How Does Depreciation Work for a Rental Property?
A rental property doesn’t get expensed the way a repair bill does — the tax code treats it more like a long-term asset that wears out gradually, and that gradual wearing-out becomes a deduction spread across many years rather than claimed all at once.
The short answer
Depreciation lets a rental property owner deduct a portion of the property’s cost each year against rental income, based on the idea that a building has a limited useful life and loses value over time through ordinary wear. Only the building itself is depreciable — the land underneath it is not — and the deduction is spread over a standard recovery period set by tax rules, rather than being taken as a single deduction in the year of purchase.
Why only the building counts
Land generally doesn’t wear out, at least not in the way tax rules define depreciation, so when a rental property is purchased, the total price typically has to be divided between the land value and the building value before depreciation can be calculated. Only the portion allocated to the building — sometimes called the depreciable basis — becomes eligible for the annual deduction. This allocation matters quite a bit, since two properties purchased for the same total price but with different land-to-building ratios can produce meaningfully different depreciation deductions.
The idea of a recovery period
Rather than deducting the building’s cost all in the year it was bought, tax rules spread that deduction evenly across a set number of years known as the recovery period. The exact number of years is set by current tax law and specific to residential versus other property types, so it’s best treated as a detail to confirm at the time rather than something to memorize as a fixed fact, since these figures can be adjusted by lawmakers over time. The general concept, though, is straightforward: the depreciable basis divided across the recovery period produces a consistent annual deduction, assuming no changes to the property’s basis along the way.
Why depreciation matters for taxable rental income
Rental income is generally taxable, but it isn’t taxed on the full rent collected — allowable expenses reduce that figure first, and depreciation is one of the largest of those deductions for many rental owners, precisely because it doesn’t require any actual cash outlay in the year it’s claimed. A property that’s cash-flow positive on a month-to-month basis can still show a loss for tax purposes once depreciation and other expenses are factored in, which is part of why rental real estate is often discussed as tax-advantaged relative to other forms of income — though limits on using rental losses against other income can apply.
What depreciation doesn’t erase
- It reduces taxable income, not the mortgage. Depreciation is a paper deduction against rental income; it has no effect on the actual loan balance or monthly payment owed on the property.
- It doesn’t mean the property is actually losing value. Real estate can appreciate in market value even while being depreciated for tax purposes — the two concepts are unrelated.
- It eventually gets accounted for at sale. The deductions claimed over the years become relevant again when the property is sold, since accumulated depreciation affects the calculation of gain at that point.
The takeaway
Depreciation is the mechanism that lets a rental property owner spread the building’s cost across many years as an ongoing deduction against rental income, based on the building portion of the purchase price and a recovery period set by current tax rules. It’s a genuinely useful piece of how rental real estate is taxed, but it’s also a running tally that matters again down the road, which is worth keeping in mind rather than treating each year’s deduction as the end of the story.