Medical expenses can take a serious toll on your finances, but the medical expense deduction offers a way to recover some of those costs at tax time. The catch is that not every dollar you spend on healthcare qualifies automatically. You can only deduct the portion of unreimbursed medical expenses that exceeds 7.5% of your adjusted gross income (AGI). For many taxpayers, that floor makes the deduction hard to reach, which is exactly why bunching medical expenses into a single tax year has become one of the most effective tax-planning strategies available.
Bunching is straightforward in concept. Instead of spreading controllable medical costs evenly across two or more years, you concentrate them into one year to push your total past the AGI threshold. The result is a larger itemized deduction and a lower tax bill. Below, we break down how the medical expense deduction works, which expenses qualify, and how to put a bunching strategy into practice.
How the medical expense deduction works
The IRS allows you to deduct qualifying medical and dental expenses that are not reimbursed by insurance or paid through a tax-advantaged account such as a Health Savings Account (HSA) or Flexible Spending Account (FSA). You can only deduct the amount that exceeds 7.5% of your AGI. The rules for what counts and how the floor is applied are spelled out in IRS Publication 502, the agency’s official guide to medical and dental expenses.
Understanding the 7.5% AGI floor
For example, if your AGI is $80,000, the floor is $6,000 (7.5% of $80,000). If your total qualifying medical expenses for the year are $8,000, you can deduct $2,000. If your expenses come in at $5,500, you get no deduction at all, even though you spent thousands on healthcare.
This threshold applies for both regular income tax and alternative minimum tax (AMT) purposes. It also applies regardless of your age. The lower 7.5% floor is now permanent after Congress made it so, removing the older split that once gave seniors a temporary lower rate.
Why itemizing matters
To claim the deduction, you must itemize on Schedule A rather than take the standard deduction. Because the standard deduction has increased significantly in recent years, fewer taxpayers itemize. That shift makes it even more important to bunch deductible expenses strategically when you do choose to itemize.
Which medical expenses qualify for a tax deduction
A wide range of out-of-pocket healthcare costs count toward the medical expense deduction. Qualifying expenses include doctor and dentist visits, prescription medications, eyeglasses and contact lenses, hearing aids, hospital stays, lab tests, X-rays, and mental health services. You can also deduct the cost of medical equipment like crutches or wheelchairs, as well as transportation to and from medical appointments.
Less obvious costs that may be deductible
Certain less obvious costs qualify too. Long-term care insurance premiums (up to age-based limits), medically necessary home improvements such as installing wheelchair ramps, and even some weight-loss programs prescribed by a doctor can be deductible. Health insurance premiums you pay with after-tax dollars, meaning premiums not already excluded from your paycheck on a pre-tax basis, may also count.
Expenses that do not qualify
Cosmetic procedures performed purely for appearance, over-the-counter vitamins and supplements (unless prescribed), and gym memberships generally do not qualify. Keeping detailed records and receipts throughout the year is critical, because the IRS may ask for documentation if you claim a large deduction.
What bunching medical expenses means and why it works
Bunching medical expenses is the practice of timing controllable healthcare spending so that as many costs as possible fall within a single tax year. Instead of paying for an elective procedure, new eyeglasses, and dental work across three separate calendar years, you schedule and pay for all of them within the same twelve-month period.
A simple example of bunching in action
The math behind bunching is simple. If your AGI is $100,000, you need more than $7,500 in unreimbursed medical expenses before you can deduct a single dollar. Spreading $10,000 in expenses across two years, $5,000 each, means you never clear the threshold in either year and get no deduction at all. Concentrating that same $10,000 into one year gives you a $2,500 deduction ($10,000 minus the $7,500 floor).
Which expenses you can control
Bunching works best when you have some control over when expenses occur. Controllable costs include elective dental procedures, orthodontics, LASIK or other vision correction surgery, hearing aids, prescription refills you can time at year-end, and non-urgent specialist visits. Costs that are truly urgent or emergency-related obviously cannot be delayed or accelerated, but a surprising number of medical expenses have flexible timing.
Step-by-step bunching strategy for tax deduction planning
Putting a bunching strategy into practice requires some planning, but the potential tax savings make it worthwhile. Start by estimating your AGI for the current year and calculating the 7.5% floor. Then add up all the medical expenses you have already incurred or expect to incur before year-end. A coordinated approach with tax advisory services can keep these projections accurate as your income changes.
Accelerate or defer based on your position
If you are close to exceeding the floor, accelerate any controllable expenses into the current year. Schedule that dental procedure, order new prescription eyeglasses, or stock up on a 90-day supply of maintenance medications before December 31. Every dollar above the threshold becomes a deduction.
If you are far from the floor with no realistic chance of exceeding it this year, consider deferring non-urgent expenses to the next year. The goal is to stack those costs alongside other planned spending in a year where you are more likely to cross the threshold.
Coordinate with your spouse and keep records
Coordinate with your spouse if you file jointly. Both spouses’ medical expenses combine on a joint return, so timing one spouse’s elective surgery in the same year as the other spouse’s dental work can push total expenses over the AGI floor more easily.
Finally, keep every receipt, explanation of benefits (EOB), and insurance statement organized by date. You will need this documentation both for your tax return and in the event of an IRS inquiry.
How bunching tax deductions works alongside other itemized deductions
The bunching strategy is not limited to medical expenses alone. Many taxpayers apply the same logic to charitable contributions, state and local tax payments, and other itemized deductions. The idea is to alternate between itemizing in one year, when you bunch multiple large deductions together, and taking the standard deduction in the off year.
Combining multiple deductions in a single year
For example, you might combine a large charitable gift, accelerated property tax payments, and bunched medical expenses all in the same tax year. That combination could push your total itemized deductions well above the standard deduction, maximizing your tax benefit. In the following year, with lower expenses, you simply take the standard deduction instead.
This approach is powerful given current standard deduction amounts. The IRS publishes the annual figures, and you can confirm the current-year thresholds for your filing status through the agency’s inflation adjustment announcements. You only benefit from itemizing when your total itemized deductions exceed the standard deduction for your filing status, which is why strategic timing matters so much.
When to consult a tax advisor
Working with a tax advisor can help you model different scenarios and decide which year offers the greatest tax savings. A CPA or enrolled agent can run projections based on your income, expected expenses, and filing status to identify the optimal bunching year. The broader accounting services a firm provides often connect this planning to your wider financial picture.
Common mistakes to avoid with the medical expense deduction
One of the most frequent errors taxpayers make is including expenses that were reimbursed by insurance. Only the unreimbursed portion of a medical bill counts toward the deduction. If your insurance covered 80% of a $5,000 procedure, only the $1,000 you paid out of pocket qualifies.
Another mistake is forgetting to account for HSA or FSA distributions. If you used pre-tax dollars from a health savings account or flexible spending account to pay a medical bill, you cannot also deduct that expense on Schedule A. The tax benefit was already captured through the tax-advantaged account.
Some taxpayers also overlook the requirement to itemize. You cannot claim the medical expense deduction if you take the standard deduction. Before assuming the medical deduction will save you money, compare your total itemized deductions against the standard deduction for your filing status.
Poor record-keeping sinks many deduction claims. The IRS expects you to substantiate every expense with receipts, invoices, or statements showing the date, amount, and nature of the service. Start a simple filing system, digital or paper, at the beginning of each year so you are prepared when tax season arrives.
Frequently Asked Questions
What is the AGI threshold for the medical expense deduction?
You can deduct unreimbursed medical expenses that exceed 7.5% of your adjusted gross income. This floor applies to all taxpayers regardless of age and covers both regular income tax and AMT calculations. Any qualified expenses below that percentage are not deductible.
What medical expenses qualify for a tax deduction?
Qualifying expenses include doctor visits, hospital stays, prescription drugs, dental work, eyeglasses, contact lenses, hearing aids, mental health services, and medically necessary equipment. Health insurance premiums paid with after-tax dollars and long-term care premiums (within limits) also qualify. Cosmetic procedures and over-the-counter supplements generally do not.
How does bunching medical expenses reduce your tax bill?
Bunching concentrates controllable healthcare costs into a single tax year so your total exceeds the 7.5% AGI floor. Instead of spreading expenses across multiple years and never reaching the threshold, you create one high-expense year where the excess amount becomes a deductible write-off on Schedule A.
Can you bunch medical expenses with other itemized deductions?
Yes. Many taxpayers combine bunched medical expenses with accelerated charitable contributions and other deductible costs in the same year. This can push total itemized deductions above the standard deduction, generating tax savings. In alternate years, they simply take the standard deduction.
Do HSA or FSA payments count toward the medical expense deduction?
No. Expenses paid with pre-tax dollars from a Health Savings Account or Flexible Spending Account cannot also be deducted on Schedule A. The tax benefit was already received when the funds went into the account tax-free. Only expenses paid with after-tax money qualify for the deduction.
Should you work with a tax advisor on a bunching strategy?
A tax advisor can model your income, expected medical costs, and other deductions to determine whether bunching will save you money in a given year. This is especially valuable if your income fluctuates, you have large planned procedures, or you are coordinating expenses between spouses on a joint return.
