Tax Rules for Converting a Primary Residence to Rental

The tax rules for converting a primary residence to a rental reclassify the home from a personal asset to a business one, which unlocks deductions for operating costs and depreciation but also triggers a special basis rule, passive loss limits, and clocks that affect your eventual sale. The single most consequential step happens on the conversion date itself: the IRS uses a “lesser of” rule to set your depreciable basis, and that number governs your deductions for the next 27.5 years and your tax bill when you sell.

Setting Your Basis on the Conversion Date

Your basis for depreciation is the lower of your adjusted cost basis or the property’s fair market value on the date you place it in service as a rental.¹ Adjusted cost basis is what you originally paid for the home, plus capital improvements you made while living there, minus any casualty losses or energy credits you previously claimed.

If the home’s market value has dropped below your adjusted basis by the conversion date, you are stuck depreciating from the lower market value. The gap between what you paid and what it’s worth never becomes a deductible loss. The rule is designed to stop homeowners from converting paper losses on personal assets into business deductions.

A second wrinkle shows up when you sell. If you later sell at a loss, the IRS calculates that loss using the fair market value on the conversion date, not your original cost. If you sell at a gain, the IRS switches back to your original adjusted cost basis to measure the taxable profit.¹ You get the worse of both worlds for basis.

Get a professional appraisal or a comparative market analysis on the day the property goes into service. That one document anchors your depreciation schedule and every future gain or loss calculation. Without it, the IRS can challenge whatever number you later put on a return.

What You Can Deduct as a Landlord

Once the property is in service as a rental, ordinary operating costs become deductible: mortgage interest, property taxes, insurance, utilities you pay as the landlord, property management fees, and professional services such as tax preparation and legal advice. Routine repairs are fully deductible in the year you pay for them.

Capital improvements get different treatment. Work that adds value, extends the property’s useful life, or adapts it to a new use must be capitalized and recovered through depreciation. A new roof or a kitchen renovation is a capital improvement. Fixing a leaky faucet or repainting a room is a repair. Capitalizing something that should be a current deduction delays the tax benefit for decades; deducting a capital improvement in full invites an audit adjustment.

How Depreciation Works

Residential rental property is depreciated over 27.5 years under the Modified Accelerated Cost Recovery System using the mid-month convention.² The convention treats the property as placed in service at the midpoint of the month it first becomes available for rent, regardless of the actual day. Land is never depreciable, so you must allocate your basis between the structure and the land. County tax assessments often provide a reasonable starting ratio.

“Placed in service” means the property is ready and available for rent, not the day a tenant moves in. If you finish repairs and list the property on July 5 but don’t sign a tenant until September, depreciation starts in July.¹ Getting that date wrong shortchanges your first-year deduction.

Depreciation is a non-cash deduction. It reduces taxable rental income without any out-of-pocket spending. On a $300,000 structure, the annual deduction is roughly $10,909. Over the holding period, it is one of the largest tax benefits of owning rental property. But every dollar of depreciation you claim (or could have claimed) will be recaptured as taxable income when you sell. It is a deferral, not forgiveness.

Why Rental Losses Often Can’t Offset Your Salary

Rental real estate is treated as a passive activity for most taxpayers. Net losses from the rental can only offset other passive income, not your salary, wages, or investment earnings.³ Losses are common in the early years because depreciation runs high. Without passive income to absorb them, those losses are suspended and carried forward until you earn passive income or sell the property.

When you eventually dispose of the property in a fully taxable sale, all accumulated suspended losses are released and deductible at once. For long-term owners, that can be a sizable deduction in the year of sale.

The $25,000 Active Participation Allowance

If you actively participate in managing the rental, meaning you make decisions about tenant approval, lease terms, repairs, and similar management calls, you can deduct up to $25,000 in rental losses against non-passive income like your wages.³ You don’t have to handle day-to-day operations yourself. Hiring a property manager is fine as long as you keep decision-making authority. You also need at least a 10% ownership stake.

The $25,000 allowance phases out once adjusted gross income passes $100,000, shrinking by $1 for every $2 above that threshold, and disappears entirely at $150,000.³ Higher-income owners often find their rental losses trapped as suspended losses for years.

The Real Estate Professional Exception

A separate, stronger exception removes the passive classification entirely. If you qualify as a real estate professional, your rental losses can offset any type of income without limit. The requirements are steep: more than 750 hours during the year in real property trades or businesses in which you materially participate, and more than half of all your working hours must be in those real estate activities.³ On a joint return, only one spouse needs to satisfy both tests, but you can’t aggregate hours between spouses.

In practice, this exception is nearly impossible to meet if either spouse works full-time in a non-real-estate job. The IRS scrutinizes real estate professional claims closely, and contemporaneous time logs are essential to survive an audit.

What Happens When You Sell

Converting your home to a rental doesn’t automatically forfeit the capital gains exclusion that lets you exclude up to $250,000 of profit, or $500,000 for joint filers, on the sale of a primary residence.⁴ But it starts a countdown. You must have owned the home and used it as your primary residence for at least two of the five years before the sale. Once you’ve been out of the home for more than three years, you no longer meet the use test, and the exclusion is lost.

The Nonqualified Use Rule

For properties converted after 2008, any gain allocated to periods of “nonqualified use” cannot be excluded.⁴ This rule is more favorable than most people realize: the rental period that falls after your last day living in the home is not counted as nonqualified use.⁵ The nonqualified use proration mainly targets situations where you used the property for something other than your main home before living in it, like buying it as a rental, moving in for two years, and selling.

For the typical conversion (live in the home first, then rent it out), the nonqualified use rules usually don’t reduce your exclusion at all, as long as you sell within the five-year window. The IRS Publication 523 formula divides the number of post-2008 days the property was not your main home (excluding any period after you last lived there) by the total days you owned it, then multiplies that fraction by your total gain to find the nonexcludable portion.⁵

Depreciation Recapture

Even if you qualify for the full Section 121 exclusion, you cannot exclude the portion of your gain equal to the depreciation you claimed, or were allowed to claim, during the rental period.⁶ That recaptured amount is taxed at a maximum federal rate of 25%, regardless of your regular tax bracket. If you depreciated $50,000 over five years of rental use, that $50,000 is taxed at up to 25% when you sell, even if the rest of the gain is excluded.

The word “allowable” in the IRS rule matters. If you fail to claim depreciation during the rental years, the IRS still treats you as if you did. Skipping the deduction doesn’t reduce recapture. It just leaves money on the table.

Moving Back In Before Selling

Some owners move back into the property for at least two years before listing it, re-establishing the home as a primary residence to satisfy the use test. The strategy preserves the Section 121 exclusion, but it does not eliminate depreciation recapture for the rental years. If you’re near the edge of the five-year window, the timing has to be precise. Two years means 730 days, and the days do not need to be consecutive.

Deferring the Gain With a 1031 Exchange

Instead of selling and paying tax, you can defer the entire gain by exchanging into another investment property through a like-kind exchange. The replacement property must be real property held for business or investment use, identified within 45 days of transferring the relinquished property, and the exchange must close within 180 days.⁷

For converted residences, both tax benefits can combine: use the Section 121 exclusion to shelter up to $250,000 or $500,000 of gain tax-free, then defer the rest through a 1031 exchange. Revenue Procedure 2008-16 provides a safe harbor that spells out what qualifies a converted dwelling as property held for investment. You must own the property for at least 24 months before the exchange, rent it at fair market value for 14 or more days in each of the two 12-month periods before the exchange, and limit personal use to no more than the greater of 14 days or 10% of the rental days in each period.⁸

Combining the two requires careful sequencing. You need enough genuine rental use to satisfy the 1031 safe harbor while still falling within the five-year Section 121 window. Getting the timing wrong can cost one benefit or both.

If You Still Use the Property Personally

Occasional personal use of the converted property, whether a weekend visit, a holiday stay, or hosting family, can shift how the IRS classifies the rental. When personal use exceeds the greater of 14 days or 10% of the days the property is rented at fair market value, the property is reclassified as a “residence” rather than a pure rental.⁹ Once that happens, your rental expense deductions are capped at your rental income. You cannot use the rental to generate a deductible loss.

The IRS also applies a proration rule. When a property serves both personal and rental purposes, total expenses are divided between the two uses based on the number of days devoted to each.⁹ Mortgage interest and property taxes allocated to personal use shift to Schedule A as itemized deductions, subject to their own limits, while the rental-allocated portion goes on Schedule E.

One narrow exception: if you rent the property for fewer than 15 days in a year while also using it as a residence, you don’t report the rental income at all, and you can’t deduct any rental expenses.⁹ For a full conversion to rental use, this exception doesn’t apply. It’s only relevant if you’re splitting time between personal and rental use.

Forms, Estimated Taxes, and Records

Rental income and expenses are reported on Schedule E (Supplemental Income and Loss), which feeds your Form 1040.¹⁰ Your annual depreciation deduction is calculated on Form 4562 and carried to Schedule E.¹¹ If the rental produces a net loss, you will also need Form 8582 to determine how much of that loss is deductible under the passive activity rules.¹² Suspended losses are tracked on Form 8582 and carried forward.

Quarterly Estimated Payments

Rental income isn’t subject to withholding the way wages are, so you’ll likely need quarterly estimated payments to avoid an underpayment penalty. For 2026, the quarterly deadlines are April 15, June 15, September 15, and January 15, 2027.¹³ You can avoid penalties by paying at least 90% of your current-year tax liability, or 100% of your prior-year tax, through quarterly payments and withholding. If your AGI exceeded $150,000 in the prior year, the safe harbor rises to 110% of the prior-year tax. First-time landlords often miss this because they have always had taxes handled through payroll withholding. If you convert mid-year, start making estimated payments for the quarter in which rental income begins.

Records to Keep

Conversion creates documentation requirements that last for as long as you own the property and beyond. At a minimum, keep:

The appraisal or comparative market analysis dated the day of conversion, which anchors your depreciable basis and the dual-basis gain and loss rules.
Receipts for every capital improvement from both the personal-use and rental periods, since improvements increase your basis for gain calculations.
Move-in and move-out dates for yourself and every tenant, which drive the Section 121 use test, the nonqualified use calculation, and the personal use limits.
Contemporaneous time logs for hours spent on rental activities, needed for any claim of real estate professional status.
All receipts, invoices, and statements supporting deductions on Schedule E.

Keep these records for at least three years after filing the return for the year you sell the property, not three years after the year you incur the expense. In practice, holding them for the entire ownership period plus the statute of limitations is the safest approach.

1
Internal Revenue Service. Publication 527 – Residential Rental Property
2
Office of the Law Revision Counsel. 26 U.S. Code 168 – Accelerated Cost Recovery System
3
Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited
4
Office of the Law Revision Counsel. 26 U.S. Code 121 – Exclusion of Gain From Sale of Principal Residence
5
Internal Revenue Service. Publication 523 – Selling Your Home
6
Internal Revenue Service. Sales, Trades, Exchanges – Depreciation Recapture
7
Office of the Law Revision Counsel. 26 U.S. Code 1031 – Exchange of Real Property Held for Productive Use or Investment
8
Internal Revenue Service. Revenue Procedure 2008-16 – Dwelling Unit Exchange Safe Harbor
9
Internal Revenue Service. Renting Residential and Vacation Property
10
Internal Revenue Service. About Schedule E (Form 1040), Supplemental Income and Loss
11
Internal Revenue Service. 2025 Instructions for Schedule E (Form 1040)
12
Internal Revenue Service. Instructions for Form 8582
13
Taxpayer Advocate Service. Making Estimated Payments