The short answer is yes, you can write off medical expenses. But it comes with a big catch, and it’s why so many people miss out on this valuable tax break. Your ability to deduct anything at all hinges on two major IRS rules: you have to itemize your deductions, and your total medical costs for the year must be significant enough to cross a specific threshold.
The Two Hurdles to Deducting Medical Expenses
When clients ask if they can write off their medical bills, the answer is always a qualified "yes." It’s not as simple as subtracting your doctor bills from your income. To get this deduction, you have to play by the IRS's rules, which means clearing a specific threshold and choosing to itemize deductions instead of taking the standard deduction.
The biggest hurdle is the 7.5% of Adjusted Gross Income (AGI) rule. Think of it as a deductible on an insurance policy—you only get a benefit after you've paid a certain amount out of pocket. For example, if your AGI is $100,000, the first $7,500 you spend on medical care ($100,000 x 7.5%) is on you. It offers no tax benefit. Only the expenses above that $7,500 mark even have a chance of being deductible.
Do You Qualify? The Core Requirements
This deduction isn't automatic. It’s designed to provide tax relief for people whose healthcare costs are unusually high compared to their income. Before you even start gathering receipts, you need to see if you meet the basic qualifications.
To help clarify, here's a quick summary of the requirements.
Medical Expense Deduction at a Glance
| Requirement | What It Means | Example (AGI of $100,000) |
|---|---|---|
| Itemize Deductions | You must file Schedule A. If the standard deduction is higher than your itemized total, this won't help you. | If the standard deduction is $29,200 (married filing jointly), your total itemized deductions must exceed this to see a benefit. |
| Meet AGI Threshold | Only unreimbursed medical expenses exceeding 7.5% of your AGI can be deducted. | Your AGI is $100,000. Your threshold is $7,500. If you have $10,000 in expenses, only $2,500 is deductible. |
| Use Qualified Expenses | Costs must be for legitimate medical care (diagnosis, treatment, prevention of disease, etc.). | Doctor visits, prescription drugs, and dental work count. Cosmetic procedures generally do not. |
| No Double Dipping | You can't deduct expenses paid with pre-tax funds from an HSA/FSA or reimbursed by insurance. | If insurance reimbursed $4,000 of a $5,000 surgery, only the remaining $1,000 can be counted toward your total. |
As you can see, passing the test requires your expenses to be both high and of the right type.
This initial framework is your first checkpoint. If you've had a year with a major surgery, extensive dental work, or another significant health event, you might easily clear the 7.5% hurdle. If so, the next step is to dig into what specific costs count and how to tally them all up.
Understanding the 7.5% AGI Threshold
When it comes to writing off medical expenses, there's one rule that matters more than any other: the 7.5% Adjusted Gross Income (AGI) threshold. It’s the gatekeeper for this deduction.
Think of it like a deductible on an insurance policy. The IRS requires your qualifying medical expenses to "exceed" 7.5% of your AGI before you can deduct a single dollar. This is a surprisingly high bar, and it’s the main reason many people who pay a lot for healthcare never see a tax benefit from it.
Let's break down how this works with a real-world example.
How the AGI Threshold Plays Out
Imagine you’re a small business owner in San Diego with an AGI of $100,000 for the year. The first step is to figure out your personal threshold.
$100,000 (AGI) x 0.075 = $7,500
That $7,500 is your floor. It’s the amount of medical spending that provides no tax deduction at all. Only the expenses above this number start to count.
So, if you had $6,000 in unreimbursed medical bills, you're out of luck. You didn’t cross the $7,500 threshold, so you can’t deduct anything.
But what if a sudden surgery pushed your family's total medical costs to $20,000? The math looks very different:
- Total Medical Expenses: $20,000
- Your 7.5% AGI Threshold: -$7,500
- Your Deductible Amount: $12,500
In this situation, you get to add $12,500 to your itemized deductions on Schedule A, which in turn lowers your overall taxable income. If you're looking for a deeper dive on AGI, you can read our complete guide on Adjusted Gross Income.
How This Rule Shapes Your Tax Strategy
This threshold forces you to be strategic. It's not enough to simply have medical bills; they have to be significant when compared to your income. This is especially true for entrepreneurs and business owners trying to manage their finances, from payroll to QuickBooks bookkeeping. IRS rules, found in Publication 502, confirm that only unreimbursed costs over that 7.5% AGI floor are fair game.
More importantly, clearing this threshold is only the first step. You still have to decide whether to itemize or take the standard deduction.
The challenge is that your total itemized deductions—including medical expenses, state and local taxes (SALT), and mortgage interest—must be greater than the standard deduction to provide any benefit.
For the 2025 tax year, the standard deduction is $14,600 for single filers and $29,200 for those married filing jointly. In our example, even with a hefty $12,500 medical deduction, a married couple would need another $16,700 in other deductions just to make itemizing worthwhile. This high hurdle is exactly why most taxpayers don't end up itemizing each year.
What Counts as a Qualifying Medical Expense
So, can you write off that mountain of medical bills? The first question we always get is, "What does the IRS actually consider a medical expense?" This is where most people miss out, because the definition is surprisingly broad—it goes way beyond just your doctor's co-pay or a trip to the emergency room.
At its core, a qualifying medical expense is any money you spend for the diagnosis, cure, mitigation, treatment, or prevention of disease. The IRS also includes payments for treatments that affect any part or function of the body. If an expense ticks one of those boxes, it’s a strong candidate for your tax deduction.
This obviously covers the big stuff like surgeries and hospital stays, but it also opens the door to a whole host of other costs you might be paying without even thinking to track them.
Common but Overlooked Deductible Expenses
It’s easy to remember the major medical events. What’s harder is keeping track of the smaller, routine costs that really add up over a year. To get the biggest deduction you're entitled to, you need to look at the complete picture.
Here are some of the most common expenses people forget to include:
- Dental and Vision Care: This isn't just about major procedures. It includes everything from routine cleanings, fillings, and braces to your annual eye exam, contact lenses, and prescription glasses.
- Mental Health Services: Seeing a psychologist or psychiatrist for therapy and counseling absolutely counts. These costs are fully deductible as medical care.
- Prescription Medications: Any medication a doctor prescribes is on the list. Just remember, over-the-counter drugs usually don't qualify unless your doctor specifically prescribes them.
- Medical Equipment and Supplies: This category includes things your doctor might prescribe for home use, like crutches, blood sugar test kits, hearing aids, and other Durable Medical Equipment (DME).
These costs are the bedrock of most people’s medical deductions, but the list doesn't end here.
Digging Deeper for More Deductions
The IRS rules are full of less-obvious deductions that can give your total a significant boost. Think about it: The tax code allows deductions under Section 213 for a wide range of care, from therapy sessions and surgeries to age-based premiums for long-term care insurance.
It really pays to track every related cost, no matter how small it seems at the time.
Here's a crucial point for the self-employed: While most taxpayers have to itemize deductions on Schedule A to claim medical costs, business owners have a better option. You can deduct 100% of your health insurance premiums "above-the-line," which means you don't have to itemize at all. It's a huge advantage.
This special rule can make a real difference in take-home pay for entrepreneurs. We cover this in more detail in our guide on whether medical premiums are tax deductible.
Other often-missed deductions you should be aware of include:
- Travel Costs: You can deduct the cost of gas and oil for trips to your medical appointments. If you don't want to track receipts, you can use the standard medical mileage rate set by the IRS each year.
- Addiction Treatment: Payments for inpatient treatment at a therapeutic center for alcohol or drug addiction are considered medical expenses.
- Home Modifications: If you need to install a wheelchair ramp or modify a bathroom for medical reasons, those costs can often be included, though some specific rules apply to these capital expenses.
- Weight-Loss Programs: A general gym membership won't cut it. But if a doctor diagnoses you with a specific disease like obesity or hypertension and prescribes a weight-loss program, its cost becomes deductible.
Itemizing vs. Taking the Standard Deduction
So, you have a pile of medical bills and you're wondering if you can write them off. The answer isn't a simple yes or no—it all comes down to a fundamental choice you have to make every tax season: should you itemize your deductions or take the standard deduction?
You can only deduct medical expenses if you choose to itemize. This decision is the single most important factor, so let's break it down.
Think of it as two different paths to lowering your taxable income. The standard deduction is the simple, straightforward path—a fixed dollar amount the government gives you, no questions asked. Itemizing is the scenic route; it requires you to gather up all your individual deductible expenses and add them together. You only want to take that route if it leads to a bigger deduction than the simple path.
What Is the Standard Deduction?
The standard deduction is a flat amount that simplifies tax filing for the vast majority of Americans. The IRS sets the amount each year based on your filing status, age, and whether you're blind.
It’s important to know that the Tax Cuts and Jobs Act of 2017 dramatically increased the standard deduction. This was a game-changer, and it's the main reason far fewer people find it worthwhile to itemize today. For many, taking the standard deduction is just a better deal.
For your planning, here are the projected standard deduction amounts for 2026:
- Single: $15,700
- Married Filing Jointly: $31,400
- Head of Household: $23,550
The bottom line is simple: unless your total itemized deductions add up to more than these figures, you won’t save any money by itemizing.
This flowchart can help you see what kinds of costs might even make it into your itemized total in the first place.
As you can see, things like prescriptions, visits to healthcare professionals, and necessary medical equipment are the building blocks of your potential medical expense deduction.
Running the Numbers: A Clear Example
To figure out which path is right for you, you have to do the math. Let's walk through a realistic scenario for a married couple in 2026 with a $120,000 adjusted gross income (AGI) and some significant expenses.
First, we need to find out how much of their medical costs are actually deductible. Their total medical bills for the year came to $15,000.
- Calculate the AGI Threshold: $120,000 (AGI) x 7.5% = $9,000
- Calculate the Deductible Amount: $15,000 (Total Costs) – $9,000 (Threshold) = $6,000
Their deductible medical expense is $6,000. Now, we add that to their other itemized deductions for the year:
- State and Local Taxes (SALT): Capped at $10,000
- Mortgage Interest: $12,000
- Charitable Donations: $1,500
- Deductible Medical Expenses: $6,000
When we add all those up, their total itemized deductions come to $29,500.
Decision Point: The couple's total itemized deductions are $29,500. The standard deduction for married couples filing jointly in 2026 is projected to be $31,400.
In this case, taking the $31,400 standard deduction is the clear winner. It provides a larger deduction and a lower tax bill, even with what feels like a lot of medical and housing expenses. This is a perfect example of the situation millions of taxpayers find themselves in. You might have thousands in expenses that qualify to be deducted, but if they don't collectively beat your standard deduction, they don't actually provide a tax benefit.
For a deeper dive into this comparison, check out our guide on the standard deduction vs itemized deductions. It’s critical to run this calculation every year to make sure you're making the smartest choice for your bottom line.
Advanced Strategies for Maximizing Medical Deductions
Once you've got the basics down—the 7.5% AGI threshold and the need to itemize—you can start looking at the more powerful, and often overlooked, ways to lower your tax bill. This is where real tax planning comes into play.
It's about more than just collecting receipts. It’s about structuring your finances to take full advantage of every opportunity the tax code offers. These strategies are especially game-changing for business owners, those supporting aging parents, and anyone using tax-advantaged health accounts.
The Self-Employed Health Insurance Deduction
Here’s a huge one for entrepreneurs, freelancers, and small business owners. There's a special deduction that lets you completely sidestep the 7.5% AGI hurdle for your health insurance costs. If you're self-employed, you can typically deduct 100% of the health insurance premiums you pay for yourself, your spouse, and your dependents.
This isn’t an itemized deduction you list on Schedule A. It's what's known as an "above-the-line" deduction, which you take directly on your Form 1040. That means you get the benefit even if you take the standard deduction.
Think about the implications:
- If you take the standard deduction: You can still write off your health insurance premiums. It's a straight-up tax savings you wouldn't get otherwise.
- If you itemize: This is where it gets really good. You deduct your premiums "above the line," which lowers your AGI. A lower AGI makes it much easier to clear the 7.5% threshold for all your other medical expenses on Schedule A. It’s a win-win.
This is easily one of the most significant tax perks available to the self-employed, making that expensive health coverage a little more bearable.
Claiming Expenses for Dependents and Relatives
You might be surprised by whose medical bills can count toward your deduction. The IRS is pretty clear that you can deduct expenses you paid for a dependent, either when they got the medical care or when you paid for it.
But here’s a detail many people miss. You may also be able to deduct medical expenses for someone who would have qualified as your dependent, but didn't for one of two specific reasons:
- They earned more than the gross income limit for the year.
- They filed a joint tax return with their spouse.
This rule is a lifeline for adult children supporting their aging parents. If you provide more than half of a parent's total support for the year and pay their medical bills, you can include those costs in your own medical deduction. This is true even if you can't claim them as a dependent on your return.
When you start factoring in major costs like prescription medications or long-term care, this provision can make a massive difference in your ability to claim the deduction.
Using HSAs and FSAs Without Double-Dipping
Health Savings Accounts (HSAs) and Flexible Spending Accounts (FSAs) are fantastic tools. They let you pay for medical costs with tax-free money. But you have to be careful not to make a very common mistake: double-dipping.
You cannot take a tax deduction for an expense you paid for with money from your HSA or FSA. Think of it this way: that money is already tax-advantaged. You either contributed it pre-tax or already took a deduction for the contribution. Claiming another deduction for the same expense is like trying to use the same coupon twice. The IRS won't allow it.
Here’s the smart way to approach it:
- Use your HSA/FSA first: Pay for routine, smaller expenses like co-pays, prescriptions, and new glasses with these tax-free funds. That's what they're there for.
- Pay large expenses out-of-pocket: When a major medical event happens—one that could push you over the 7.5% AGI threshold—consider paying with post-tax money from your bank account.
This approach lets you save your out-of-pocket spending for when it matters most, potentially unlocking a valuable tax deduction. It seems most people get this right; a 2022 analysis found that an overwhelming 97% of money withdrawn from HSAs was used correctly for qualified medical expenses.
How to Claim and Document Your Deductions
You’ve tallied up your expenses and confirmed you’ve crossed the AGI threshold. Now comes the critical part: officially claiming the deduction and, more importantly, proving it.
When you claim a deduction, you’re essentially telling the IRS, "I'm entitled to this tax break." Their immediate, unspoken response is always, "Show me the proof." Think of yourself as building a case file. Every receipt and statement is a piece of evidence supporting your claim.
The Paper Trail Is Your Best Defense
If the IRS ever sends a letter asking questions, your records are your first and only line of defense. While you don't actually mail a shoebox full of receipts with your tax return, you absolutely must have them organized and ready if they ask.
Here’s the essential documentation you need to hold onto for at least three years after you file your return:
- Receipts and Invoices: Make sure you have itemized receipts from doctors, dentists, hospitals, labs, and any other healthcare provider.
- Explanation of Benefits (EOBs): These statements from your insurance company are gold. They clearly show what insurance covered and what you were responsible for paying out-of-pocket.
- Pharmacy Records: Keep the receipts for every prescription. A great tip is to ask your pharmacy for a year-end printout, which neatly summarizes everything.
- Mileage Logs: If you're deducting medical travel, you need a simple log. Just jot down the date, the purpose of the trip, and your starting and ending mileage.
Keeping these records organized by date and category—whether in a physical binder or a dedicated digital folder—makes all the difference. It turns a potential audit headache into a simple, confident response.
How to Claim the Deduction Step by Step
With your documentation in order, actually claiming the deduction is quite straightforward. The action happens on Schedule A (Form 1040), Itemized Deductions.
- Get Your Grand Total: Add up all your qualifying, unreimbursed medical expenses for the year. This is your gross total.
- Calculate Your AGI Floor: Look at your Form 1040 to find your Adjusted Gross Income (AGI). Multiply that number by 7.5% (or 0.075). This is your threshold.
- Find Your Deductible Amount: Subtract the AGI floor (Step 2) from your gross medical expenses (Step 1). If the result is a positive number, that’s your deduction. If it’s zero or negative, you can’t take the deduction this year.
- Enter on Schedule A: Report the final number from Step 3 on the "Medical and Dental Expenses" line of your Schedule A.
Key Takeaway: Remember, the amount you write on Schedule A isn't your total medical spending. It’s only the portion of your spending that goes above the 7.5% AGI floor. Getting this calculation right is one of the most important steps to an accurate tax return.
Frequently Asked Questions About Medical Deductions
When it comes to deducting medical expenses, a few questions pop up more than any others. Getting these right can make a huge difference on your tax return, so let's clear up some of the most common sticking points we see.
Can I Deduct Health Insurance Premiums?
This is a question we get all the time, and the answer comes down to how you pay for them. If your premiums are taken out of your paycheck with pre-tax dollars—which is how most employer-sponsored plans work—you can't deduct them again. You've already received the tax benefit.
However, if you pay for health insurance with post-tax money, those premiums are fair game. This includes what you pay for a private plan or your share of an employer's plan.
Self-employed people have a huge advantage here. They can often deduct 100% of their health insurance premiums right off their income, no itemizing required. It’s an "above-the-line" deduction that directly lowers your adjusted gross income (AGI).
What if I Paid for a Dependent's Medical Bills?
Absolutely. You can include any qualifying medical costs you paid for someone who is your dependent.
The rules are surprisingly flexible, too. You can often deduct expenses for a person who would have been your dependent if they hadn't earned too much money or filed a joint return. This is a common strategy for adult children supporting an aging parent, allowing them to deduct the medical bills they pay on their parent's behalf.
Can I Deduct Expenses for My Pet?
As much as we love them, the IRS doesn't see our pets as dependents, so routine vet visits and food are not deductible.
There is one major exception: service animals. If an animal is trained and required to help with a specific medical condition (like a guide dog for the visually impaired), its costs are treated as a medical expense. You can deduct the cost of buying, training, and maintaining the animal—including food and vet care—as part of your total medical expenses, subject to that 7.5% AGI threshold.
For medical expenses that become truly unmanageable, it might be worth exploring other financial relief options, such as whether medical bills can be discharged in bankruptcy.
Important Takeaway: While you can’t claim a beloved family pet, the costs associated with a legitimate service animal are treated as a qualifying medical expense by the IRS.
What About Over-the-Counter Medicines?
This is another gray area for many people. Generally, you can't deduct over-the-counter drugs, supplements, or vitamins you buy for general wellness.
The crucial distinction is whether the item treats a specific medical condition. Insulin, for example, is deductible even without a prescription. For any other over-the-counter item to qualify, you would need a doctor to specifically prescribe it for you.
Trying to piece together medical deductions can feel overwhelming, but you don't have to do it alone. The team at Allied Tax Advisors lives and breathes this stuff. We can help you figure out what qualifies, make sure your documents are in order, and build a tax plan that puts more money back in your pocket.
Contact us today to see how we can help you with your individual and business tax needs. Learn more at https://alliedtax.com.