Essential 2026 Tax Updates for Small Business Owners

As a small business owner, staying on top of tax law changes is key to maintaining compliance and optimizing your finances. The 2026 tax year is the first full year under the One Big Beautiful Bill Act (OBBBA), signed July 4, 2025. The changes rewrite much of what small business owners knew going into last filing season. Several provisions that were scheduled to expire are now permanent, a few credits disappeared entirely, and the inflation-adjusted numbers all moved. This guide covers the most pertinent changes, including new tax brackets, deductions, and credit changes, so you head into the next filing season prepared.

Revised Tax Brackets Affecting Small Business Owners

For the 2026 tax year, the IRS has adjusted the income thresholds to account for inflation (Rev. Proc. 2025-32), which could influence your tax liabilities. The seven rates themselves are now permanent under OBBBA, so the scheduled 2026 reversion to pre-2018 rates, including a 39.6% top rate, is off the table.

The federal income tax brackets for 2026 are:

For single filers:

• 10%: Up to $12,400
• 12%: $12,401 to $50,400
• 22%: $50,401 to $105,700
• 24%: $105,701 to $201,775
• 32%: $201,776 to $256,225
• 35%: $256,226 to $640,600
• 37%: $640,601 and above

For married couples filing jointly:

• 10%: Up to $24,800
• 12%: $24,801 to $100,800
• 22%: $100,801 to $211,400
• 24%: $211,401 to $403,550
• 32%: $403,551 to $512,450
• 35%: $512,451 to $768,700
• 37%: $768,701 and above

These adjustments reflect roughly a 2.7% average increase from the previous year, accounting for inflation.

Impact on Pass-Through Entities

For sole proprietorships, partnerships, S corps, and certain LLCs, the owners report business income on their personal tax returns. The revised brackets directly influence the amount of tax owed. Strategic planning, such as income deferral or accelerating expenses, can help manage taxable income within favorable brackets.

Changes to Standard Deductions and Business Expenses

Adjustments to standard deductions and allowable business expenses can impact your taxable income too.

For 2026, the standard deduction amounts are:

• Single Filers: $16,100
• Married Filing Jointly: $32,200

(OBBBA also retroactively raised the 2025 amounts to $15,750 and $31,500, so if a client's 2025 return used the old figures, it's worth a second look.) This increase allows small business owners to reduce their taxable income, potentially lowering tax liabilities. Evaluating whether to take the standard deduction or itemize expenses is still worth doing each year, as itemizing may yield greater tax benefits depending on your specific circumstances. The itemizing math changed too: OBBBA raised the SALT deduction cap from $10,000 to $40,000 for 2025 ($40,400 for 2026), phasing down for taxpayers with modified adjusted gross income above $505,000.

Section 179 Expensing and Bonus Depreciation

The Section 179 deduction allows businesses to deduct the full purchase price of qualifying equipment and software purchased or financed during the tax year. For 2026, the deduction limit is $2.56 million, with a phase-out threshold of $4.09 million. OBBBA roughly doubled these caps, and they now index for inflation each year.

Bonus depreciation is back at 100%, permanently. OBBBA reversed the phase-down that had dropped the rate to 40% and restored full first-year expensing for qualified property acquired and placed in service after January 19, 2025. Unlike Section 179, bonus depreciation has no annual dollar cap and can create a net operating loss, which makes it the stronger option for larger purchases. One trap: property placed in service between January 1 and January 18, 2025, only qualifies for 40%.

Get the Gig Economy Tax Planning Playbook Here

Qualified Business Income (QBI) Deduction Updates

The Qualified Business Income (QBI) deduction, introduced under the Tax Cuts and Jobs Act, allows eligible pass-through entities to deduct up to 20% of their qualified business income. This deduction is subject to various limitations based on income levels and business types.
For 2025, it’s crucial to note that the QBI deduction is set to expire unless extended by new legislation. The expiration of this deduction could result in higher taxable income for many small business owners. Staying informed about legislative developments and consulting with a tax advisor can help in planning for this potential change.

Tax Credits and Incentives

Using available tax credits can offset liabilities and support business growth. This is the area where 2026 brought the most bad news, so check each credit's status before promising a client anything.

Research and Development (R&D) Expensing and the R&D Credit

• The bigger R&D story is deductions, not the credit. OBBBA permanently restored immediate expensing of domestic research costs starting in 2025, ending the Section 174 amortization requirement that forced businesses to spread those costs over five years. Businesses that capitalized domestic R&D costs from 2022 through 2024 can accelerate the remaining unamortized amounts into 2025, or split them across 2025 and 2026. Small businesses with average gross receipts of $31 million or less could instead amend prior returns. Foreign research costs still amortize over 15 years, and any R&D credit claimed reduces the deductible expense, so no double dipping.

Work Opportunity Tax Credit (WOTC)

• The WOTC lapsed for employees who begin work after December 31, 2025, and as of now Congress has not renewed it. The program encouraged hiring individuals from targeted groups who face significant barriers to employment, with credits of up to $2,400 per qualifying hire (more for certain veterans). Credits for employees hired on or before December 31, 2025, can still be claimed once certified. The IRS has discontinued current use of Form 8850. If Congress retroactively extends the credit, the IRS may provide transition relief and new filing instructions.

Employer Retirement Plan Start-Up Credit

Small businesses initiating new retirement plans can benefit from increased start-up credits. For the 2026 tax year:

• Employers with up to 100 Employees: Can claim a credit of 100% of the start-up costs, up to $5,000 per year
  
  
• Employers with 51 to 100 Employees: Eligible for a 50% credit of start-up costs, up to $5,000 per year

This credit is available for the first three years of the plan, incentivizing businesses to support employee retirement savings.

Tax Planning Strategies for Small Business Owners in 2026

With the latest small business tax updates, proactive tax planning is key to minimizing liabilities and maximizing deductions. Here are some strategies to implement in 2026:

1. Maximize Deductions Through Proper Expense Tracking

One of the simplest ways to reduce taxable income is by confirming all business expenses are accounted for. Many small business owners miss out on deductions due to poor record-keeping.

• Use accounting software to track expenses in real-time.
• Deduct eligible business expenses, including office supplies, software subscriptions, and professional services.
• Keep receipts and documentation for all deductible expenses to avoid IRS scrutiny.

2. Optimize Payroll and Employee Benefits

With expanded retirement plan credits and new OBBBA payroll provisions, small business owners can capture tax savings through payroll planning.

• Keep WOTC paperwork alive: screen new hires and file Form 8850 on time even during the lapse, so credits can be claimed if Congress renews the program retroactively.
• Offer retirement benefits: Small businesses implementing a new retirement plan can qualify for up to $5,000 per year in start-up tax credits over three years.
• Reassess salary structures: Business owners structured as S corporations can optimize their compensation by balancing salary and distributions to minimize payroll taxes.
• Note the new deductions for workers: OBBBA created deductions for qualified tips and overtime pay starting in 2025, which changes W-2 reporting and payroll conversations for businesses in tipped industries.

3. Consider Pass-Through Entity Taxation Benefits

For sole proprietors, LLCs, and S corporations, pass-through taxation can provide advantages:

• Qualified Business Income (QBI) Deduction: Pass-through entities are eligible for a 20% deduction on business income**, now permanent under OBBBA**.
• State-Level Pass-Through Entity Taxes (PTETs): Some states offer workarounds for the SALT deduction cap, allowing small businesses to deduct state taxes at the entity level. OBBBA preserved these PTET workarounds, and with the SALT cap raised to $40,400 for 2026 but phasing down above $505,000 of income, the PTET election still matters most for high-income owners.

4. Leverage Depreciation for Immediate Write-Offs

The IRS allows businesses to write off large purchases through depreciation strategies:

• Section 179 Expensing: Deduct the full cost of qualifying equipment and software purchases up to $2.56 million for 2026.
• Bonus Depreciation: Now permanently 100% for qualified property acquired and placed in service after January 19, 2025, with no dollar cap.

For small business owners investing in new equipment, vehicles, or office improvements, these provisions can significantly reduce taxable income.

5. Manage Estimated Taxes to Avoid Penalties

Many small business owners underpay estimated taxes, leading to penalties.

• Quarterly tax payments should be made on time to prevent interest charges.
• Self-employed individuals should review their withholding and estimated tax strategies to avoid underpayment penalties.
• Monitor cash flow to keep funds set aside for tax liabilities.

6. Act Fast on Energy Incentives Before They Disappear

OBBBA terminated most clean-energy incentives, so this category flipped from opportunity to deadline:

• EV Tax Credits: The federal clean vehicle credits ended for vehicles acquired after September 30, 2025. Vehicles purchased on or before that date remain eligible under the old rules.
• Energy-Efficient Buildings: The 179D deduction for energy-efficient commercial buildings ends for property whose construction begins after June 30, 2026. Projects already underway or starting before that date can still qualify, so timing is everything this year.

Accountants should inventory any planned energy projects now and lock in eligibility before the cutoffs.

How TaxPlanIQ Can Help Small Business Owners With 2026 Tax Updates

With all these small business tax filing updates, keeping up with everything can be overwhelming. This is where TaxPlanIQ makes a difference where you can create custom tax plans by generating personalized, professional plans built for individuals or business clients.

TaxPlanIQ simplifies business tax planning, helping accountants increase efficiency, reduce client tax burdens, and add high-value advisory services to their firms.

Want to stay ahead of the latest tax changes? Book a demo of TaxPlanIQ today.