Year-End STR Tax Checklist for 2026: What to Do Before December 31

Most short-term rental tax savings are won or lost in the last 10 weeks of the year. Some deadlines only exist on December 31. Others, like your hours log, can't be rebuilt in January without hurting your credibility in an audit.

Use this checklist to see where you stand. It covers three areas: placing property in service, proving participation, and cleaning up your records. Check off what applies to you, and take the rest to your CPA this month, while there's still time to act.

This is general education, not tax advice. Rules depend on your facts, so confirm your plan with a CPA who has defended STR positions.

0 of 35 items checked

1. Confirm Your Property Is "Placed in Service" This Year

Depreciation starts when a property is ready and available to rent, not when you close. Closing in December doesn't help if guests can't book until January.

Listing is live and bookable on or before December 31Keep proof of the date: first live listing, first booking or calendar availability, utility start dates, and the date furnishing was finishedDocument any property that closed this year but isn't ready yet, and know which tax year it will fall into

2. Review Depreciation and Bonus Depreciation

Congress permanently restored 100% bonus depreciation for qualifying property acquired and placed in service after January 19, 2025. Property acquired on or before that date and placed in service later is still on the old phase-down schedule (20% for 2026). The building itself (27.5 years) doesn't qualify, but shorter-lived components can.

Ask your CPA whether a cost segregation study fits your property and incomeConfirm the acquisition date of each property, since it affects the bonus percentageBuy and place furniture, appliances, and equipment in service before December 31 if they qualifyNote that a study can often be completed after year-end, but the property must be placed in service by December 31

Want the bigger picture? Read our STR Tax Loophole Guide.

3. Verify the 7-Day Average Stay

The STR strategy depends on your rental averaging seven days or less per guest stay. Don't assume you meet it.

Calculate your average stay for each property (total rented nights divided by the number of stays)Watch for long stays or monthly rentals that pull the average upSave the booking report you used for the calculation

4. Check Your Material Participation Hours

Meeting the average-stay rule isn't enough. You also have to materially participate. Most STR investors rely on one of two tests: 500+ hours, or 100+ hours and no one else (including cleaners and property managers) spending more time than you.

Total your hours year-to-date for you and, where relevant, your spouseTotal hours worked by cleaners, handymen, property managers, and other third partiesCompare your hours to theirs, since this is where the 100-hour test fails most oftenIf you're short, ask your CPA what is realistic in the time left, and don't pad hours

Each hour needs a date, a task, and a time. Logs that read like "10 hours, general management" or that show suspiciously round numbers invite questions. For more detail, read our guides on contemporaneous logging and the 100-hour rule and common material participation log mistakes, and see how to track spouse and third-party hours.

5. Reconcile Personal Use Days

Staying at your own rental can change how it's taxed.

Count personal use days, including family and friends staying free or at a discountSeparate personal days, business days, and fair market value daysCheck whether you're near the 14-day or 10%-of-rental-days thresholds, and ask your CPA how they apply to you

Not sure how to categorize a stay? See our guide to personal, business, and fair market value days.

6. Finish Your Mileage and Vehicle Records

Log every business trip: date, destination, purpose, and miles (property visits, supply runs, contractor meetings)Record your year-end odometer readingReconstructing mileage in March from your memory is weak evidence, so finish it now

Need a system? See our guide to tracking STR mileage.

7. Time Your Year-End Expenses

Pay outstanding repairs, supplies, and services before December 31 if you use cash-basis accounting and want the deduction this yearAsk your CPA whether to elect the de minimis safe harbor for smaller purchasesSeparate repairs from improvements, because they are treated differentlyCollect receipts and invoices for every deduction

8. Reconcile Income and Payments

Match your platform payout reports and bank deposits to your income recordsList contractors you paid and gather their W-9s, because you may need to file 1099s in January, and filing thresholds changed for 2026Gather lodging tax filings, permits, and license renewals, and renew any that expire soon

9. Plan Your Estimated Taxes

Ask your CPA for a projection of your 2026 tax before the year endsDecide whether you need a Q4 estimated payment, due in mid-JanuaryAsk whether any loss limits (such as basis, at-risk, or excess business loss rules) apply to your return

Need a CPA who understands STR tax strategy? Browse our recommended STR tax CPAs.

10. Lock Down Your Records

Finalize and review your hours log, and fix gaps while you still remember the detailsExport your hours, third-party hours, and mileage as PDF or CSVBack up your records in at least two placesSend your CPA a complete package early, not during tax seasonSet up your log for January 1 so you start next year from day one

Make Year-End Easier Next Time

If this checklist showed gaps in your hours or mileage, you're not alone. Most owners start tracking late or keep records scattered across spreadsheets and calendars. STR Audit Shield Pro gives you one place to log owner, spouse, and third-party hours, track mileage and personal-use days, and export audit-ready reports. Plans start at $6/month for the solo plan with a 14-day free trial.

Start your free trial

Ready to Protect Your Retirement?

Fund college through smart financial positioning and leveraging short-term rental real estate investing.

Step 1:Visit STR Audit Shield Pro at strauditshield.com to keep your STR tax strategy audit-ready.
Step 2:If you'd like to learn more about using tax and real estate strategies to keep more of what you earn, increase financial aid eligibility, and build a smarter plan for college and retirement, check out College Funding Secrets to learn more.

Start 14-Day Free Trial of STR Audit Shield Pro

Book a call with the team at College Funding Secrets

I am an independent affiliate for this program with College Funding Secrets. I personally recommend their educational programs and strategy because I believe in their value. If you enroll after booking, I may earn a referral fee at no additional cost to you. My direct link will also earn you a discount.

The information provided in this guide is for general informational purposes only and does not constitute tax, legal, or financial advice. Always consult a qualified CPA, tax attorney, or financial advisor before making any tax, investment, or real estate decisions.