Year-End Bookkeeping Cleanup
Most landlords treat bookkeeping as a January chore. Close out the year, hand everything to the accountant, done.
That timing is backwards. Tax planning only works while you can still change the outcome, and you can’t plan with numbers you don’t have. If your books aren’t current by December 31, you’re making your biggest decisions blind.
Clean books are what let you decide whether a cost segregation study is worth it, prove your hours for real estate professional status, and know which deductions you actually qualify for. Here’s where to focus.
1. Reconcile every account
Match every bank account, credit card, and loan against its statements. This catches duplicates, missing deposits, and payments recorded twice. And if your personal and rental spending share an account, fix that now. Commingling is the biggest source of bookkeeping chaos and the fastest way to weaken your records if the IRS ever asks.
2. Keep the wrong things off your P&L
Three items trip up landlords constantly:
- Owner contributions and draws are your own money moving around. Not income, not expenses.
- Mortgage principal isn’t deductible. Only the interest is.
- Security deposits aren’t income when you receive them. They’re a liability you owe back. But a prepaid “last month’s rent” is income the day you get it, whatever you call it.
3. Get repairs vs. improvements right
This is the most consequential call you make all year. A repair is deducted now. An improvement is depreciated over many years. Fixing a leaky faucet is a repair. Replacing the plumbing system likely isn’t.
There are safe harbors that let you deduct costs you’d otherwise have to depreciate, including items up to $2,500 per invoice. Several require an election on your return, so they need to be decided deliberately, not by accident.
4. Get ahead of 1099s (the threshold changed)
For 2026, the 1099-NEC reporting threshold jumped from $600 to $2,000. Collect a W-9 from every contractor, handyman, and property manager now. Chasing them down in January is a headache nobody needs. The filing deadline for 2026 forms is February 1, 2027.
5. Sweep for the deductions with no paper trail
Mileage, home office, travel to your properties, professional fees, software. None is huge alone, but together they add up. One catch for 2026: the mileage rate is split, 72.5 cents for the first half of the year and 76 cents for the second. Your log needs dates, not just total miles.
Then look at the numbers
Once your books are clean, pull your P&L, balance sheet, and rent roll. This is where bookkeeping turns into planning. You’ll see whether you’re heading for a gain or a loss, and whether to accelerate expenses or pursue a bigger strategy while there’s still time.
If you look at your reports and can’t tell whether they’re right, that’s a signal in itself.
We work only with real estate investors, and helping landlords get clean books and turn them into real tax savings is what we do every day. If you want to head into filing season with numbers you can trust and a plan built on them, let’s talk before December 31.
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