Why a Health Savings Account (HSA) Is a Good Deal

If you're single, you can set aside up to $4,300 per year in pre-tax money for medical costs in an HSA. Families can contribute up to $8,550 per year. The downside is that your insurance plan will likely have less coverage because you'll need a high-deductible health plan to contribute to an HSA.

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How does an HSA work?

Health savings accounts (HSAs) allow you to put pretax money into a savings account and use that money for medical expenses, without ever paying income taxes on it.

You can only contribute to an HSA if you have a high-deductible health plan (HDHP). Funds in an HSA can earn interest and be invested so your HSA can grow if you don't spend the money. Employers can also contribute to HSAs on your behalf.

For example, let's say you're expecting medical bills totaling $3,000 in the coming year for prescriptions, medical tests or an expected expense like eye surgery or childbirth. You can pay these expenses using untaxed money you have in an HSA, as long as you had the account before you had to pay the expenses.

Money in an HSA can roll over from year to year. This can provide a rainy day fund for medical expenses, or it could be used as a retirement savings tool to pay for Medicare or other out-of-pocket costs.

Is an HSA worth it?

An HSA is worth it if you expect to have any health expenses, ever, an HSA allows you to pay them with pretax dollars.

Since almost everyone eventually faces health expenses, using an HSA to pay for them with pretax dollars can help your money go further.

HSAs offer several tax benefits:

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HSA pros and cons

What can you spend HSA funds on?

You can use money in an HSA to pay for doctor visits and dentist bills, prescription copays, eye exams, contacts and prescription glasses, and medical supplies from bandages to hearing aids.

The list of eligible expenses is long. It even includes expenses that may not be covered by health insurance at all, like laser eye surgery, guide dogs or fertility treatments.

While you usually can't use HSA funds to pay monthly bills for health insurance, there are important exceptions. You can use HSA money to pay your plan's monthly rate for:

How much can you save with an HSA?

The amount of money you could save on taxes is based on your income tax rate.

For a single person who puts the annual maximum of $4,300 into their HSA, the tax savings would typically be between $860 and $1,505 annually. A family could save almost $3,000 per year on income taxes if they contribute the maximum amount of $8,550 and have a tax rate of 35%.

HSA funds can roll over or be used as retirement savings

The money in a HSA is yours. You take your HSA money with you if you leave a job, and unused HSA money rolls over from year to year. That means if you have $500 in your HSA in December, you do not have to use it or lose it. Any unused funds do not count toward the maximum contribution in the new year, so you can build a nest egg to help pay for health care needs.

This makes HSAs more flexible than FSAs (flexible spending accounts) which are also used for medical expenses but have more restrictions.

Once you enroll in Medicare, you can no longer contribute to an HSA, but you can keep any leftover money. These funds can pay for medical costs as well as the cost of Medicare including Original Medicare (Part B), Medicare Advantage (Part C) or a Medicare prescription plan (Part D). Your spouse inherits your HSA if you designate them as the beneficiary.

Even though an HSA can be used as a way to save for retirement, the majority of account holders are spending at nearly the same rate they're contributing

Which health insurance plans are HSA-eligible?

You can only make contributions to an HSA if you are enrolled in what the IRS classifies as a high-deductible health plan (HDHP). For example, a high-deductible health plan for a single person must have a deductible of $1,650 or higher and an out-of-pocket maximum that's less than $8,300.

An HSA-eligible health insurance plan must:

Based on current IRS rules, an HSA-eligible insurance plan for a single person must have a deductible that's $1,650 or higher. Also, the plan's out-of-pocket maximum must be $8,300 or less for a single person — that's lower than the spending cap for some plans sold on HealthCare.gov, which can be up to $9,200.

High-deductible health plan (HDHP) limits

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Find out if your plan is HSA-eligible

If you aren’t sure if your health insurance qualifies you for an HSA, call the company and ask. If you get a plan through a federal or state exchange, the plan details should tell you if it qualifies for an HSA.

When choosing an HSA, look into any fees you will be charged as well as interest rates and investment options for the money you leave in an HSA.

It’s important to establish your HSA as soon as possible if you expect medical expenses — even if you don’t have the money to fund it right away. That’s because you can only use money in your HSA to pay for expenses that occur after the account was established. Make sure you fund the account while you still have an eligible plan. If you later switch to a plan that can't have an HSA, you can't add contributions for that year. However, you can use the funds that are already in the account for qualified expenses.

If you don't currently have a health insurance plan that's eligible for an HSA, you'll have to wait until your next enrollment period to change your coverage. This is usually each fall during open enrollment but you may be able to change your plan mid-year if you have a special circumstance like moving or a change in your family size.

Methodology and sources

Estimated annual tax savings are based on contributions up to the 2025 health savings account limits and the tax rates listed.