses and owners who make estimated payments need projections based on current financial performance rather than assumptions created at the beginning of the year. A company that has substantially exceeded its original profit forecast may need to reserve more cash for taxes during Q4.

Year end tax strategy should therefore be connected with cash flow management. If updated financial reporting indicates a larger potential tax obligation, owners have time to begin building the necessary cash reserve. That is much easier than discovering the same obligation shortly before a payment deadline.

Businesses should also be cautious about allowing tax strategy to distort otherwise sensible financial decisions. Accelerating an expense may provide a deduction, but that does not automatically make the expense worthwhile. Buying equipment can produce favorable depreciation treatment, but the investment should still make operational and financial sense.

The strongest tax planning decisions usually support the business on both sides. An investment may improve productivity while receiving favorable tax treatment. A retirement contribution may support the owner's long-term financial goals while affecting current taxes. The tax benefit becomes part of the decision rather than the entire reason for it.

That distinction matters heading into the final months of 2026 because several of this year's changes create legitimate planning opportunities. Permanent 100 percent bonus depreciation can affect capital expenditure decisions, while the permanent QBI deduction provides greater long-term certainty for qualifying business owners. The new $2,000 information-reporting threshold changes some year end contractor reporting, while permanent excess business loss limitations can affect owners experiencing significant losses.

None of these provisions should be applied without considering the circumstances of the individual business. Entity structure, taxable income, previous elections, asset type, and other factors can change the result. Business owners should use current bookkeeping to identify the issues worth discussing and then work with their CPA or tax professional before making tax-sensitive decisions.

September provides enough time to do that without turning year end tax planning into an emergency. Clean up outstanding bookkeeping and review year-to-date profitability. Identify major equipment purchases and look at contractor payments. From there, updated forecasts can help estimate how the final quarter could affect taxable income and available cash.

The 2026 small business tax changes create opportunities in some areas and new considerations in others. Understanding them before December gives business owners more control over their decisions and more time to prepare financially. The objective should not be finding every possible deduction. It should be entering year end with accurate financial information, a realistic tax projection, and a strategy that supports both the tax return and the financial health of the business.