Home improvements are generally not directly deductible in the year you pay for them — but that doesn’t mean they’re irrelevant to your taxes. Depending on what you improve and how you use your home, the same renovation can affect your home office deduction, your home’s cost basis (reducing capital gains when you sell), or qualify as a medical expense. Here’s exactly how home improvements interact with your taxes.
The Core Rule: Capital Improvements Increase Your Basis
A capital improvement — a project that adds value, extends the useful life, or adapts your home to a new use — increases your home’s cost basis. A higher basis means lower taxable gain when you eventually sell.
Example: You bought your home for $350,000 and spent $80,000 on a kitchen remodel and addition. Your adjusted basis is $430,000. When you sell for $600,000, your taxable gain is $170,000 — not $250,000. At a 15% long-term capital gains rate, tracking that improvement saves you $12,000 in taxes at the point of sale.
This makes keeping records for home improvements one of the highest-ROI recordkeeping habits for homeowners — even though it doesn’t help your taxes in the current year.
What Counts as a Capital Improvement (vs. a Repair)
The IRS distinguishes capital improvements (basis-increasing) from repairs and maintenance (not basis-increasing, and generally not deductible for personal residences).
Capital improvements include:
- Adding a room, garage, deck, or pool
- Kitchen or bathroom remodel
- New roof, windows, or HVAC system
- Finished basement
- Landscaping that permanently improves the property
- Accessibility improvements (ramps, widened doorways — may also qualify as a medical deduction)
- Installing a home security system
- New flooring throughout the home
Repairs that don’t increase basis:
- Fixing a leaky faucet
- Repainting rooms
- Replacing a broken window (not a full window replacement)
- Patching the roof (not replacing it entirely)
The Home Sale Exclusion: Why Basis Matters
When you sell your primary home, the first $250,000 of gain is excluded from tax (single filers) or $500,000 (married filing jointly), provided you’ve lived in the home for at least 2 of the last 5 years. Most homeowners with modest homes never pay capital gains on a sale.
But for homeowners in appreciated markets, tracking improvements becomes critical. If your home has gained $600,000 in value and you’re a single filer, the first $250,000 is excluded and the remaining $350,000 is taxable. Every dollar of improvement cost you’ve tracked reduces that taxable gain.
When Home Improvements Are Directly Deductible
1. Home Office: Direct vs. Indirect Improvements
If you have a qualifying home office, improvements that benefit your entire home are deducted as a percentage under the actual expense method. But improvements made only to your office space — painting the office, replacing flooring in the office, adding a dedicated office door — are deductible at 100% as direct office expenses in the year paid.
2. Medical Improvements: Potentially Deductible as a Medical Expense
Home improvements made for a medical reason — a wheelchair ramp, grab bars in the bathroom, widened doorways, a stair lift, or a pool prescribed for physical therapy — may be deductible as medical expenses. The deductible amount is the cost of the improvement minus any increase in the home’s fair market value the improvement creates.
If an accessibility improvement (like a wheelchair ramp) doesn’t increase the home’s fair market value — which is common for modifications that serve a specific need — the full cost is potentially deductible as a medical expense, subject to the 7.5% AGI threshold. See the medical deductions guide for more.
3. Energy Efficiency Credits
Certain home improvements qualify for the federal Energy Efficient Home Improvement Credit — a tax credit (not a deduction) of 30% of costs for qualifying items like heat pumps, insulation, energy-efficient windows and doors, and home energy audits. The credit is capped at $3,200 per year in total, with individual limits per category. This is separate from the basis rules entirely — it reduces your tax bill in the year of installation.
Keep All Your Records
Keep contractor invoices, permits, and paid receipts for every improvement — and store them for as long as you own the home plus at least three years after sale. At tax time when you sell, your real estate agent and accountant will ask for this documentation to calculate your basis and minimize your gain.
For a complete picture of home-related deductions available right now — mortgage interest, property taxes, home office, and home insurance — see the home deductions guide.