The §121 Home-Sale Exclusion When You've Rented Out Your Home

The two-of-five-year test and the exclusion

Start with the rule most homeowners half-know. When you sell your principal residence, Section 121 lets you exclude up to $250,000 of gain from tax — $500,000 for many married couples filing jointly. To qualify, you have to pass the 2-of-5 test: you must have owned the home and used it as your principal residence for at least two years out of the five years ending on the sale date. The ownership and use years both have to fall in that five-year window, but they don't have to be the same two years.

One more condition that's easy to forget: you generally can't have used the §121 exclusion on another home within the two years ending on this sale. The $500,000 joint-return figure also has its own conditions. Generally, either spouse meets the ownership test, both spouses meet the use test, and neither used the exclusion in the applicable prior period. Meet all of it, and a quarter- or half-million dollars of gain can be excluded from tax.

Renting after you move out: the clock

Now the situation this page is about: you lived in the home, then moved out and rented it — the "accidental landlord," whether because of a job move, a slow market, or choice. The good news is that renting doesn't automatically cost you the §121 exclusion. The two-year use requirement looks back over five years, so you can move out, rent the place for a while, and still pass — as long as you sell before those two qualifying years fall outside the five-year window. As a rule of thumb, if you lived there two full years, that's roughly a three-year window after moving out to sell and still get the full exclusion.

That's not the only path, though. If you miss the ordinary test, you can still qualify for a reduced exclusion when the sale is due to a change in employment, health, or certain unforeseen circumstances. And special qualified-duty rules (military, Foreign Service, and similar) can suspend the five-year clock. Those exceptions have their own detailed rules. The point here is that being past the window doesn't automatically mean you get no exclusion at all.

The depreciation piece is never excluded

Here's the first thing that surprises people, and it's not optional: the depreciation piece is never excluded. For the years the home was a rental, you either took depreciation or were entitled to (the code counts it "allowed or allowable"). Depreciation you were entitled to take but did not claim still lowers your basis, so it still adds to your gain (§1016(a)(2)). But if your records establish that you claimed less than you were entitled to claim, the part §121 can't exclude is generally measured by what you actually claimed (§121(d)(6) carves out the "depreciation adjustments" defined in §1250(b)(3), and that definition uses the amount allowed where your records establish it was less than the amount allowable). Section 121 does not exclude the gain that comes from depreciation for periods after May 6, 1997. That gain is recognized at sale even when the rest of your gain is fully excluded.

Its character (the kind of gain it is for tax purposes, such as ordinary income or capital gain) follows the usual rules. Depreciation on the building generally produces unrecaptured §1250 gain, which is still capital gain but with its own maximum rate. Any shorter-life §1245 property can produce ordinary recapture, meaning that part is taxed as ordinary income. (The full character mechanics are in Depreciation & Gain Character at Sale.) So the accidental landlord's best case isn't "tax-free." It's the exclusion on the appreciation, but you still recognize the depreciation.

The order of events changes the answer

Now the part almost nobody gets right the first time: the order of events changes the answer. The statute has a concept called non-qualified use: periods, beginning January 1, 2009, when the home was not your principal residence. Gain allocated to those periods is not excludable. But there's a crucial exception: any period after the last date you used the home as your principal residence doesn't count as non-qualified use. Read that twice, because it splits every case into one of two patterns:

• You lived there first, then rented (residence → rental). The rental period comes after your last day of residence, so it generally falls in the exception and isn't non-qualified use. You can still exclude the full gain (minus the depreciation piece) — provided you're inside the 2-of-5 window. This is the ordinary accidental-landlord path, and it's the favorable one.
• You rented first, then moved in (rental → residence). Now the rental period sits before your residence, so it is non-qualified use. Here's the part that's easy to get wrong: it does not simply shrink the $250k/$500k ceiling. Instead, you first set aside the depreciation-related gain. The remaining gain is then allocated to non-qualified use, generally by aggregate non-qualified-use time ÷ total ownership period, and that allocated share can't be excluded. In the IRS's own example, two of five ownership years are non-qualified use, so 40% of the remaining gain falls outside the exclusion. So converting a rental into your home and living there two years doesn't get you the whole exclusion; the earlier rental years take a proportional share of the gain out of it.

Same two years of renting, opposite result — the only difference is which came first. That's the trap worth carrying out of this page.

Two boundaries for investors

One more boundary, because it catches investors specifically: if you acquired the home in a §1031 exchange and later convert it to a residence, §121 requires you to own it for at least five years before the exclusion applies. (That kind of exchange, also called a like-kind exchange, is one where you dispose of a property and acquire replacement real property without recognizing some or all of the gain.) And §121 and §1031 can be combined on a property that's been both a residence and a rental, but the mechanics are covered in The 1031 Exchange and Sell, 1031, or Refinance?. Read those before relying on either.

Where does the example rental these guides use sit in all this? Outside it. That owner bought the property as a pure investment and never lived in it, so §121 provides no exclusion. Any sale or exchange then follows the ordinary investment-property rules for gain, basis, and any applicable deferral (including the choice Sell, 1031, or Refinance? compares). §121 is specifically a former-residence rule.

One point is worth noting for any accidental landlord who did build up suspended passive losses while renting. Those are rental losses the passive-loss rules didn't let you deduct, carried forward. §121 is an exclusion, not a nonrecognition provision: the gain is realized and recognized, and then the qualifying gain is excluded from gross income. So a qualifying sale of your entire interest in the activity to an unrelated buyer can still trigger the §469(g) release of suspended losses, even though §121 excludes the home-sale gain. But the excluded gain itself isn't passive income for those losses to offset. The exclusion and the loss release are separate rules that can both show up on the same closing. Can I Actually Use My Rental Losses? and Suspended Losses and the Year You Sell carry the §469(g) detail.

Three things govern it

So the plain-English version: the home-sale exclusion can still reach an accidental landlord, but three things govern it.

• The 2-of-5 clock: sell before your residence years fall outside the five-year window, subject to the reduced-exclusion exceptions.
• The depreciation carve-out: the gain from the depreciation described above is always recognized.
• The order of events: residence-then-rental preserves the exclusion; rental-then-residence allocates a share of the gain to non-qualified use.

Know which pattern you're in before you count on a tax-free sale.