Depreciation for Short-Term Rentals

Depreciation is a timing mechanism, not a free deduction

Start with what depreciation really is. When you buy a rental building, the tax law doesn't let you deduct the whole cost in year one — but it doesn't make you wait until you sell, either. Instead it lets you recover the cost of the building gradually, a slice each year, over a fixed recovery period. That annual slice is a real deduction against your rental income, and you take it without writing a check that year. That's why real estate feels tax-advantaged: the paper deduction can shelter cash income.

Here's the part most owners miss. Depreciation is best understood as moving deductions through time rather than as a permanent free deduction. Every dollar you depreciate reduces your basis in the property (roughly, your remaining unrecovered cost). Lower basis means a larger gain when you eventually sell, and prior depreciation shapes the tax consequences at that point (more below). So the honest way to see depreciation is as a timing and rate mechanism: you get the deduction now, against this year's income, and you settle up later — often at a different rate and years down the road, which is exactly why it can still be worth a great deal. But it is a decision with two ends, and this guide's whole job is to make you look at both.

(This is educational information about how depreciation works, not individualized tax advice; the numbers on your return are your qualified tax professional's. We'll flag where something is the rule versus BFC's read.)

What you depreciate — and what you don't

You depreciate the building and its improvements. You do not depreciate the land. Land doesn't wear out, become obsolete, or get used up, so the tax law treats it as non-depreciable. That makes the very first step a basis allocation: split what you paid between the land and the building (and, later, between the building and any shorter-life components). Get that split wrong — put too much on the land — and you quietly shrink every year's deduction; put too much on the building and you've overstated it. The allocation is a factual determination that should be reasonable and supportable (which is a documentation question — Principle 48).

Improvements you make later — a new roof, an addition, a renovation — are generally capitalized and depreciated on their own, not deducted all at once, while true repairs are a current expense. Where that line falls is a Bookkeeping-and-classification question the records have to support; the point here is simply that depreciation attaches to capital cost, and land isn't part of it.

The recovery period is its own determination

How long you depreciate over depends on how the property is classified for depreciation — and that is a separate determination from the ones you've already made. Two periods matter:

• Residential rental property — 27.5 years. This is the default for a building where 80% or more of the gross rental income comes from dwelling units.
• Nonresidential real property — 39 years. This is where real property lands when it isn't residential rental property.

The STR-specific wrinkle is that §168 has its own definition of residential rental property. It generally requires 80% or more of the building's gross rental income to come from dwelling units — and for this purpose the statute excludes from "dwelling unit" a unit in a hotel, motel, or other establishment more than half of whose units are used on a transient basis.

That creates a genuine classification question for transient lodging, but it does not create a simple rule that an STR with short stays uses a 39-year recovery period. The statute provides no numeric average-stay test for "transient basis," and applying its hotel, motel, or other establishment language to a particular STR can require interpreting the specific facts and the authorities. Notice what that establishment-level language is doing: it turns on whether more than half the units in the establishment are used transiently — so a standalone house, an individually owned condominium, and a multi-unit lodging operation should not simply be assumed to receive identical treatment, and short stays alone don't resolve it.

Most importantly — and this is the doctrine that ties the whole hub together — do not import the seven-day or 30-day tests from §469 to make this call. Those tests determine rental-activity treatment for the passive-activity rules (Principles 44 and 45); they do not determine the depreciation recovery period. Recovery period is a separate classification question under §168, established on its own facts. Same property, different parts of the law: classification determines which rules apply — here, which recovery period — one purpose at a time.

Placed in service — when the clock starts

Depreciation begins when the property is placed in service — ready and available to rent — not when you bought it and not when the first guest checks in. Once the unit is ready and available for its specific use, it's in service even if it sits empty waiting for bookings. That timing matters: it fixes when your deductions start, and it's a factual point your records should establish (listing live, calendar open, property ready).

You can't skip it to avoid the consequence

Depreciation is, in effect, not optional. The rule that catches people is the allowed-or-allowable rule: your basis is reduced by the depreciation you could have claimed, whether or not you actually claimed it. Decline to depreciate, and you don't preserve your basis or dodge the settle-up at sale — you simply throw away the deduction while still taking the basis reduction that drives the future gain. The consequence at sale is priced off the depreciation that was allowable, not merely what you took. That's why "I just won't depreciate it" is not a strategy; it's the worst of both ends.

Acceleration is a lever — and a separate decision

The recovery periods above are the straight-line default. The tax law also lets you pull deductions forward, faster. Two levers matter for STRs:

• Cost segregation breaks the building into its components and reclassifies the ones that qualify — certain fixtures, finishes, and land improvements — into shorter recovery classes (commonly 5-, 7-, and 15-year property) instead of the 27.5- or 39-year building. It doesn't invent new deductions; it re-times the ones you already have, pulling more into the early years.
• Bonus depreciation can accelerate deductions for qualifying shorter-life property, deducting a large share up front rather than over its class life — which is what makes cost segregation so powerful when the two are combined. Section 179 may also apply to certain qualifying property when its separate requirements are met.

Two boundaries here, on purpose. Whether cost segregation is worth it for your property is its own decision — the study has a cost, the benefit depends on your facts, and the acceleration deepens the consequence at the other end. That decision gets its own guide (Principle 51). And the specific bonus-depreciation percentage and §179 limits are set by current law and change — exactly the kind of number that dates a page, so you'll find the current figure on our current-law page, not here. What belongs here is the doctrine: acceleration is a timing lever, and pulling more deduction forward now pulls more consequence forward to the sale.

Today's deduction, tomorrow's disposition consequence

Depreciation you take — and depreciation that was allowable — reduces adjusted basis and therefore affects the tax consequences when you dispose of the property. That's the second end of the timing decision. At a doctrine level, the direction is what matters:

• The building (real property) — prior depreciation can contribute to unrecaptured §1250 gain, subject to the special rate rules for unrecaptured §1250 gain.
• Cost-seg components (personal property) — shorter-life §1245 property created through cost segregation can have ordinary-income recapture, which is why aggressive acceleration on components has a sharper tail.

This is where BFC's read comes in, stated neutrally: because the deduction lands now against this year's income and the disposition consequence lands later under its own rate rules, depreciation can be a real net benefit — but only when you've looked at both ends together. The mechanics of §1250 and §1245 treatment, basis, gain, and the net investment income tax at sale belong to the Wealth & Exit domain; this page's job is to make sure you never treat the front-end deduction as the whole story. Take the deduction knowing the tail exists, and time your decisions accordingly.

Your action plan

1. Allocate basis between land and building. Land isn't depreciable — start with a reasonable, supportable split, and keep what supports it (P48).
2. Determine the recovery period on its own facts. 27.5-year residential rental vs. 39-year nonresidential is a separate question from your passive-activity classification — don't borrow the seven-day test from P44/P45 to set it.
3. Fix the placed-in-service date. Depreciation starts when the property is ready and available to rent; record when that was.
4. Decide on acceleration deliberately — or route it. Whether cost segregation (and bonus depreciation) is worth it is its own decision (P51); the current bonus %/§179 limit lives on the current-law page.
5. Price the tail before you pull deductions forward. More acceleration now means more disposition consequence at sale — evaluate both ends together; the sale mechanics are Wealth & Exit.
6. Keep the depreciation schedule with your supporting records. It tracks depreciation method, recovery period, and accumulated depreciation, and helps support your adjusted-basis records (P48).

The bottom line

Depreciation is easier to understand when you look at both ends of the transaction: it shelters cash income now, and it provides deductions over time while reducing adjusted basis and affecting the eventual disposition. See it as a decision with two ends — a benefit this year and a consequence at sale — and it stops being either a magic write-off or a trap. Depreciate the building and not the land, determine the recovery period on its own facts, take the deduction knowing the basis reduction is priced off what was allowable, and treat acceleration as a lever you pull with the tail in view. Do that, and depreciation becomes what it's meant to be: a timing tool you use on purpose, not a surprise you meet at closing.

About the author

Matt Nunn is the founder of Builders Finance. He has spent two decades working with the financial side of real estate businesses, and started Builders Finance to give short-term-rental operators the financial systems, frameworks, and plain-language education that most hosting advice skips over. Builders Finance publishes educational content for STR owners; it is not legal or tax advice, tax treatment depends on your facts and circumstances, and it is not a substitute for guidance from your own qualified tax professional.

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Educational information only — not individualized tax, legal, or investment advice. The worked example is an illustrative model, not a projection or a recommendation.