2026 Year-End Tax Planning Checklist: 10 Moves Small Business Owners Should Make Before December 31
Cut your 2026 tax bill before December 31. A year-end tax planning checklist for small business owners from Enrolled Agents in Palm Harbor, FL.
9/17/20265 min read
Most business owners think about taxes in March or April. By then, most of the chances to save money are already gone. Nearly every strategy that lowers your 2026 tax bill has to happen before December 31, 2026.
The One Big Beautiful Bill Act (OBBBA) changed a lot of the rules. Several deductions became permanent and some limits went up. That makes this year's planning more valuable than usual.
Below is a practical year-end tax planning checklist for small business owners, freelancers, and self-employed professionals, whether you're in Palm Harbor, Clearwater, or anywhere else in the U.S.
1. Get Your Books Up to Date Now, Not in February
You can't plan with numbers you don't have. Before you make any year-end decision, your bookkeeping should be current through at least September or October. That means:
All bank and credit card accounts reconciled
Income and expenses categorized correctly
A realistic projection of your net profit for the full year
With a clear profit estimate, you can decide how much to spend, defer, or invest before the year closes. If your books are behind, catching up is the first and most important step.
2. Use Section 179 and 100% Bonus Depreciation on Equipment
If your business needs new equipment, vehicles, computers, or furniture, buying before year-end can create a large deduction.
For 2026:
The Section 179 deduction limit is $2,560,000, and the phase-out begins once qualifying purchases exceed $4,090,000.
100% bonus depreciation is now permanent for qualifying property acquired after January 19, 2025.
Heavy SUVs (6,001–14,000 lbs GVWR) have a $32,000 Section 179 cap, but the rest of the cost can usually be recovered through bonus depreciation.
Important: the asset must be placed in service, meaning in use in your business, by December 31. Ordering it isn't enough. Also, don't buy equipment you don't need just to get a deduction. A deduction saves only a portion of what you spend.
3. Time Your Income and Expenses
Most small businesses use the cash method of accounting, which gives you some control over timing.
Deferring income: you can send December invoices in early January so the income falls into 2027. This works if you expect to be in the same or a lower tax bracket next year.
Accelerating expenses: you can prepay certain deductible expenses in December, such as supplies, software subscriptions, or professional fees, to lower 2026 profit.
If you expect a much bigger income year in 2026 than in 2027, or the other way around, timing decisions can shift thousands of dollars in tax.
4. Maximize Retirement Contributions
Retirement plans are one of the most effective ways for business owners to lower taxable income while building savings.
Solo 401(k): good for self-employed owners with no employees. You contribute both as the "employee" and as the "employer." Open it before year-end for the most flexibility.
SEP-IRA: easy to set up. It can be opened and funded up to your tax filing deadline, including extensions.
Traditional 401(k) for businesses with staff: a plan can also help you attract and keep good employees.
Contribution limits went up again for 2026. We can calculate your maximum allowed contribution based on your business structure and net profit.
5. Review Your Business Structure for 2027
If your LLC earned solid profits this year, you may be paying more self-employment tax than you need to. An S-Corporation election can reduce that burden once profits reach a certain level, provided you pay yourself a reasonable salary.
The fourth quarter is the right time to review this. For a calendar-year business, the S-Corp election for 2027 generally must be filed by March 15, 2027. For a detailed comparison, read our guide: LLC vs. S-Corp: Which Is Better for Small Business Tax Savings?
6. Protect Your Qualified Business Income (QBI) Deduction
The 20% Qualified Business Income deduction for sole proprietors, partnerships, LLCs, and S-Corps is now permanent under the OBBBA. This one deduction can be worth a lot, but it depends on your taxable income, the type of business you run, and the wages you pay.
Higher-income owners of service businesses, such as consultants, medical practices, and financial professionals, may see this deduction reduced or eliminated. Year-end planning, like retirement contributions or timing income, can sometimes keep you under the thresholds.
7. Get Ready for the New 1099 Rules
Starting with payments made in 2026, the reporting threshold for Forms 1099-NEC and 1099-MISC rose from $600 to $2,000. Fewer contractors will need a 1099, but you still have to track who you paid and how much.
Take these steps now:
Collect a Form W-9 from every contractor you've paid this year
Confirm names, addresses, and taxpayer ID numbers
Flag which contractors are over the new threshold
This saves you a scramble in January, when 1099s are due to recipients and the IRS.
8. Plan Your Charitable Giving Under the New Rules
The OBBBA changed charitable deductions starting in 2026:
Taxpayers who don't itemize can deduct cash donations up to $1,000 (single) or $2,000 (married filing jointly).
Taxpayers who do itemize can only deduct donations above 0.5% of their adjusted gross income.
If you give regularly and itemize, grouping two years of donations into one year, or using a donor-advised fund, may give you a better result. Business owners should also know that C-Corporations follow separate charitable rules.
9. Check Your Estimated Tax Payments
The third-quarter estimated payment was due September 15, 2026. The final 2026 payment is due January 15, 2027.
If your income rose this year, you may be underpaid and at risk of penalties. A year-end review lets you adjust your Q4 payment, or your W-2 withholding if you have one, before penalties grow. For every key date, see When Are Taxes Due in 2026? Key IRS Deadlines.
Filed an extension? Individual returns on extension are due October 15, 2026. Don't let that deadline slip by while you plan for year-end.
10. Don't Forget Florida-Specific Items
Florida has no state personal income tax, which is great news for sole proprietors, LLC members, and S-Corp shareholders. Some Florida obligations still apply:
C-Corporations may owe Florida corporate income tax.
Businesses selling taxable goods or services must stay current on Florida sales and use tax filings.
Businesses with employees must keep up with Florida reemployment tax (state unemployment).
If you sell to customers in other states, you may also have multi-state sales tax obligations that are easy to miss.
Quick Year-End Tax Planning Checklist
☐ Bookkeeping reconciled and profit projected
☐ Equipment purchases placed in service by Dec 31
☐ Income and expense timing reviewed
☐ Retirement plan opened and contributions planned
☐ S-Corp election reviewed for 2027
☐ QBI deduction eligibility checked
☐ W-9s collected for all contractors
☐ Charitable giving strategy set
☐ Q4 estimated payment calculated
☐ Florida sales tax and payroll filings current
Why Work With an Enrolled Agent for Year-End Planning?
Tax software can file a return, but it can't plan ahead for you. Real savings come from reviewing your numbers before the year ends and making decisions that fit your specific situation.
At Accounting & Tax Services Pros LLC, our founder Anisa Braka is admitted to practice before IRS, with over 15 years of accounting experience. We help individuals and small businesses with:
Proactive tax planning and deduction strategy
Bookkeeping and financial reporting
Business and personal tax preparation
Payroll and 1099 compliance
IRS representation and audit support
Explore our accounting and tax services
Schedule Your Year-End Tax Planning Consultation
The earlier you start, the more options you have. Don't wait until December, when calendars fill up and time runs out.
📞 Call us: +1 (727) 476-6313
📧 Email: Info@accountingprostaxservices.com
📍 819 County Road-1, Palm Harbor, FL 34683
🌐 www.accountingprostaxservices.com
📍 Serving clients locally and remotely across the U.S.
Disclaimer: This content is for educational and informational purposes only and is not intended as tax, legal, or financial advice. Tax laws change frequently and individual situations vary. Consult a qualified tax professional before making decisions.
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