A capital improvement is a permanent addition or upgrade that increases a property’s value, extends its useful life, or adapts it to a new use. A new roof, a kitchen remodel and a central air system are classic examples.
The distinction matters most for taxes and accounting. Repairs that keep a property in normal working order are generally deducted as expenses, while capital improvements are usually capitalized and recovered over time through depreciation.
How it works
The IRS generally treats spending as a capital improvement when it does one of three things:
- Betterment. Fixes a pre-existing defect, enlarges the property, or meaningfully increases its capacity or quality, such as adding a bedroom.
- Restoration. Replaces a major component or returns a deteriorated property to like-new condition, such as replacing the entire roof.
- Adaptation. Converts the property to a new use, such as turning a single-family home into a duplex.
Work that does none of these, like patching a leak, repainting between tenants or fixing a broken appliance, is usually a repair.
Example
A hypothetical landlord spends $300 to patch a section of shingles after a storm. That is a repair, deductible that year. Two years later, they spend $18,000 to tear off and replace the whole roof. That is a capital improvement, added to the building’s basis and depreciated over the 27.5-year recovery period for residential rental property.
Why it matters for landlords
Classifying spending correctly affects your tax bill, your net operating income and your records when you sell. Capital improvements are typically excluded from NOI, but they raise your basis, which can reduce taxable gain later. In some rent-regulated areas, documented capital improvements can also support certain rent adjustments, subject to local rules.
Tracking improvements separately from repairs is easier when your chart of accounts is set up for it. See our chart of accounts setup guide, and use TenantLoop accounting to tag each expense. Tax rules here have nuances, so confirm treatment with a CPA.
Related terms
Related questions.
Can I deduct a capital improvement in the year I pay for it?
Usually not in full. Capital improvements are generally added to the property's basis and depreciated over time, while ordinary repairs can typically be deducted in the year paid. Some safe harbor rules allow smaller items to be expensed, so ask a CPA.
Is replacing a broken window a repair or an improvement?
Replacing one broken window with a similar window is usually a repair. Replacing every window in the building with upgraded energy-efficient units is more likely a capital improvement.