The fourth quarter moves fast. Between tenant renewals, maintenance requests, and end-of-year finances, it's easy to let tax preparation slide until January — and by then, you've already left money on the table.
This checklist is built specifically for OKC rental property owners. Whether you manage one property or eleven, the same categories apply. Work through these now, before December 31, and you'll head into tax season with everything organized and every deduction accounted for.
1. Confirm All Rental Income Is Documented
This is the one the IRS audits first. Every dollar collected — rent payments, late fees, pet fees, lease break fees — is gross income and needs to be reported. Pull your records from Buildium or whatever platform you use and reconcile against your bank deposits.
☐ Reconcile total rent collected against bank deposits for each property
☐ Document all late fees, pet fees, and ancillary income
☐ Confirm any security deposits held are NOT counted as income until applied
☐ Account for Airbnb or short-term rental income separately (different tax treatment may apply)
2. Gather and Categorize All Expenses
Every legitimate expense reduces your taxable income. Most landlords miss deductions because they don't keep receipts organized through the year. Pull everything together now.
☐ Mortgage interest (from your lender's year-end statement)
☐ Property taxes paid in 2026
☐ Insurance premiums — landlord policy, umbrella, flood
☐ Repairs and maintenance (receipts for every job)
☐ Property management fees paid to Tru Diligence or any other PM
☐ Advertising and marketing costs (listings, signage, photography)
☐ Legal and professional fees (attorney, CPA, eviction costs)
☐ Utilities paid by landlord on any property
☐ HOA dues (if applicable)
3. Separate Repairs from Capital Improvements
This distinction matters and it trips up a lot of landlords. A repair is deducted fully in the current year. A capital improvement is depreciated over time. Your CPA needs to know which is which.
Repairs (deduct in full this year):
☐ Fixing a leaky faucet or broken window
☐ Patching drywall
☐ Repainting a room
Capital improvements (depreciated over multiple years):
☐ New roof or HVAC system
☐ Remodeled kitchen or bathroom
☐ Added square footage or structural change
4. Review Your Depreciation Schedule
Depreciation is one of the most powerful tax advantages available to rental property owners — and it's completely legal. Residential rental properties depreciate over 27.5 years on a straight-line schedule. If your CPA isn't running a current depreciation schedule for every property you own, you are overpaying on taxes.
☐ Confirm you have an active depreciation schedule for each property
☐ Add any capital improvements from 2026 to the schedule
☐ Ask your CPA if a cost segregation study makes sense for your portfolio size
☐ If you sold a property in 2026, confirm depreciation recapture is being calculated
5. Track Your Mileage and Travel
Every trip to a property for inspection, repair coordination, or tenant meetings is potentially deductible. The IRS standard mileage rate for 2026 applies to any vehicle used in the ordinary course of managing your rentals.
☐ Pull all mileage logs for property-related driving
☐ Document each trip with date, property, and purpose
☐ Include any out-of-town travel for property acquisition or management purposes
6. Evaluate Your Pass-Through Deduction (Section 199A)
If your rental activity qualifies as a business under IRS guidelines, you may be eligible for the 20% qualified business income deduction under Section 199A. This is one the most significant deductions available to active landlords and property managers.
☐ Confirm with your CPA whether your rental portfolio qualifies as a trade or business
☐ Review hours spent managing the portfolio in 2026
☐ Document any safe harbor elections your CPA has filed on your behalf
7. Review Estimated Tax Payments
If you are self-employed or your rental income creates a significant tax liability, you are expected to make quarterly estimated tax payments. Missing Q4 (due January 15, 2027) results in underpayment penalties.
☐ Confirm Q1, Q2, and Q3 estimated payments were made and match your records
☐ Estimate your Q4 payment based on 2026 net income to date
☐ Q4 estimated payment due: January 15, 2027
8. Get Ahead of 1099 Requirements
If you paid any contractor, vendor, or service provider $600 or more in 2026, you are required to issue a 1099-NEC by January 31, 2027. This includes your handymen, cleaners, landscapers, and any other unincorporated service providers.
☐ Pull a list of all vendors paid $600 or more in 2026
☐ Collect W-9 forms from each contractor who hasn't submitted one
☐ Prepare 1099-NEC filings or hand off to your CPA before the January 31 deadline
The Bottom Line
Tax preparation is not a January problem. The landlords who come out ahead are the ones who treat it as a year-round discipline and finish the final checklist before the calendar flips.
If you are an OKC rental property owner looking for a property management team that keeps your operations organized and your records clean, reach out to Tru Diligence. We manage properties the way you would — if you had the time.
Tru Diligence Property Management | OKC, Oklahoma | trudiligencepm.com
Published: November 10, 2026 | Week 46/2026