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There is a tax question sitting underneath every home modification project, and most families never ask it because the work feels like building rather than medicine. The IRS’s own guidance treats it as both.
The rule
Publication 502 sets out the general principle for capital expenses: where the main purpose of an improvement is medical care for you, your spouse or a dependant, the cost counts as a medical expense, but the cost of the improvement is reduced by the increase in the value of your property. The difference is a medical expense.
So a project that adds value to the house is only partly deductible, and one that adds none can count in full.
The list that matters
Publication 502 names improvements that do not usually increase the value of the home, so their cost can be included in full as medical expenses:
- Constructing entrance or exit ramps for the home
- Widening doorways at entrances or exits
- Installing railings, support bars or other modifications to bathrooms
- Lowering or modifying kitchen cabinets and equipment
- Adding handrails or grab bars anywhere, whether or not in bathrooms
That list is close to a description of this entire website, which is the point: most of what makes a house workable for an older adult falls into the category the IRS treats as fully countable.
The two thresholds that decide whether it helps
You have to itemise. Medical expenses are an itemised deduction, so a household taking the standard deduction gets nothing from this.
The 7.5 percent floor. Only the part of total medical and dental expenses that exceeds 7.5 percent of adjusted gross income is deductible.
Those two together mean the deduction tends to matter in a year when several things coincide: a large modification, significant other medical costs, and a household that itemises anyway. Which is also an argument for grouping planned work into one tax year rather than spreading it across two.
Operating and maintenance costs of a medically necessary capital improvement can also count as medical expenses, and they continue for as long as the medical reason does, even in years when the original installation is long past. If a modification has ongoing running costs, keep those receipts too.
The records to keep
- The invoice, itemised, showing what was done and when it was paid.
- The medical reason, ideally a letter or prescription from the clinician or the occupational therapist’s assessment. Nobody asks for it until they ask for it.
- Evidence on value, where the work might have increased the home’s value. For the improvements on the list above that is usually not an issue; for something larger, an appraiser’s opinion is the usual way to establish the split.
- Proof of who paid, particularly where an adult child pays for work on a parent’s home. Who may claim what depends on dependency rules, and that is a question for a tax professional.
- Grant paperwork, because money from a grant is not money you paid.
Where this interacts with everything else
If a VA grant, a Medicaid waiver or a local programme paid for part of the work, that part is not your expense and does not go in. The deduction applies to what you actually paid.
Conversely, the deduction is often the only help available to a household whose income is too high for the means-tested programmes and whose insurer will not pay for building work. For those families, this and the household’s own savings are the entire funding picture, which makes the records above worth keeping properly from the first invoice.
And the standard caution, meant seriously: this page describes what the IRS publishes. Whether a particular expense is deductible on a particular return depends on facts this site cannot see, so use it to prepare the question for a tax professional rather than as the answer.
Related reading: How Much Does an OT Home Safety Assessment Cost? and The VA Grants Families Keep Missing.
Questions people ask
Are grab bars tax deductible?
IRS Publication 502 lists adding handrails or grab bars, anywhere in the home, among improvements that do not usually increase a home's value, so their full cost can be included as a medical expense when the main purpose is medical care. The usual itemising and 7.5 percent of AGI rules still apply.
How does the IRS treat a wheelchair ramp?
Constructing entrance or exit ramps appears on Publication 502's list of improvements that do not usually increase the value of the home, so the cost can be included in full as a medical expense, subject to the general rules for medical deductions.
What is the threshold for deducting medical expenses?
Only the portion of medical and dental expenses that exceeds 7.5 percent of adjusted gross income is deductible, and you must itemise rather than take the standard deduction.
Can I deduct a modification paid for by a grant?
No. The deduction applies to what you paid. If a VA grant, a Medicaid waiver or a local programme covered part of the cost, only your own share can be considered.
Where these figures come from
- Publication 502, Medical and Dental Expenses Internal Revenue Service · irs.gov
- Topic no. 502, Medical and dental expenses Internal Revenue Service · irs.gov
- Home Improvements and Structural Alterations (HISA) US Department of Veterans Affairs · prosthetics.va.gov
Figures last checked September 2026.
