What a health spending account actually is

A health spending account is a way to set aside money from your paycheck before taxes are taken out, then use that money to pay for medical expenses. Your employer holds the account, deducts the amount you choose from your pay over the year, and you withdraw from it when you have a medical bill. Because the money comes out before income tax and payroll taxes are calculated, you pay less in taxes overall — that's the real benefit.

The most common type is called a Flexible Spending Account (FSA), which is offered by many employers. Some employers offer a Health Reimbursement Arrangement (HRA) instead, which works slightly differently. A few employers offer both. The key difference: with an FSA, the money is yours to set aside; with an HRA, your employer funds it and sets the rules for what you can use it on.

These accounts are separate from your health insurance plan, though they work alongside it. You can have a health spending account even if you have a high-deductible health plan, and in fact they're often paired together.

Key Takeaways

  • A health spending account lets you set aside pre-tax money from your paycheck to pay for medical, dental, and vision expenses that your insurance doesn't cover or that you owe out of pocket.
  • With an FSA, you choose how much to set aside each year (usually between $100 and $3,200), and that money is available when ready once you enroll.
  • Money you don't use by the end of the year is forfeited — you cannot carry it forward, though some employers offer a short grace period or a small carryover amount.
  • You pay for the expense first, then submit a receipt to your account administrator to be reimbursed, or you use a debit card linked to the account if your employer provides one.
  • may be able to access expenses include copays, deductibles, prescription medications, dental work, glasses, and hearing aids, but not health insurance premiums or over-the-counter medications without a prescription.

How much you can set aside and when you decide

Each year, usually in November or December, your employer holds an open enrollment period where you can choose to start or change a health spending account. You decide how much money to set aside for the coming year — this is called your election amount. For 2024, the maximum you can set aside in an FSA is $3,200, though your employer may set a lower limit.

The amount you choose is deducted from your paycheck in equal installments throughout the year. If you elect $1,200, that's roughly $100 per paycheck if you're paid monthly. The money is available to you when ready once enrollment closes, even though it hasn't all been deducted yet — that's why you can use it right away.

You can only change your election if something major happens: you get married, have a baby, lose other health coverage, or have a significant change in medical expenses. You cannot straightforward decide mid-year that you want to set aside more or less money because you changed your mind.

What expenses you can actually pay for

Health spending accounts cover a long list of medical, dental, and vision expenses, but the rules are specific. You can use the money for copays, coinsurance (the percentage you owe after insurance pays), deductibles, prescription medications, dental cleanings and fillings, eyeglasses, contact lenses, hearing aids, and physical therapy. You can also use it for some less obvious things: acupuncture, chiropractic care, and prescription sunscreen.

What you cannot use it for: health insurance premiums (with a few exceptions for COBRA or retiree coverage), over-the-counter medications like ibuprofen or cold medicine unless you have a prescription, cosmetic procedures, gym memberships, vitamins, and toiletries. The IRS publishes a full list, and your account administrator can tell you whether a specific expense qualifies.

If you're not sure whether something is covered, ask your account administrator before you pay for it. Some expenses sit in a gray area, and it's easier to get clarification upfront than to submit a receipt and have it rejected.

How you actually get reimbursed

There are two ways to access your money, depending on what your employer offers. Some employers give you a debit card linked to your account. You swipe it at the pharmacy, doctor's office, or dental clinic, and the money comes straight out of your health spending account. This is the simplest method because there's no paperwork.

If your employer doesn't provide a debit card, you pay for the expense yourself and then submit a reimbursement request. You gather the receipt (which must show what was purchased and how much you paid), fill out a form or use your account administrator's website, and send it in. The administrator reviews it, confirms it's an may be able to access expense, and deposits the money back into your bank account — usually within one to two weeks.

Keep all your receipts. Even if you use the debit card, the administrator may ask for proof of the expense later. If you cannot produce a receipt, you may have to repay the money out of pocket.

The "use it or lose it" rule and what happens to leftover money

This is the biggest catch: money you don't use by the end of the year is forfeited. If you set aside $2,000 and only spend $1,500, the remaining $500 disappears. You cannot roll it over to next year, and you cannot get it back as a refund. This is why choosing the right amount to set aside matters — you want to estimate your medical expenses as accurately as you can.

Some employers offer a grace period, which gives you an extra 2.5 months into the next year to use the previous year's money. Not all employers offer this, so check your plan documents. A few employers also allow a small carryover — usually $500 or $550 — but this is less common.

To avoid losing money, think about what you actually spent on medical, dental, and vision care last year. Include copays, prescriptions, and any out-of-pocket costs. Be conservative: it's better to set aside less and not use it all than to set aside too much and lose money.

How a health spending account saves you money in taxes

The tax savings come from the fact that the money is deducted before income tax and payroll taxes (Social Security and Medicare) are calculated. If you set aside $2,000 and you're in the 22% federal income tax bracket plus 7.65% payroll tax, you save roughly $590 in taxes on that $2,000. That's real money back in your pocket.

The savings are smaller if you're in a lower tax bracket, and larger if you're in a higher one. But even a modest tax savings makes sense if you know you'll use the money anyway — which is why these accounts work best for people who have predictable medical expenses like regular prescriptions, dental work, or vision care.

The tradeoff is the risk of losing unused money. If you set aside $3,000 and only use $1,500, you lose $1,500 — which wipes out any tax savings. This is why the account only makes sense if you're confident about your medical spending.

Health Reimbursement Arrangements (HRAs) — a different structure

Some employers offer an HRA instead of or alongside an FSA. The main difference: your employer funds the account, not you. They decide how much to put in each year — maybe $1,000 or $2,500 — and you use it for may be able to access medical expenses. You don't choose the amount; your employer does.

HRAs also have different rules about leftover money. Some HRAs let you carry unused funds forward to the next year, which removes the "use it or lose it" pressure. Others work like FSAs and forfeit the money. Your employer's plan document will spell out which applies to you.

HRAs are less common than FSAs, but they're becoming more popular because they're more flexible for employers. If your employer offers one, ask whether unused money carries over and what expenses are covered.

Frequently Asked Questions

Can I use my health spending account to pay my health insurance premium?

Not usually. You cannot use an FSA to pay your regular health insurance premium. However, if you're on COBRA (continuing coverage after you leave a job) or you're retired and paying for retiree health coverage, you can use the account for those premiums. Ask your account administrator whether your specific situation qualifies.

What happens to my health spending account if I leave my job?

Your account closes when you leave. You have until the end of the year to submit receipts for expenses you already paid, but you cannot set aside new money or use the account after your employment ends. If you have unused money, it's forfeited. This is another reason to be conservative with your election amount.

Can I have a health spending account if I'm self-employed?

No. Health spending accounts are only available through an employer. If you're self-employed, you can deduct medical expenses on your tax return, but you cannot use an FSA or HRA. Some self-employed people use a Health Savings Account (HSA) instead, which has different rules and is paired with a high-deductible health plan.

Do I have to use the debit card at the point of sale, or can I pay cash and get reimbursed?

You can do either. If your employer provides a debit card, you can use it directly. If you don't have a card or prefer to pay out of pocket, you can submit a reimbursement request with your receipt. Both methods pull from the same account balance.

What if I estimate wrong and set aside too much money?

You lose it. This is the main risk of health spending accounts. To avoid this, look at your actual medical spending from the past year — copays, prescriptions, dental visits, glasses — and set aside roughly that amount. If you're unsure, set aside less rather than more. Some employers offer a grace period that gives you extra time to spend the money, so ask whether yours does.