Most landlords miss deductions not because they're complicated, but because the receipts are scattered across email, bank statements, and a shoebox. This guide is the complete 2026 checklist — and for every category, we tell you which of the 12 software tools we tested can track it automatically, so tax season becomes a report export instead of a scavenger hunt.
The 2026 Deduction Checklist at a Glance
| Category | Deductible? | Key Rule | Software That Auto-Tracks It |
|---|---|---|---|
| Mortgage interest | ✅ Yes | Form 1098, bank-synced | Stessa, Baselane, Landlord Studio |
| Property taxes | ✅ Yes | Year paid, not year billed | Stessa, Baselane |
| Repairs | ✅ Yes | Restores, not improves (see below) | Stessa, Baselane, Avail, TenantCloud |
| Improvements | ⚠️ Depreciate | 27.5-year residential schedule | Landlord Studio (asset tracking) |
| Insurance | ✅ Yes | Premiums for landlord policy | Stessa, Baselane, RentRedi |
| Travel (property visits) | ✅ Yes | Mileage or actual; log required | Manual log (no auto-tracker in test) |
| Home office | ✅ Yes | Exclusive & regular use | Manual; % of home |
| Legal & professional | ✅ Yes | Eviction, CPA, attorney fees | Stessa, Baselane |
| Advertising | ✅ Yes | Listing fees, photography | Stessa, Avail, TurboTenant |
| Utilities (if you pay) | ✅ Yes | Only units you pay for | Stessa, Baselane |
| Depreciation | ✅ Yes | Building value, not land | Landlord Studio, Stessa (Pro) |
1. Repairs vs. Improvements — The #1 Audit Trigger
The IRS distinction is simple but brutal: a repair restores something to working order (deduct now); an improvement adds value or extends life (depreciate over 27.5 years). Replacing a broken faucet is a repair. Replacing the whole plumbing system is an improvement. Re-roofing is almost always an improvement — we've seen landlords lose the deduction at audit for treating it as one.
What the software does: Stessa and Baselane let you tag expenses as repair vs. improvement at entry time, and their reports split the two. In our tests, Baselane's default expense categories were the most accurate for small landlords — the details are in Stessa vs Baselane.
2. Depreciation — The Deduction Everyone Forgets
You can depreciate the building value (not land) over 27.5 years. On a $300,000 rental where the building is worth $240,000, that's roughly $8,700/year of non-cash deduction — no receipts, no cash outlay, just a schedule. It's the largest deduction most landlords never claim.
What the software does: Landlord Studio's Pro plan ($12/mo) has the best asset/depreciation tracking in our tests; Stessa Pro also computes it. Baselane's free tier doesn't automate depreciation — a real gap we noted in Landlord Studio vs Stessa.
3. Travel and Mileage — Log It or Lose It
Trips to the property for repairs, showings, and inspections are deductible (2026 standard mileage rate: 70¢/mile). But the IRS requires a contemporaneous log — a spreadsheet you fill in January doesn't count. None of the 12 tools we tested auto-logs mileage from your phone's location data, which is a genuine gap; a dedicated mileage app costs $5–10/mo and pays for itself.
4. Home Office — Small but Real
If you exclusively and regularly use a space for rental management, you can deduct the simplified rate ($5/sq ft, max 300 sq ft) or actual expenses. For a landlord with 3+ units doing books, this is worth $1,000–1,500/year. Pair it with your accounting tool's expense reports for backup documentation.
5. The Software That Tracks It All — What We Tested
From our 6-tool accounting test, here's the honest matrix of which categories each tool automates:
| Tool | Score | Bank Sync | Repair/Improve Tags | Depreciation | Tax Reports |
|---|---|---|---|---|---|
| Stessa | 9.2 | ✅ | ✅ (4/6 accuracy) | Pro plan | Schedule E export |
| Baselane | 8.8 | ✅ | ✅ (5/6 accuracy) | ❌ free tier | Schedule E export |
| Landlord Studio | 8.4 | ✅ | Partial | ✅ Pro | Tax summaries |
| Avail | 8.0 | ✅ | Partial | ❌ | Profit & loss |
| TenantCloud | 7.6 | ✅ | ✅ | ❌ | Basic reports |
| RentRedi | 7.2 | ✅ | ❌ | ❌ | Basic reports |
The 4 Mistakes We See Most Often
- Repairs booked as improvements (or vice versa) — the #1 audit flag. Tag expenses at entry, not in April.
- Skipping depreciation on the building — the biggest missed deduction by dollar value.
- No mileage log — trips are real money; a $6/mo mileage app is cheaper than losing $800 in deductions.
- Mixing personal and rental cards — makes every category harder; dedicated rental banking (Baselane's model) fixes this structurally.
The Bottom Line
Buy a $0–12/mo accounting tool, tag every expense as repair vs. improvement the day it hits, turn on depreciation, and log mileage. That's 90% of the tax value — the checklist above plus the right software covers the rest. Start with Stessa or Baselane (both free) and upgrade to Landlord Studio Pro only when you need depreciation automation.
Frequently Asked Questions
Can I deduct a new roof as a repair?
No — a roof replacement is an improvement and must be depreciated over 27.5 years. Minor roof patching can be a repair. When in doubt, ask your CPA; the repair/improvement split is the most common audit trigger for landlords.
Do I need separate accounting software for taxes?
No. In our tests, Stessa and Baselane both produce Schedule E-ready export reports from bank-synced transactions. What you do need is consistent tagging — that's where most landlords fall apart, not in the software choice.
Is depreciation worth tracking for a small landlord?
Yes. On a $240,000 building value, depreciation is ~$8,700/year in non-cash deductions. It also reduces your cost basis when you sell — a trade-off your CPA should model, but for most owners the yearly deduction wins.
What's the mileage rate for 2026?
The 2026 standard mileage rate is 70¢ per mile for business use. Keep a contemporaneous log (date, purpose, miles) — a spreadsheet or mileage app, filled in at the time of the trip.