Big Mistake: A 70-Year-Old Landlord Never Claimed Depreciation on His Rental. The IRS Will Tax the Sale as if He Did

A 70-year-old landlord bought a small rental house decades ago, collected rent, deducted repairs, mortgage interest, and property taxes on Schedule E every year, and never once claimed depreciation. He assumed skipping it kept things simple and would let him sell the property at a lower tax bill later. He is about to learn a painful lesson: the IRS taxes the sale as if he took every dollar of depreciation he was entitled to, whether he actually deducted it or not.

This scenario is more common than most people realize. Small landlords who self-prepare returns, inherit property, or use a bookkeeper unfamiliar with real estate frequently miss the depreciation deduction. Reddit threads on r/tax and r/realestateinvesting fill up every spring with the same discovery: an owner is preparing to sell, the accountant asks for the depreciation schedule, and there is none.

Why This Mistake Is So Expensive

Residential rental property is depreciated over 27.5 years under the modified accelerated cost recovery system. On a house with a $200,000 depreciable basis, that is roughly $7,200 a year of deductions the landlord could have used to shelter rental income. Skip it for 20 years and you have walked past somewhere around $140,000 of ordinary deductions.

Here is the catch that makes this a wealth-stage disaster rather than a mild oversight. Section 1250 requires the IRS to recapture depreciation that was allowed or allowable when you sell. “Allowable” means the depreciation you were entitled to take, whether or not you actually claimed it. The taxable gain calculation reduces your basis by all of that phantom depreciation, and the recaptured portion is taxed at rates up to 25% as unrecaptured Section 1250 gain. You get the tax bill without ever having received the tax benefit.

Sale prices only sharpen the pain. The Case-Shiller National Home Price Index sat at near 337 this summer, the highest reading in the supplied history. A property bought in the 1990s or early 2000s is likely sitting on enormous appreciation, which means a large capital gain stacked on top of a large recapture figure.

Core Tension: Fix the Past or Live With It

The single most important decision here is whether to file Form 3115 (Application for Change in Accounting Method) before the sale closes. This is the only clean way to recover missed depreciation without amending years of old returns.

Form 3115 lets a taxpayer take a Section 481(a) adjustment, a single catch-up deduction in the current year equal to all the depreciation that should have been claimed in prior years. For a landlord staring at six figures of missed deductions, that adjustment can shelter a huge chunk of ordinary income in the year it is filed. It does not eliminate the recapture on sale, but at least the landlord finally gets the deduction the IRS is going to tax him on anyway.

Two Realistic Paths

1. File Form 3115, then sell. Claim the catch-up deduction in 2026, use it to offset rental income, pension distributions, IRA withdrawals, or other ordinary income, then sell the property in 2027. The recapture bill still shows up, but it is offset by a real deduction that has real cash value. For most landlords in this position, this is the clearly better path.
2. 1031 exchange into another rental. A like-kind exchange defers both the capital gain and the depreciation recapture. At age 70, this only makes sense if the plan is to hold the replacement property until death, at which point heirs receive a stepped-up basis and the recapture liability effectively disappears. Trading into more landlord headaches at 70 to chase a tax deferral is a poor tradeoff unless estate planning is the primary goal.

Selling without doing anything is the inferior choice. The recapture happens regardless. Skipping Form 3115 simply means paying tax on depreciation you never got to deduct.

What to Do This Week

Pull every Schedule E filed on the property, confirm depreciation was never claimed, and get a cost segregation-aware CPA on the phone before signing a listing agreement. Form 3115 must be filed with a timely return, and the sequencing matters: the catch-up deduction is most valuable in a year where you have income to offset it against, which may argue for accelerating an IRA withdrawal into the same tax year.

With the 10-year Treasury yielding roughly 5%, the after-tax proceeds have a genuine home in short-duration Treasuries or a laddered portfolio. That makes the tax cleanup worth doing right the first time. The depreciation recapture rule is one of nine IRS traps that quietly drain retirement accounts, and we mapped all of them in a free guide here. The mistake to avoid is closing the sale first and asking the accountant about depreciation afterward. By then, Form 3115 is off the table.

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