Service Animal Tax Deduction: Qualifying Costs and AGI Floor

A service animal tax deduction is available under federal law when the animal is trained to mitigate a diagnosed physical or mental disability. You can deduct the costs of buying, training, and maintaining the animal as medical expenses, but only the portion of your total medical spending that exceeds 7.5% of your adjusted gross income counts, and only if you itemize on Schedule A instead of taking the standard deduction.¹

Which Animals Qualify

IRS Publication 502 allows deductions for “a guide dog or other service animal to assist a visually impaired or hearing disabled person or a person with other physical disabilities.”¹ The tax code defines medical care as amounts paid to diagnose, cure, mitigate, treat, or prevent disease, or to affect a structure or function of the body.² A service animal fits when it performs trained tasks that directly mitigate a diagnosed condition.

Psychiatric service dogs can qualify. The IRS has recognized examples that include reminding someone with a mental illness to take prescribed medications and calming a person with PTSD during an anxiety attack.³ An animal that simply provides companionship or general emotional comfort, with no trained task tied to a specific diagnosis, does not meet the standard. The connection between what the animal is trained to do and a documented medical need is the whole test.

You can deduct these costs for yourself, your spouse, or a dependent listed on your return.¹

Which Costs You Can Deduct

Publication 502 permits deductions for “the costs of buying, training, and maintaining” a qualifying service animal.¹ That covers more than most people expect.

Purchase and Training

The full purchase price of a professionally trained service animal is deductible in the year you pay it. Training fees are also deductible, whether you pay an accredited program up front or hire a professional trainer later for task-specific work. If a nonprofit placed the animal with you at no charge, there is no purchase price to deduct, but the ongoing costs still qualify.

Food, Vet Care, and Grooming

Publication 502 includes “food, grooming, and veterinary care, incurred in maintaining the health and vitality of the service animal so that it may perform its duties.”¹ In practice:

Food for the animal throughout the year.
Vet visits, vaccinations, emergency care, and prescription medications.
Grooming that keeps the animal healthy and able to work. Purely decorative grooming does not count.

Working Equipment

The tax code allows deductions for “equipment, supplies, and diagnostic devices” used for medical purposes.² Harnesses, service vests, and specialized leashes fall into this category because they enable the animal to do its job. Toys and non-working gear do not. If the item helps the animal work, it is likely deductible.

Travel

Trips made primarily for the animal’s veterinary care or training count as deductible medical transportation. For 2026, the IRS standard mileage rate for medical travel is 20.5 cents per mile.⁴ Log the date, destination, purpose, and miles for each trip. If you travel out of town for specialized training not available locally, lodging is deductible up to $50 per night per person, and up to $100 per night when a companion must travel with you because of your disability.¹ Meals during travel are not deductible.

Home Modifications

Permanent changes to your home to accommodate a service animal can qualify as deductible capital medical expenses when their main purpose is medical care. Adding a ramp the animal uses or fencing an exercise area are examples. There is a catch: if the improvement raises your property value, only the cost above that increase is deductible. Spend $4,000 on a modification that adds $1,500 to your home’s value, and $2,500 is deductible. Many disability-related modifications are presumed by the IRS not to increase home value, so the full cost qualifies.¹

How the 7.5% AGI Floor Works

Section 213 only lets you deduct medical expenses that exceed 7.5% of your adjusted gross income.² Everything below that threshold produces no tax benefit.

An example. Your AGI is $60,000 and you spent $8,000 on service animal costs plus $4,000 on other medical bills, for $12,000 total. The floor is $4,500 (7.5% of $60,000), leaving $7,500 deductible. If your AGI were $120,000 with the same $12,000 in expenses, the floor would be $9,000 and only $3,000 would be deductible. Higher income, higher floor, smaller deduction.

Bundling helps. If you know you will be acquiring a service animal and also facing substantial vet costs, paying for both in the same calendar year pushes your total further past the floor. Splitting them across two years can leave neither year over the threshold.

Standard Deduction vs. Itemizing

Medical expenses only produce a tax benefit if you itemize on Schedule A, and itemizing only makes sense when your total itemized deductions beat the standard deduction.⁵ For 2026, the standard deduction is:⁶

Single: $16,100
Married filing jointly: $32,200
Married filing separately: $16,100
Head of household: $24,150

This is where many service animal owners hit a wall. Say you are single with an AGI of $50,000 and $8,000 in qualifying medical costs. The floor takes $3,750, leaving a $4,250 medical deduction. Unless your other itemizable expenses such as state and local taxes, mortgage interest, and charitable gifts push the total past $16,100, you are better off with the standard deduction and the animal’s costs give you nothing on your return. The $32,200 bar for joint filers is even harder to clear. The year you actually buy a trained service dog is often the only year the numbers work.

When Itemizing Doesn’t Work: HSAs and FSAs

If itemizing does not pay off in your situation, a Health Savings Account or Flexible Spending Account can still cover service animal costs. Expenses that qualify as medical care under Publication 502 are generally eligible for reimbursement through an HSA, FSA, or Health Reimbursement Arrangement, typically with a letter of medical necessity from your provider. Because contributions go in pre-tax, you save on income tax and payroll tax without needing to clear the 7.5% floor or itemize. For most taxpayers whose itemized totals fall short of the standard deduction, this is the more useful route.

Subtract Any Reimbursements

Any expense that gets reimbursed by insurance or another source cannot also be deducted. Publication 502 requires you to “reduce your total medical expenses for the year by all reimbursements for medical expenses that you receive from insurance or other sources during the year.”¹ If a disability organization pays part of your training cost, or insurance covers a vet bill, subtract those amounts before doing your deduction math. Only what you actually paid out of pocket counts.

Records to Keep

You do not submit proof with your return, but you need it if the IRS asks. Publication 502 tells taxpayers to keep records supporting the deduction.¹ For a service animal, that means:

A letter from your doctor or licensed provider explaining your diagnosis and how the animal mitigates it. Publication 502 does not list this as a formal requirement, but it is the strongest piece of evidence if the IRS questions whether the animal qualifies, and HSA and FSA administrators generally require one before reimbursing.
The purchase contract or invoice from the training organization, plus receipts for any follow-up training.
A running log of food, vet, grooming, and equipment costs with receipts attached.
A mileage log with date, destination, purpose, and miles for each service-animal-related trip.

You report the deductible amount on Schedule A of Form 1040 after applying the 7.5% AGI calculation.⁷ Keep supporting documents at least three years from the date you filed or two years from the date you paid the tax, whichever is later.⁸

1
Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
2
Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses
3
Internal Revenue Service. Fact Sheet – Service Animals for Taxpayers With Disabilities
4
Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents
5
Internal Revenue Service. About Schedule A (Form 1040), Itemized Deductions
6
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
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Internal Revenue Service. 2025 Instructions for Schedule A (Form 1040)
8
Internal Revenue Service. How Long Should I Keep Records