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What Is an HSA and How Does It Work

A Health Savings Account, or HSA, is a type of savings account designed specifically to help people pay for medical expenses. Unlike a regular savings account at a bank, an HSA has special tax advantages that can make healthcare costs less expensive over time. The account works by allowing you to set aside money before taxes are taken out of your paycheck, which means you keep more of your earnings.

According to the U.S. Department of Health and Human Services, as of 2024, there are over 33 million HSA accounts in the United States, showing how many people use these accounts as part of their healthcare planning. The money you put into an HSA can be used to pay for things like doctor visits, prescription medications, dental care, vision care, and medical equipment. Some examples of expenses you might cover include a $150 copay for a specialist visit, $45 for eyeglasses, or $200 for prescription insulin.

One important feature of an HSA is that the money you don't use in a given year stays in the account. It rolls over, and you can use it in future years. This is different from some other healthcare savings plans where you lose the money if you don't spend it. This rolling-over feature means an HSA can grow over time, similar to a retirement savings account.

To have an HSA, you generally need to be enrolled in what's called a high-deductible health plan, or HDHP. A deductible is the amount of money you have to pay out of your own pocket before your insurance company starts to help pay for care. High-deductible plans typically have lower monthly insurance premiums but higher deductibles than traditional insurance plans.

Practical Takeaway: Think of an HSA as a medical savings account with tax perks. The money you contribute reduces your taxable income, and you can withdraw it tax-free when you use it for medical expenses. Learning how this account type works is the first step toward understanding whether it might fit your healthcare financial situation.

Tax Advantages and Financial Benefits You Should Know About

The biggest advantage of an HSA comes from how it treats taxes. When you contribute money to an HSA through your employer, that money is deducted from your paycheck before income taxes are calculated. This means if you earn $50,000 per year and put $3,850 into an HSA (the 2024 individual contribution limit), your taxable income becomes $46,150. Depending on your tax bracket, this could save you between $578 and $1,155 in federal taxes alone, plus potentially state taxes.

The second tax advantage is that money withdrawn from an HSA to pay for medical expenses is not subject to income tax. So if you use $1,000 from your HSA to pay for a surgery, dental work, or medications, you don't owe taxes on that $1,000. This is different from using money from a regular savings account, where the interest you earned would be taxable.

A third benefit involves investment growth. Many HSAs allow you to invest the money in the account, similar to how you might invest in a retirement account. If you invest $3,000 in your HSA and it grows to $4,500 over five years, you can withdraw that full $4,500 tax-free when you use it for medical expenses. The $1,500 in growth is not taxed. This compounding effect means an HSA can become a powerful long-term savings tool.

To understand the real-world impact, consider this example: A 35-year-old person contributes $2,500 to an HSA each year for 30 years until retirement. If that money grows at an average rate of 5 percent per year, the account could contain approximately $200,000 by age 65. That money would be available to pay for healthcare costs in retirement, which the Centers for Medicare and Medicaid Services estimates could be substantial.

It's worth noting that HSAs have different tax treatment than Flexible Spending Accounts, or FSAs, which are another type of healthcare savings option. FSAs generally have a "use it or lose it" rule, meaning money left over at the end of the year may not carry forward. HSAs do not have this limitation.

Practical Takeaway: The tax savings from an HSA work in three ways: contributions reduce your income taxes, withdrawals for medical expenses are tax-free, and investment growth is tax-free. Understanding these three tax benefits helps you see why an HSA might lower your total healthcare costs compared to other savings methods.

Types of Medical Expenses You Can Cover With HSA Funds

An HSA can be used to pay for a wide range of healthcare and medical-related expenses. The Internal Revenue Service maintains a detailed list of what qualifies, and understanding this list helps you plan how to use your HSA money wisely. The most common uses include paying for doctor visits, both routine checkups and specialist appointments. If you pay a $200 copay to see a cardiologist or $100 for an annual physical, you can use HSA funds for these costs.

Prescription medications and over-the-counter drugs are also covered expenses. This includes everything from blood pressure medications to allergy pills. However, there are some limitations on over-the-counter items. For example, you can use HSA money to buy pain relievers like ibuprofen only if you have a prescription from a doctor. Without a prescription, over-the-counter pain relievers, cold medicines, and allergy medications do not qualify.

Dental and vision care are major expense categories covered by HSAs. This includes dental cleanings, fillings, root canals, and orthodontia. Vision expenses covered by HSAs include eye exams, glasses, contact lenses, and eye surgery. A person who wears glasses and gets new frames and lenses every two years might spend $600 to $1,000 on vision care alone. These costs can be paid with HSA funds.

Medical equipment and supplies represent another category of covered expenses. This includes items such as blood glucose monitors for diabetes management, blood pressure cuffs, hearing aids, wheelchairs, crutches, and orthopedic braces. If a person with arthritis spends $300 on a quality back brace, they can pay for it with HSA funds. Similarly, someone managing diabetes who spends $150 per month on testing supplies can cover these costs with their HSA.

Mental health services and therapy are covered expenses. If you pay $100 per session for counseling or therapy, whether in-person or telehealth, you can use HSA funds. This includes treatment for depression, anxiety, substance abuse, and other mental health conditions. The expansion of telehealth services means many people can now access mental health support from home.

Hospital stays, surgical procedures, and emergency room visits are major expenses typically covered by HSAs. These can represent significant out-of-pocket costs even with insurance. If you have a surgery that costs $5,000 after insurance, you can use your HSA to cover part or all of that cost. Other covered expenses include childbirth and maternity care, physical therapy, and treatments for chronic conditions like cancer or heart disease.

Practical Takeaway: Before you use HSA funds, confirm that your specific expense qualifies by checking the IRS guidelines or asking your HSA provider. Keeping receipts and understanding what you can cover helps you make the most of your HSA dollars and plan your healthcare spending strategically.

Eligibility Requirements and Different HSA Options Available

To open an HSA, certain basic requirements must be met. The primary requirement is that you must be enrolled in a high-deductible health plan, or HDHP. For 2024, the IRS defines an HDHP as a health insurance plan with a deductible of at least $1,600 for self-only coverage or $3,200 for family coverage. This means you pay these amounts out of your pocket for most healthcare services before your insurance starts to help pay. The maximum out-of-pocket spending limits for 2024 are $4,150 for individual coverage and $8,300 for family coverage.

You also cannot be covered by other health insurance that is not an HDHP, with some exceptions. For example, you might have a separate dental or vision plan without affecting HSA eligibility. Additionally, you generally cannot be enrolled in Medicare, and you cannot claim anyone else as a dependent on your tax return