Residential rental depreciation estimate Land is excluded from depreciable basis, the remaining cost is recovered over 27.5 years,
and the first calendar year uses the IRS mid-month convention based on the month the property
was placed in service.
Display currency
Change the display currency without changing the depreciation math.
Result
$7,840.91
January placement gives 11.5 months of depreciation in the first calendar year under the mid-month convention.
Depreciable basis
$225,000.00
Annual depreciation
$8,181.82
Monthly equivalent
$681.82
Recovery period
27.5 years
Planning checks
Placed in service month
January
First-year months counted
11.5 months
First-year deduction
$7,840.91
Planning estimate, not a filing-ready return This result does not separate personal-use days, improvements, appliances, bonus depreciation,
passive-loss limits, or state-specific tax rules. Confirm the final deduction with the IRS
rules that apply to your return and a qualified tax professional.
Rental property depreciation calculator guide: 27.5-year deduction, land value
A rental property depreciation calculator estimates how much of a residential rental property's purchase price can be recovered through straight-line depreciation under IRS rules. This guide explains why land is excluded, how the 27.5-year recovery period works, and how the placed-in-service month changes the first-year deduction under the mid-month convention.
What the calculator is measuring
Depreciation is the recovery of the building's cost over time. For a residential rental property, the calculator starts with the purchase price, removes the land value, and treats the remainder as the depreciable basis. That basis is then spread over 27.5 years using straight-line depreciation.
This makes the page useful for planning the annual deduction, estimating the first-year write-off, and checking whether the input values look realistic before you prepare a return. It is not a substitute for a tax filing checklist, but it is a practical way to see the size of the deduction before you hand the numbers to your accountant or software.
Depreciable basis = Purchase price - Land value
Land is not depreciated, so only the building and other depreciable acquisition cost remain in the basis.
Annual depreciation = Depreciable basis / 27.5
Residential rental property is typically recovered over 27.5 years under the straight-line MACRS rule.
First-year deduction = Annual depreciation x first-year months / 12
The mid-month convention changes the first calendar year because the property is treated as placed in service halfway through the month.
Why land and the placed-in-service month matter
The land portion of a rental purchase is excluded because land does not wear out in the same way as a building. A larger land allocation means a smaller depreciable basis and a lower annual deduction. That is why the land-value input has a direct effect on the result even when the purchase price stays the same.
The placed-in-service month matters because residential rental property uses the IRS mid-month convention. If you place the property in service in January, the calculator counts 11.5 months in year one. If you place it in service in December, only 0.5 month is counted. The annual deduction stays the same after that, but the first-year amount changes materially.
If you are comparing buying dates, closing timelines, or when a property becomes available for rent, that month can be just as important as the purchase price. A late-year closing does not eliminate the deduction, but it does delay part of it into later periods.
Worked example: 300,000 purchase price and 75,000 land value
Suppose the property cost 300,000 and the land portion is 75,000. That leaves a depreciable basis of 225,000. Dividing that basis by 27.5 years gives an annual depreciation amount of about 8,181.82.
If the property is placed in service in January, the first-year deduction is roughly 7,840.91 because the mid-month convention counts 11.5 months in year one. If the same property is placed in service in December, the first-year amount drops to about 340.91. The annual amount after that is unchanged; only the first calendar year moves.
This is the core planning value of the calculator. It helps you see the size of the deduction, the effect of land allocation, and the timing impact of a closing date or placed-in-service date before you move on to the return.
How to read the result cards
The headline result shows the first-year deduction rather than only the flat annual amount. That is usually the most useful answer when you are trying to understand the immediate tax effect of a purchase or a newly available rental.
The supporting cards show the depreciable basis, the annual straight-line amount, the monthly equivalent, and the recovery period. Those figures help you tell the difference between the tax basis, the annual deduction, and the calendar timing rule that changes year one.
The planning-check table then repeats the month and first-year deduction so you can sanity-check the numbers without reopening the form inputs. It is a quick way to compare different closing months or to see how the deduction changes when the land allocation shifts.
This is a planning estimator, not a filing engine. It does not separate personal-use days, handle appliances on separate schedules, or compute bonus depreciation, passive-loss limitations, or state-specific differences.
It also assumes you are looking at residential rental property rather than commercial real estate. If the asset includes major improvements, remodels, or separate depreciable components, those items may need their own treatment under the IRS rules that apply to your return.
Land is excluded from depreciation by design.
The calculator uses the residential 27.5-year recovery period.
The first year follows the mid-month convention.
Real returns can differ because tax treatment depends on your full return context.
Frequently asked questions
Why is land excluded from rental property depreciation?
Land is not treated as a depreciable asset because it does not normally wear out in the same way a building does. The calculator therefore removes the land value from the purchase price before applying the 27.5-year straight-line recovery rule.
Why does the placed-in-service month change the first-year deduction?
Residential rental property uses the IRS mid-month convention. That means the first calendar year is treated as if the property was placed in service halfway through the month, so a January placement gets much more first-year depreciation than a December placement.
Does this calculator handle commercial property?
No. This page is built for residential rental property. Commercial rental property uses a different recovery period and different tax treatment, so it needs a separate calculation.
Can I include appliances or major improvements in the same calculation?
Not in this calculator. Appliances, remodels, and other capital improvements may need to be tracked separately or depreciated on a different schedule. This page focuses on the base residential rental property deduction.
