Print a blank Schedule E and keep it next to your expense list. Fifteen named lines, one page. Anything you spent on the rental either lands on one of those lines, gets capitalized and depreciated, or is not deductible at all. Sorting against the actual form finds more money than reading any list of tips, because the form is what the return has to agree with.
The deductions landlords miss are almost never obscure. They are ordinary costs that stayed personal in the records: a drive to the property logged nowhere, a tax prep fee paid from a personal card, a tool bought at a hardware store on a Saturday.
The fifteen lines
Advertising. Listing fees, photography, signs, syndication costs.
Auto and travel. Trips whose primary purpose is collecting rent or managing, conserving, or maintaining the property. Publication 527 is specific that travel to improve the property does not go here; that cost is recovered through depreciation. Mileage needs a contemporaneous log, not a reconstruction.
Cleaning and maintenance. Recurring upkeep. Lawn service, gutter cleaning, the turn clean between tenants, pest control on a schedule.
Commissions. Leasing commissions paid to an agent.
Insurance. The dwelling policy on the rental. Premiums paid in advance for coverage beyond the current year follow their own timing rules, so a three-year prepaid policy is not a single-year deduction.
Legal and other professional fees. Attorney time on a lease or an eviction, accountant time on the rental portion of your return, a consultant on a compliance question.
Management fees. What a property manager charges. If you self-manage, this line is empty and the work moved to your own hours instead.
Mortgage interest paid to banks. Interest, not principal. The 1098 from your servicer has the number.
Other interest. Interest on anything else borrowed for the rental, including a card used only for the property.
Repairs. Fixing what broke. Distinct from an improvement, which gets capitalized. The repair-or-improvement test is worth reading before a large invoice.
Supplies. Filters, light bulbs, cleaning products, the small consumables.
Taxes. Property tax on the rental. Not your income tax.
Utilities. Whatever you pay rather than the tenant, plus any owner-paid trash, water, or common-area power.
Depreciation expense or depletion. The building, and separately the 5-year property inside it. How depreciation works covers the mechanics.
Other. A write-in line. HOA dues, bank fees on the rental account, software, licensing or registration fees your city charges landlords.
Four that get left off most often
Software and subscriptions. The tools you run the rental on are ordinary business costs. LeaseRooster is free at the first tier, and priced per unit above it; whatever you use, it belongs on the return. So do the bank fees on the account the rent lands in.
The home office. If you have a space used regularly and exclusively for managing the rental, there is a deduction there. The rules are strict about “exclusively,” which is why most landlords skip it, and why the ones who qualify should document the space rather than guess at square footage later.
Local registration and licensing. A rental registration fee, a business license, a lead paint certification, an inspection fee. These are small individually and they add up across a year, and they almost never make it into a spreadsheet because they get paid once and forgotten.
Vendor payments you made in cash. Deductible if you can substantiate them, invisible if you cannot. This is the single largest source of lost deductions for small landlords, and the fix is not a tax fix. It is paying vendors through the account the rental uses, so the record exists without anyone creating it. Tracking vendor invoices covers the capture habit.
Three that feel deductible and are not
Unpaid rent. If you are a cash basis taxpayer, and nearly every small landlord is, you never reported the rent as income, so there is nothing to deduct when it does not arrive. Publication 527 says this directly. The loss is real; the deduction is not.
Your own labor. A weekend spent painting is not an expense. Materials are. Hours are not, because you never paid yourself in a way the return recognizes.
Improvements, this year. A new roof, a kitchen remodel, an addition. Real money, real deduction, wrong year. It gets capitalized and recovered over time.
What “ordinary and necessary” actually asks
The standard is whether the cost is common and accepted in the business of renting property, and helpful and appropriate for it. That is a wider net than most landlords use on themselves. A smoke detector is obviously in. So is the mileage to install it, the receipt app you file it in, and the accountant who sorts it.
The narrowing question is not “was this a real cost” but “can I show it was for the rental.” That is a records question, which is why the deductions checklist and the receipts checklist are really the same document read from two ends.
Where to sort, and when
Sort on the day the money moves. Not in January. A payment categorized at approval carries its invoice, its unit, and its reason; the same payment categorized eleven months later carries a vendor name and an amount, and you will guess at the rest.
Accounting in LeaseRooster puts the category on the expense and the expense on the unit, so the Schedule E sort is already done when the tax season checklist comes around.
This is general information, not legal or tax advice. Rules change and local ordinances vary. Confirm current requirements with your city, county, or an attorney before you act, and talk to a CPA about your own return.