Ask the 'Stache (1/24/26)

We call this the "Furry Dependent Deduction." It sounds logical — if a doctor prescribes pills, they are deductible. If a doctor prescribes a cat, shouldn't the cat be deductible too?

The short answer? Probably not.

The IRS draws a very strict line in the sand (or litter) between service animals and emotional support animals (ESAs).

• Emotional Support Animals: Generally not tax-deductible. Even with a psychiatrist's note, if the animal provides comfort just by being there, the IRS considers it a pet. Pet expenses are considered personal expenses, which are strictly non-deductible.

• Service Animals: Yes, deductible. These are animals trained to do a specific job for a specific disability.

The "Service Animal" Loophole (The Golden Ticket)

You asked about the rules for "support services" animals. In tax speak, this means a service animal. To write off Fluffy’s kibble, your situation generally needs to meet these criteria:

• The "Trained Task" Rule: The animal must be certified and trained to perform a specific medical task to help with a disability.

  • Example: A dog trained to sense an oncoming seizure or guide a visually impaired person.

  • Bad Example: A cat that makes you feel calmer just by purring. (We agree it works, but the IRS doesn't care).

• The Paper Trail: You need a diagnosis from a doctor (which you have!) and proof that the animal is trained to mitigate that condition.

Note on Species: While the ADA generally limits "service animals" to dogs (and sometimes miniature horses), the IRS is slightly vaguer, mentioning "other animals." However, since cats are rarely "trained" to perform medical tasks (unless knocking over water glasses helps your anxiety), they almost never qualify.

The Math Problem (The 7.5 Percent Hurdle)

Even if you did have a trained service dog, deducting the cost isn't automatic.

• Medical Expense Threshold: You can only deduct medical expenses that exceed 7.5 percent of your adjusted gross income (AGI).

• Itemizing: You have to itemize your deductions (Schedule A) instead of taking the standard deduction. Since the standard deduction is so high ($15,750 for singles in 2025), you'd need a lot of vet bills to make this worth it.

What about State Taxes?

State rules generally follow the federal rules. If the IRS says "no," your state likely says "no," too. However, a few states have unique medical deduction thresholds (some lower than 7.5 percent), so if you do have a qualified service animal, checking your specific state's medical expense rules is worth a Google.

Bottom line: Unless your cat has a degree from a specialized training school, you likely cannot deduct the expenses. The IRS views your psychiatrist's note as a valid medical recommendation, but the costs are still considered personal unless the animal is a working medical tool.