Rental property looks like a straightforward proposition: rent comes in, expenses go out, the difference is what gets reported. Owners are consistently surprised by how much more there is to it, and by how much of the difficulty is really a recordkeeping problem in disguise.

Almost none of it is hard. It just has to be set up properly, and most of it has to be done contemporaneously — reconstructing three years later is where the pain lives.

Separate the money

The single most valuable thing, and the most frequently skipped.

A dedicated bank account for the property. Rent in, expenses out, transfers to yourself as a deliberate separate step. If you have several properties, ideally an account each, though one account with disciplined categorization can work.

Everything downstream gets easier. Categorization becomes mechanical. The bank statement becomes a nearly complete record. Substantiation becomes trivial because the account only contains property activity.

Running a rental through a personal account works until someone asks you to prove a figure, at which point you’re picking transactions out of years of grocery shopping.

Track basis from day one

This is the part that costs real money when it’s missing.

Your basis is what you paid, adjusted over time. It determines depreciation while you own the property and gain when you sell it. It’s built from:

  • The purchase price and the closing statement
  • Certain acquisition costs, which are added rather than deducted
  • The split between land and building, since they’re treated differently
  • Capital improvements over the years
  • Depreciation claimed, which reduces it

That last one matters more than people expect. Depreciation reduces basis whether or not it was actually claimed — meaning failing to claim it doesn’t preserve basis, it just loses the deduction.

Keep a single running document from the day of purchase: closing statement, land/building allocation, and every improvement with date, description, and cost. Update it as things happen. Reconstructing it years later, from memory and incomplete receipts, is genuinely difficult.

Repairs versus improvements

The distinction that generates the most questions.

Broadly: a repair keeps the property in its existing condition and is generally deductible in the year incurred. An improvement betters the property, restores it substantially, or adapts it to a new use, and is generally capitalized and depreciated over time.

Fixing a broken window is a repair. Replacing every window in the building is more likely an improvement. The line is genuinely blurry in the middle, there are specific provisions that can simplify some cases, and the treatment affects both this year’s deduction and your eventual gain.

The practical advice: don’t decide this yourself at year end from a pile of invoices. Note what the work actually was — not just “contractor, $4,000” but what was done and why. That description is what allows a correct decision later.

Rental days and personal use

If you use the property personally at all, the accounting changes and the rules are specific about what counts.

Track, for each property, each year: days genuinely rented at market rate, days used personally, and days it sat vacant while available. Days spent working on the property may be treated differently from days spent enjoying it.

For a purely commercial rental with no personal use, this is trivial. For a holiday property you also use, it’s central, and it can only be recorded as it happens.

Categories worth tracking separately

  • Rent received, by tenant and period
  • Security deposits — held, not income, until applied
  • Mortgage interest (separately from principal)
  • Property taxes
  • Insurance
  • Repairs and maintenance
  • Capital improvements — kept separate from repairs
  • Management fees
  • Utilities paid by you
  • Advertising and tenant-finding costs
  • Professional fees
  • Travel to the property
  • Supplies

The distinction between repairs and improvements, and between deposits and rent, are the two that most often cause problems later.

Deposits are not income

Worth stating plainly because it’s such a common error. A security deposit you’re holding and expect to return is not income when received. If you later keep part of it for damage or unpaid rent, that portion generally becomes income at that point.

Track deposits as a liability. It’s a small thing that’s tidy when done right and awkward when it isn’t.

Multiple properties

Track each one separately from the beginning, even when it feels like overhead.

Results are generally determined per property. Basis and depreciation are per property. When you eventually sell one, you’ll need its full history isolated from the others. Aggregated records that later need splitting are a genuinely tedious problem, and it grows with every year you leave it.

Losses may not be immediately usable

A rental producing a tax loss doesn’t always mean the loss reduces your other income this year. Rules limiting when rental losses can offset other income are among the more complex parts of this area, and they depend on income levels and how actively involved you are.

Losses that can’t be used now generally aren’t lost — they’re carried forward and may become usable later, including on sale. But it means the year-one expectation of a loss offsetting salary income is frequently wrong, and it’s better to know that before buying than after.

When you sell

Everything above converges here. Gain depends on basis, which depends on the purchase records, the improvement history, and depreciation claimed across every year of ownership.

Depreciation gets accounted for on sale in a specific way that surprises owners who weren’t expecting it. It’s not a reason to avoid claiming depreciation — you’re treated as having claimed it regardless — but it is a reason to understand the eventual position rather than discovering it at closing.

Owners with complete records handle this straightforwardly. Owners without them spend an unpleasant few weeks reconstructing a decade.

The short version

Separate account. Running basis document from day one. Note what repair work actually was, not just what it cost. Track deposits as liabilities. Keep each property separate.

Five habits, none demanding, and together they turn a genuinely complicated area into a manageable one.

This article is general information, not tax advice. Rental taxation depends heavily on specifics — get in touch to talk about your properties.