Real Estate Tax Calc
The setup
Suppose you buy a residential rental for $320,000. The county assessor's statement shows land at 20% of total value ($64,000) and the building at 80% ($256,000). Land is never depreciable. Annual MACRS depreciation = $256,000 ÷ 27.5 = $9,309 per year.
Deductions over time
Over 10 years you accumulate $93,090 in total depreciation. In a 24% federal bracket, the annual deduction saves roughly $2,234 in taxes — about $22,340 over the decade. This is a non-cash deduction; the property's market value can grow while depreciation reduces taxable income each year.
Recapture at sale
Sell after 10 years for $450,000. Adjusted basis = $320,000 − $93,090 = $226,910. Total gain = $450,000 − $226,910 = $223,090. Recapture slice: $93,090 taxed at up to 25% = up to $23,273. Remaining $130,000 long-term capital gain at 15% = $19,500. Estimated federal tax: roughly $42,773, before state and any NIIT. Use the calculators below to run your own numbers.
The first-year deduction is smaller than a full year
The $9,309 figure above is the full-year deduction. Your actual year-one amount depends on the month you placed the property in service, because real estate uses the mid-month convention. If you placed this $256,000 building in service in April, the MACRS first-year factor is 2.576%, giving $256,000 × 2.576% = $6,595 — not the full $9,309. The missing portion is recovered at the tail end of the 27.5-year schedule.
So a precise example tracks the placed-in-service month. For simplicity, the numbers below assume a full first year, but when you run your own property, use the Publication 946 table factor for your actual month. The difference matters most in year one and in the year you sell, both of which are partial years under the mid-month convention.
Adding shorter-life components with cost segregation
Now suppose a cost segregation study on the same $320,000 house reclassifies $40,000 of the building basis into shorter-life classes — say $25,000 of 5-year property (appliances, carpeting, specialty electrical) and $15,000 of 15-year land improvements (driveway, landscaping, fencing). That leaves $216,000 in the 27.5-year shell ($216,000 ÷ 27.5 ≈ $7,855/year).
With 100% bonus depreciation restored for property placed in service after January 19, 2025, the full $40,000 of reclassified components is deductible in year one. Year-one depreciation jumps from about $9,309 to roughly $47,855 ($40,000 bonus + $7,855 shell). At a 24% marginal rate that is about $11,485 of first-year tax savings — versus roughly $2,234 under straight-line alone. The trade-off is more recapture later, some of it at higher Section 1245 ordinary rates.
A commercial variation: 39-year property
The same mechanics apply to commercial real estate, but the recovery period is 39 years instead of 27.5. Take a $600,000 commercial building with a 25% land allocation: building basis is $450,000, and straight-line depreciation is $450,000 ÷ 39 = $11,538 per year. Over 10 years that is $115,380 of accumulated depreciation.
Because the recovery period is longer, each year's deduction is proportionally smaller than for residential property — a $450,000 residential building would deduct $16,364/year over 27.5 years. Commercial owners often lean more heavily on cost segregation precisely because the 39-year shell is so slow; pulling components into 5-, 7-, and 15-year classes (and bonus depreciation) makes a larger relative difference.
Where NIIT and state tax change the sale math
The $42,773 federal estimate above ignores two common add-ons. First, the 3.8% Net Investment Income Tax applies if your modified AGI in the sale year exceeds $200,000 (single) or $250,000 (married filing jointly); on the full $223,090 gain that is up to about $8,477 more. Second, state income tax generally applies to the entire gain — recapture included — with no federal-style 25% cap. In a state with a 6% rate, that is roughly $13,385 on this sale.
Stacking those on the federal figure, a high-income seller in a taxed state could owe in the neighborhood of $64,000 on the same sale — versus the $42,773 federal-only estimate. This is why a realistic depreciation example has to model NIIT and state tax, not just the headline federal numbers. The depreciation recapture calculator below lets you layer them in.
Was the depreciation worth it? Running the net benefit
It is fair to ask whether taking depreciation helps if you just pay it back as recapture at sale. The answer is usually yes, for two reasons. First, rate arbitrage: each dollar of depreciation saved you tax at your ordinary marginal rate during ownership (say 24% or 32%), while the recapture is capped at 25% federally — a favorable spread for higher-bracket owners. Second, time value: you got the deductions over ten years and pay the recapture only at sale, so inflation and reinvestment work in your favor.
And critically, skipping depreciation does not avoid recapture — the IRS bases it on depreciation "allowed or allowable," so you would owe the same recapture with no deductions ever taken. Add the option to defer recapture entirely with a 1031 exchange, or eliminate it via a step-up in basis at death, and claiming depreciation is almost always the right move.
Capital improvements stack their own schedules
The single-line example above assumes you never improve the property, but real rentals accumulate capital improvements, and each one starts its own depreciation schedule. Continuing the $256,000-building example: suppose in year 4 you replace the roof for $14,000 and in year 6 you install a new HVAC system for $9,000. Each is a separate 27.5-year asset placed in service in its year, adding roughly $509 and $327 of annual depreciation respectively.
By year 7, your total annual depreciation is about $9,309 + $509 + $327 = $10,145, and all three schedules run in parallel. Repairs, by contrast — patching that same roof, servicing the HVAC — are deducted in full the year paid and never touch basis or depreciation. Keeping improvements and repairs straight, and tracking each improvement's own schedule, is what makes the accumulated-depreciation figure accurate when you finally sell.
Partial-year depreciation in the year you sell
Just as the mid-month convention shrinks your first-year deduction, it also gives you a partial deduction in the year of sale. You depreciate the building through the middle of the month you dispose of it, then stop. If you sell the $256,000-building rental in September of year 11, you claim depreciation for 8.5 months of that year (roughly $256,000 × the September mid-month factor), which is added to your accumulated depreciation before computing the gain.
Investors often forget this final partial-year deduction, understating both the deduction they are entitled to and the accumulated depreciation that must be recaptured. The two move together: the extra depreciation in the sale year reduces adjusted basis by the same amount it adds to the recapture pool, so it is close to a wash on total tax but still worth claiming correctly.
What changes if you converted a home to a rental
The example assumes you bought the property as a rental. If instead you converted a former primary residence to a rental, the depreciable basis is the lesser of (a) the property's adjusted basis (what you paid plus improvements) or (b) its fair market value on the conversion date — with land stripped out either way. This special rule prevents you from depreciating a decline in value that occurred while it was your home.
So a home you bought for $300,000 that is worth only $270,000 when you convert it uses the lower $270,000 (less land) as the depreciable basis. If it appreciated to $360,000, you still use your $300,000 cost basis (less land), not the higher market value. This conversion basis then drives the same MACRS calculation shown above — and the same recapture analysis when you eventually sell.
Where the deduction lands on your tax return
The $9,309 figure doesn't appear by magic — you compute and claim it through specific forms. Each asset placed in service is reported on Form 4562 (Depreciation and Amortization), which lists the property, its basis, method (straight-line for real property), convention (mid-month), and recovery period (27.5 or 39 years). The resulting deduction then flows to Schedule E (Supplemental Income and Loss), where it reduces the net rental income or deepens the rental loss you report.
You only have to file a fresh Form 4562 in the first year an asset is placed in service (and in years you add new assets or claim a Section 179 or bonus election); in later years the ongoing straight-line deduction carries directly to Schedule E. Keep every year's Form 4562 and your running depreciation schedule — that cumulative record is exactly what you (or your preparer) will use to compute accumulated depreciation and the recapture figure when you finally sell.
Why a higher bracket makes the deduction worth more
The $2,234-a-year tax saving in the example assumed a 24% marginal rate. The same $9,309 deduction is worth far more to a higher-income owner: at a 32% marginal rate it saves about $2,979 a year ($29,790 over the decade), and at 37% roughly $3,444 a year ($34,440 over ten years). Because the recapture at sale is capped at 25% regardless of your bracket, the rate arbitrage — deducting at 32% or 37% now, repaying at a 25% ceiling later — grows with your income.
This is why depreciation is most valuable to owners in the top brackets with enough passive income (or real-estate-professional status) to actually use the deduction currently. A lower-bracket owner whose losses are suspended under the passive activity rules still benefits, but the timing advantage is weaker because the deduction is parked until released rather than cutting this year's tax.
Frequently asked questions
How much tax does depreciation recapture actually cost?
At the 25% federal cap, each dollar of depreciation claimed generates up to 25 cents in future recapture — while the deduction saved you your marginal rate each year. The net benefit is positive if your marginal rate exceeds 25%.
Which form do I use to claim rental depreciation?
Report each depreciable asset on Form 4562 in the year you place it in service; the deduction then flows to Schedule E, which nets it against rental income. In later years with no new assets, the ongoing straight-line amount carries to Schedule E without a new Form 4562.
Does depreciation reduce my actual cash flow?
No — it is a non-cash deduction. You claim it on paper to lower taxable income, but no money leaves your account. That is precisely why a profitable rental can show a tax loss: the building's depreciation offsets cash income you actually collected.
Is the recapture based on the selling price?
No — recapture is based on depreciation claimed, not the sale price. It equals the lesser of accumulated depreciation or the total gain.
Why is my real first-year deduction less than basis ÷ 27.5?
Because real estate uses the mid-month convention. The full-year figure (basis ÷ 27.5) applies only to complete years; year one is prorated based on the month you placed the property in service, using the Publication 946 table factor for that month.
How much bigger is the deduction with cost segregation?
Substantially, in year one. In the example above, reclassifying $40,000 into shorter-life classes and applying 100% bonus depreciation lifts the first-year deduction from about $9,309 to roughly $47,855. The lifetime total is similar, but far more is pulled into year one — at the cost of higher recapture later.
Does state tax apply to the recapture portion?
Generally yes. Most states tax the entire gain, including the recapture slice, as ordinary income with no 25% cap. Combined with the 3.8% NIIT for high earners, the real tax on a sale can be well above the federal-only estimate.
What basis do I use if I converted my home to a rental?
The lesser of your adjusted basis (cost plus improvements) or the property's fair market value on the conversion date, with land excluded either way. This special rule prevents depreciating a decline in value that occurred while it was your personal home. That conversion basis then drives the standard MACRS calculation.
Do capital improvements change the depreciation example?
Yes. Each capital improvement (a new roof, HVAC, or addition) is a separate asset placed in service in its year and depreciated on its own schedule, adding to your annual deduction. Routine repairs, by contrast, are deducted in full when paid and never affect basis or depreciation.
Sources
- IRS Topic No. 409 — Capital Gains and Losses
- IRS Publication 544 — Sales and Other Dispositions of Assets
- IRS Publication 946 — How to Depreciate Property
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.