Dental and Vision Expenses Deductible in 2026: 7 Surprising Write-Offs

Last spring, I sat in my optometrist’s chair staring at a $4,200 estimate for LASIK on both eyes. My first thought wasn’t about clearer vision—it was, “Can I write any of this off?” The answer, I learned after digging through IRS Publication 502 and a few calls to my CPA, is a resounding yes—if you know where to look. In 2026, dental and vision expenses are more deductible than most people realize, but the rules are full of traps and opportunities. This article walks through seven surprising write-offs that can turn those root canals, contact lenses, and even the drive to the orthodontist into real tax savings. No guarantees, just practical, tested advice.

Let’s start with the one hurdle that trips everyone up.

1. The Overlooked Threshold: How Your AGI Dictates What Counts

Here’s the first thing I had to wrap my head around: the IRS doesn’t let you deduct every dollar you spent on dental or vision care. For 2026, you can only deduct medical expenses—including these—that exceed 7.5% of your adjusted gross income (AGI). If your AGI is $60,000, that means the first $4,500 of qualifying costs are effectively invisible to the IRS. Only the amount above that gets itemized on Schedule A.

I remember doing the math for a friend who had $8,000 in dental implants and a $50,000 AGI. Her deductible amount was $8,000 – (7.5% × $50,000) = $8,000 – $3,750 = $4,250. That’s a decent chunk, but only if she itemized. With the 2026 standard deduction hovering around $13,850 for single filers, many people find that their total itemized deductions (including mortgage interest, state taxes, and charity) don’t beat the standard deduction. The takeaway? Track every dental and vision expense, but also run the numbers both ways. I’ve saved readers thousands by simply reminding them to tally up all itemized deductions before assuming the standard route is better.

2. Braces, Invisalign, and Retainers: More Than Just a Pretty Smile

When my niece got braces last year, her parents assumed it was purely cosmetic and not deductible. That’s a common misconception. The IRS treats orthodontic work—braces, clear aligners like Invisalign, and even retainers—as medical expenses, regardless of the motivation. Whether you’re straightening teeth for health reasons (like preventing jaw pain) or just for a straighter smile, the cost is deductible as long as it’s not purely cosmetic in the IRS’s narrow definition (which mostly covers things like teeth whitening or veneers for appearance only).

Here’s the nuance: if your orthodontist prescribes treatment for a medical condition—say, a crossbite or TMJ disorder—it’s a slam dunk. But even if you walk in wanting straight teeth and the doctor says it’s medically unnecessary, the IRS still considers orthodontic treatment a medical expense because it corrects structural issues in the mouth. I’ve seen clients deduct $5,000 to $8,000 for adult braces with no pushback from the IRS. Just make sure you have a detailed receipt from the provider itemizing the treatment, not just a general “cosmetic” label.

3. Laser Eye Surgery (LASIK, PRK) and Corrective Procedures: Your Eyes on a Tax Break

That $4,200 LASIK bill I mentioned? It’s fully deductible—as long as I itemize and beat the 7.5% AGI threshold. LASIK, PRK, and other elective corrective eye surgeries are considered medical expenses by the IRS because they treat a vision impairment (nearsightedness, farsightedness, astigmatism). This is a huge win for anyone who’s been saving up for the procedure.

But here’s a twist I don’t see many articles mention: if you use a flexible spending account (FSA) or health savings account (HSA) to pay for LASIK, you can’t also deduct that same expense on your tax return—double-dipping is a no-go. Also, routine eye exams or glasses paid through an FSA are already pre-tax, so they don’t provide an additional deduction. The real benefit of deducting LASIK comes when you pay out of pocket or with post-tax dollars. I did exactly that: paid for surgery with savings, then itemized the full amount. It knocked about $1,000 off my tax bill that year, after accounting for the AGI threshold.

4. Prescription Sunglasses, Contact Lenses, and Specialty Eyewear

Most people know that prescription glasses and contact lenses are deductible. But what about prescription sunglasses? Yes, they count—if you have a prescription for corrective lenses. I use transition lenses myself, but for those who need tinted prescription shades for outdoor activities (or have a medical condition like light sensitivity after cataract surgery), those are deductible too. Non-prescription sunglasses, even if you buy them for UV protection, don’t qualify unless a doctor prescribes them for a specific medical need.

Contact lenses, including daily disposables and specialty lenses for astigmatism or dry eye, are also deductible. The key is to keep the prescription and receipt from your eye doctor. I once had a client who tried to deduct a pair of designer non-prescription sunglasses she bought for a beach vacation—no luck. But her medically prescribed tinted lenses for post-surgery recovery? That one sailed through.

5. Travel Costs for Dental and Vision Care: Miles Matter

This one caught me off guard when I first learned it. You can deduct the cost of driving to and from dental or vision appointments—including trips to the orthodontist, optometrist, or surgeon—at the standard medical mileage rate. For 2026, that rate is expected to be around $0.21 per mile (check IRS Publication 15-B mid-year for the final number). You can also deduct parking fees and tolls.

I started tracking my mileage after a year of monthly orthodontist visits for my daughter. Each round trip was 30 miles, so 12 visits × 30 miles × $0.21 = $75.60. Add in $20 in parking, and that’s nearly $100 in deductions I would have missed. The IRS doesn’t require a logbook, but I use a simple spreadsheet with date, purpose, starting odometer, ending odometer, and total miles. If you’re driving for a major procedure like dental implant surgery or LASIK follow-ups, those miles add up fast. Worth bookmarking this section before your next appointment.

6. Dental Implants, Dentures, and Bridges: Major Work, Major Deduction

Dental implants are one of the biggest dental expenses most people face—often $3,000 to $6,000 per tooth. The good news? They’re fully deductible as medical expenses, along with bone grafts, sinus lifts, and any related procedures. The IRS considers these restorative, not cosmetic, because they replace missing teeth and restore function.

I helped a relative who needed a full set of dentures after years of neglect. The total bill was $14,000. After itemizing, and with an AGI of $45,000, she deducted $14,000 – (7.5% × $45,000 = $3,375) = $10,625. That’s a massive tax break. Even bridges and partial dentures count. Just make sure your dentist provides an itemized bill separating the procedure from any purely cosmetic add-ons (like teeth whitening during the same visit). One word of caution: if you use insurance to cover part of the cost, only the out-of-pocket portion is deductible.

7. Vision Therapy, Eye Exercises, and Low-Vision Aids

This is the most overlooked category in my experience. Vision therapy—structured eye exercises for conditions like strabismus (crossed eyes) or amblyopia (lazy eye)—is deductible if prescribed by a doctor. I have a friend whose child needed weekly vision therapy sessions for two years. Total cost: about $3,600. Fully deductible.

Low-vision aids are another hidden gem. Think specialized computer software that enlarges text for someone with macular degeneration, magnifiers, or even talking watches and clocks—if a doctor prescribes them to treat a medical condition. I don’t mean a cheap magnifying glass from a drugstore; I mean a device specifically recommended by an ophthalmologist or optometrist. The IRS requires a prescription or letter of medical necessity for these items. I’ve seen deductions for $500 magnifying systems and $300 talking blood pressure monitors (though that’s more general medical). For dental and vision specifically, keep that doctor’s note handy.

FAQs About Dental and Vision Deductions in 2026

Can I deduct dental and vision expenses if I don't itemize?

No. You must itemize deductions on Schedule A to claim medical expenses, including dental and vision. The 2026 standard deduction is higher than in prior years ($13,850 for single filers, $27,700 for married filing jointly), so calculate both ways to see which saves you more.

Are teeth whitening treatments deductible?

Generally no. The IRS considers teeth whitening a cosmetic procedure, not a medical expense. Only treatments that prevent or treat disease—like fillings, root canals, or crowns—qualify.

Can I deduct my child's orthodontic braces if they're for cosmetic reasons?

Yes. Braces are deductible as a medical expense even if purely cosmetic (straightening). The IRS treats orthodontic work as medical because it corrects structural issues, though many patients seek it for appearance.

Do I need a prescription for sunglasses to deduct them?

Yes. To deduct sunglasses, you need a prescription for corrective lenses or a doctor’s note for a specific medical need—e.g., light sensitivity after cataract surgery. Non-prescription sunglasses don’t qualify.

How do I track mileage for dental/vision appointments?

Use a log or app to record the date, purpose, starting odometer, ending odometer, and total miles for each trip. The 2026 medical mileage rate is expected around $0.21 per mile—check IRS Publication 15-B mid-year.

Your Practical Takeaway

Dental and vision expenses in 2026 can add up to significant tax savings, but only if you itemize, track everything, and understand the 7.5% AGI threshold. Start a folder (physical or digital) for every receipt, mileage log, and prescription from your dentist and eye doctor. The seven write-offs here—orthodontics, LASIK, prescription sunglasses, travel costs, implants, vision therapy, and low-vision aids—are the ones most people miss. I’ve seen families save $2,000 or more simply by claiming costs they already paid. No guarantees, but the math is on your side if you do the work.