How Depreciation Works for Rental Property

Depreciation is often described as one of the best tax benefits of owning rental real estate, and it can be significant, but it's also one of the most misunderstood. Investors sometimes treat it as free money with no strings attached. It isn't. It's a deduction based on a specific set of IRS rules, and it comes with a repayment mechanism on the back end that a lot of first-time landlords don't find out about until they sell. This article explains the general concept in plain terms. It is not tax advice, and every number and rule referenced here should be confirmed with a CPA or tax professional who knows your specific situation before you rely on it.

01What depreciation actually deducts

The IRS treats a rental building as an asset that wears out over time, even if the property is well-maintained and its market value is going up. Depreciation lets you deduct a portion of the building's value each year as a paper expense, meaning it reduces your taxable rental income without you having to spend any actual cash in that year. That's what makes it different from most other deductions on a rental: it doesn't require a corresponding check written.

The key word is "building." Depreciation applies to the structure and certain qualifying improvements, not the land underneath it. Land isn't considered to wear out, so when a property is purchased, the total price generally has to be allocated between land value and building value, and only the building portion gets depreciated. That allocation is a real calculation, sometimes based on the assessor's breakdown or an appraisal, and it's worth getting right with professional input rather than eyeballing a percentage.

02The recovery period, in general terms

The IRS sets a standard recovery period over which residential rental property is depreciated, currently around 27.5 years, though you should confirm the current figure and how it applies to your specific property with a tax professional rather than treating that number as fixed. Commercial property typically uses a different recovery period. The way it generally works is that the depreciable building value is divided across that recovery period, producing an annual deduction, though the details of timing (including the year a property is placed into service) can affect the first and last year's amount.

This deduction happens whether or not the property is appreciating in market value. That's the part that surprises people: the tax code lets you write off a portion of the building's cost basis every year on the theory that it's wearing out, even while the property might be worth considerably more than you paid for it. Both things are true at once, and reconciling them is exactly where depreciation recapture comes in.

03Depreciation recapture: the part people forget about

Here's the mechanism to be aware of, even if you never calculate it yourself: when you eventually sell a property you've depreciated, the IRS generally wants some of that benefit back. The depreciation you claimed over the years reduced your cost basis, which increases your taxable gain when you sell, and there's a separate rule (depreciation recapture) that can apply a different tax treatment specifically to the amount of depreciation you claimed, on top of ordinary capital gains treatment on the rest of the profit.

In practice, this means the tax savings depreciation gave you year after year aren't necessarily a permanent, no-strings benefit. Some of it is effectively a deferral: you get the deduction now, and give some of it back, often at a different rate, when you sell. That doesn't make depreciation a bad deal, but it does mean the full picture only shows up when you model both the years you own the property and the year you sell it, not the annual deduction in isolation.

This is also part of why some investors use a 1031 exchange when they sell: it can defer both the capital gain and depreciation recapture into the replacement property rather than triggering the tax at the time of sale, though the exact mechanics again depend on your situation and require a qualified intermediary and professional guidance to execute correctly.

04Why this belongs in your underwriting, and why it belongs with a CPA

When investors evaluate a rental property, the depreciation deduction is sometimes part of why the after-tax cash flow looks better than the pre-tax numbers alone would suggest. If you're comparing deals using something like a real estate ROI framework, it's worth knowing that the tax-adjusted return and the raw cash-on-cash return can tell different stories, and depreciation is a big part of that gap for a leveraged rental property.

But the calculation itself, how much depreciable basis you have, what recovery period and method applies, how recapture will actually hit you at your specific tax bracket in a future year you can't fully predict today, is not something to estimate from a general article. This is squarely CPA territory. A tax professional can also tell you about things like cost segregation studies, which can accelerate some depreciation for certain properties, and about how your particular entity structure (personal ownership vs. an LLC, for instance) interacts with these rules.

05The bottom line

Depreciation is a real, legitimate deduction that reduces the taxable income from a rental property without requiring extra cash outlay, based on the concept that the building (not the land) wears out over a set recovery period defined by the IRS, currently around 27.5 years for residential rental property, though you should verify the current figure. It comes with a repayment mechanism, depreciation recapture, that applies when you sell. Treat depreciation as a genuinely valuable but genuinely complicated part of rental property ownership, and don't try to calculate your specific depreciation schedule, basis allocation, or recapture exposure without a CPA. The general concept is useful to understand going in; the exact numbers are not a DIY exercise.