Capital improvement or repair?
The distinction that decides whether work may add to your basis — with the gray areas named rather than glossed over.
7 min read · Last reviewed July 23, 2026
This is the question that decides whether work you paid for may count toward your home’s basis. It is also the question with the most confident wrong answers on the internet, usually because the confident answer skips the part where it depends.
The test
Broadly, work is a capital improvement if it adds to the value of your home, prolongs its useful life, or adapts it to new uses. A repair keeps the home in ordinary, efficient operating condition without doing those things (Publication 523).
Improvements may be added to basis. Repairs generally may not.
The easy cases
Usually improvements
- An addition — a room, a deck, a garage, a porch
- A new roof, replacing rather than patching
- A new heating or cooling system, or new ductwork
- A kitchen or bathroom remodel
- New windows, or insulation added where there was none
- Finishing a basement or an attic
- Landscaping that is permanent — a retaining wall, a driveway
- Rewiring, or replumbing
Usually repairs
- Patching a roof rather than replacing it
- Fixing a leak, or unblocking a drain
- Repainting, inside or out
- Replacing a broken window pane
- Servicing the boiler or furnace
- Replacing a handful of cracked tiles
“Usually” is doing real work in both headings — the sections below are the cases where these lists stop being reliable.
Walk it through
For anything not on those lists, four questions in order — two of which end honestly at “ask” rather than pretending the subject resolves neatly:
Did the work add value, prolong the home’s useful life, or adapt it to a new use?
- Yes — likely an improvementA new roof, an addition, a replaced system, a remodel. Carry on to the next question.
- No — likely a repairPatching, servicing, repainting. Generally not added to basis on its own — but check the next question before you decide.
Was it done as part of a larger remodel?
- Yes — ask your tax professionalWork that would be a repair alone can be treated as part of an improvement when it is part of an extensive remodel. The invoice will not say so; the context decides it.
- No — the first answer standsImprovement or repair, as above.
Is the work still part of the home today?
- Yes — it may still countThe 2019 kitchen is still the 2019 kitchen.
- No — it generally drops outAn improvement you have since replaced generally comes back out of basis. You do not carry both the old kitchen and the new one.
Did you receive a credit, rebate or insurance payment toward it?
- Yes — ask your tax professionalWhat you paid is not necessarily what counts. Credits and reimbursements generally reduce basis, so keep the paperwork for what came back as well as what went out.
- No — the amount is what you paidKeep the invoice and proof of payment.
Whichever branch you land on, log it.Two of the four questions above end at “ask your tax professional”, and that is the honest answer rather than a hedge. A record can be reconsidered later; a gap cannot.
Where it genuinely gets gray
Each of those branches deserves more than a single line:
Repairs done as part of a larger remodel
Work that would be a repair on its own can be treated as part of an improvement when it is done as part of an extensive remodel. Repainting a room is a repair; repainting it because you have just knocked a wall out and rebuilt it is part of the remodel. The context changes the answer, and the invoice usually will not say so.
This is exactly why we suggest logging repairs anyway rather than discarding them. A repair you did not record cannot later be reconsidered as part of a project; a repair you did record can.
Replacements versus repairs
Replacing an entire system or structure usually reads as an improvement. Fixing part of one usually reads as a repair. “Entire” does a lot of work in that sentence, and reasonable people disagree about where a partial roof replacement sits.
Improvements you later remove
An improvement that is no longer part of the home generally comes back out of your basis (Publication 530). Fit a kitchen in 2011, replace it in 2023, and you do not generally carry both. This catches people who have owned a home a long time and improved the same room twice.
Work with a credit or rebate attached
If you received an energy credit, a rebate or an insurance payment toward the work, the amount that counts is not simply what you wrote on the check. Credits and reimbursements generally reduce basis. Keep the paperwork for what you received as well as what you paid.
What to do about it
Log everything, categorized honestly, and let the categorization be revisited later. That is the position that survives being wrong: if you record a repair and it turns out to have been part of a qualifying project, the record is there. If you record nothing because you assumed it would not count, there is nothing to reconsider.
HomeBasisLedger labels each category with whether it generally adds to basis, keeps repairs in your running total as a spending history, and separates them out in the report your tax professional sees — so the judgment stays with the person qualified to make it.
Start with what basis is if this is the first you have heard of it.
HomeBasisLedger keeps records; it is not tax advice. What qualifies as an improvement, how your basis is calculated, and what you may owe are questions for you and your tax professional.
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