Claiming home improvements on your taxes usually does not produce an immediate deduction, but the money is not lost for tax purposes. Qualifying upgrades add to your home’s cost basis and reduce the taxable gain when you sell, and a narrower set of projects — medical modifications, home office work for self-employed filers, and certain energy upgrades placed in service by the end of 2025 — can lower your tax bill in the year you do the work.
Repairs Versus Capital Improvements
Federal tax law draws a sharp line between the two. Fixing a leaky faucet, repainting a room, or patching drywall is maintenance and has no tax value on a personal residence. A capital improvement adds value to the property, extends its useful life, or adapts it to a new purpose. Installing a new roof, adding a bedroom, finishing a basement, or replacing every window in the house are textbook examples.1Internal Revenue Service. Tangible Property Final Regulations – Frequently Asked Questions
Only capital improvements get added to your basis. Routine repairs never qualify, even expensive ones, unless they are part of a larger renovation that itself qualifies. Improvements that are no longer part of the home (carpet you installed and later ripped out) drop off the calculation. Anything with a useful life under one year when installed is excluded.2Internal Revenue Service. Publication 523, Selling Your Home
Do-it-yourself work counts for the cost of materials, not the value of your own labor. The same rule applies to unpaid help from friends or family.2Internal Revenue Service. Publication 523, Selling Your Home
The Main Payoff: Cost Basis and the Sale
For most homeowners, this is where improvements pay off. Your basis is a running total of your investment in the property: original purchase price, certain closing costs, and every qualifying improvement you make over the years. When you sell, gain equals sale price minus basis. A higher basis means a smaller gain.
Under Section 121, you can exclude up to $250,000 of gain if you are single, or $500,000 if you are married filing jointly, as long as you owned and used the home as your primary residence for at least two of the five years before the sale.3Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence
Say you bought for $300,000, added $80,000 in qualifying improvements, and sold for $700,000. Your gain is $320,000 instead of $400,000. For a single filer, that difference could pull the gain within the $250,000 exclusion instead of leaving $150,000 exposed to tax.
When gain does exceed the exclusion, the taxable portion faces long-term capital gains rates. For 2026, the rate is 0% on taxable income up to $49,450 for single filers or $98,900 for married couples filing jointly. Above those thresholds, the rate is 15% until income reaches $545,500 (single) or $613,700 (joint), with 20% above that.4Internal Revenue Service. Revenue Procedure 2025-32 Higher earners can also owe the 3.8% net investment income tax on gain above the exclusion when modified adjusted gross income exceeds $200,000 (single) or $250,000 (joint). Those thresholds are not indexed for inflation.5Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
The basis adjustment does not show up on any return until the year of sale. That is why record-keeping matters years before it seems relevant.
Energy Credits: What Is Still Available
The two main residential energy credits both expired for property placed in service after December 31, 2025.6Internal Revenue Service. One, Big, Beautiful Bill Provisions If you are filing a 2025 return, they are still in play. If you are looking for a credit on 2026 work, the door is closed.
Energy Efficient Home Improvement Credit
The Section 25C credit covered 30% of the cost of qualifying upgrades like exterior doors, windows, skylights, heat pumps, and insulation, with an overall annual cap of $1,200 and a separate $2,000 limit for heat pumps and biomass stoves.7Office of the Law Revision Counsel. 26 USC 25C – Energy Efficient Home Improvement Credit The Inflation Reduction Act had extended it through 2032; the One Big Beautiful Bill Act terminated it early.6Internal Revenue Service. One, Big, Beautiful Bill Provisions
For a 2025 return, sub-limits still matter: $250 per exterior door up to $500 total, $600 for windows and skylights combined, and the $2,000 cap for heat pumps, heat pump water heaters, and biomass stoves or boilers.8Internal Revenue Service. Updates to Frequently Asked Questions About the Energy Efficient Home Improvement Credit and the Residential Clean Energy Property Credit The credit is nonrefundable and has no carryforward, so any amount over your tax liability is lost. Products must have been purchased from a qualified manufacturer registered with the IRS.9Internal Revenue Service. Energy Efficient Home Improvement Credit Qualified Manufacturer Requirements
Residential Clean Energy Credit
The Section 25D credit covered 30% of the cost of solar panels, solar water heaters, geothermal heat pumps, small wind turbines, fuel cells, and battery storage. There was no annual dollar cap (except for fuel cells), and unused credit carried forward.10Internal Revenue Service. Residential Clean Energy Credit Section 25D also expired for expenditures after December 31, 2025.11Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit
The carryforward is the piece worth remembering. If you installed a solar system in 2025 and the credit exceeded your 2025 tax liability, the excess carries to your 2026 return and still reduces what you owe. Both credits are claimed on Form 5695.12Internal Revenue Service. Instructions for Form 5695 (2025)
Medically Necessary Home Modifications
Home modifications that serve a genuine medical purpose for you, your spouse, or a dependent can be deducted as medical expenses in the year you pay for them. Common qualifying projects include entrance ramps, widened doorways and hallways, grab bars and railings, lowered kitchen cabinets, stairway modifications, and porch lifts.13Internal Revenue Service. Publication 502, Medical and Dental Expenses
How much you can deduct depends on whether the work increases the home’s market value. Accessibility modifications like those above are generally presumed not to add value and can be deducted in full. An improvement that does increase value, such as an elevator, is deductible only for the amount above the value it adds: a $20,000 elevator that raises the home’s value by $12,000 produces an $8,000 medical expense.14eCFR. 26 CFR 1.213-1 – Medical, Dental, Etc., Expenses Ongoing operating and maintenance costs of medically necessary equipment also qualify each year.13Internal Revenue Service. Publication 502, Medical and Dental Expenses
These are itemized deductions on Schedule A, and only the portion of total medical expenses above 7.5% of your adjusted gross income is deductible.15Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses A physician’s written recommendation explaining the medical necessity of the modification is essential; the IRS challenges these deductions and the paper trail carries the claim.
Home Office Improvements for the Self-Employed
Self-employed filers who use part of the home exclusively and regularly as their principal place of business can deduct home office costs, including improvements. A repair to the office space is a current-year expense. An improvement to the office is depreciated over 39 years as nonresidential real property.16Internal Revenue Service. Publication 946, How To Depreciate Property
Work that benefits only the office is fully deductible or depreciable. Improvements to the whole home — a new roof, a new HVAC system — are allocated by the office’s share of square footage. If your office is 15% of the house, 15% of the whole-house improvement flows through.
Report these on Form 8829, which feeds into Schedule C. Depreciation of improvements placed in service during the year also requires Form 4562.17Internal Revenue Service. 2025 Instructions for Form 8829 A common mistake is putting home office costs on Schedule A; for the self-employed, they belong on Schedule C.
W-2 employees who work from home cannot deduct home office expenses under current federal law. The unreimbursed employee business expense deduction was suspended by the Tax Cuts and Jobs Act for 2018 through 2025 and has been permanently eliminated starting in 2026.6Internal Revenue Service. One, Big, Beautiful Bill Provisions
Depreciation Recapture at Sale
Home office depreciation has a tax consequence most people overlook until they sell. Any depreciation you took (or should have taken) on the business portion of the home after May 6, 1997 is not covered by the Section 121 exclusion. That amount is taxed as unrecaptured Section 1250 gain at a maximum rate of 25%, regardless of your regular capital gains bracket.2Internal Revenue Service. Publication 523, Selling Your Home
Here is the trap: even if you skipped the depreciation deduction in a given year, the IRS treats it as though you took it. Your basis is reduced by the depreciation you were entitled to, not just what you actually claimed. Skipping it does not avoid recapture; it just forfeits the annual benefit without escaping the bill. Claim the depreciation when it is available.
Records to Keep
Good records decide whether a claim survives. Start with the closing statement from your purchase, which establishes original basis. For every improvement, keep the contractor invoice, itemized receipts splitting labor and materials, and any permits or inspection records. Photos of work in progress are not required but help if the IRS questions whether a project was really a capital improvement rather than a repair.
Energy credit claims filed on 2025 returns require the manufacturer’s certification statement confirming the product meets efficiency standards. You do not attach it to your return, but you must keep it.12Internal Revenue Service. Instructions for Form 5695 (2025) Medical improvement deductions need the physician’s written recommendation.
The IRS generally asks you to keep tax records for three years from the filing date.18Internal Revenue Service. How Long Should I Keep Records Records tied to your home’s cost basis should be kept for as long as you own the property and for three years after filing the return that reports the sale. The audit window stretches to six years when income is underreported by more than 25%, so keeping basis records longer than the standard three years is the safer choice.