Free Guide to FSA and HSA Healthcare Savings Options

Understanding FSA and HSA: Two Different Types of Healthcare Savings Accounts

Flexible Spending Accounts (FSAs) and Health Savings Accounts (HSAs) are two separate programs that let people set aside money before taxes to pay for healthcare costs. While they serve similar purposes, they work differently and have different rules. Understanding the distinction is the first step toward figuring out which option might work for your situation.

An FSA is an account offered through your employer's benefits plan. Money goes into the account through payroll deductions, which means the money comes out of your paycheck before income taxes and Social Security taxes are calculated. This reduces your taxable income for the year. You can then use that money to pay for medical, dental, and vision expenses that your health insurance doesn't cover, or to cover cost-sharing amounts like deductibles and copayments. FSAs are sometimes called "use-it-or-lose-it" accounts because money left in the account at the end of the plan year generally cannot be carried over to the next year. However, employers can offer a grace period (up to 2.5 months into the next year) or let you carry over up to $610 per year (as of 2024) depending on their plan.

An HSA is a different type of savings account designed to work alongside a high-deductible health plan (HDHP). Unlike an FSA, an HSA is owned by you individually, not by your employer. You can open an HSA through your bank, insurance company, or employer. Money in an HSA rolls over from year to year—there is no "use-it-or-lose-it" rule. This makes HSAs a long-term savings tool. Additionally, HSAs have an investment feature: after you meet a certain balance threshold (often $1,000 to $2,500, depending on the provider), you can invest the money in stocks, bonds, or mutual funds to potentially grow your savings over time.

According to the Internal Revenue Service (IRS), in 2024, about 30 million Americans have HSAs, while millions more participate in FSAs through their employers. The number of HSA account holders has grown steadily over the past decade as more people choose high-deductible health plans. Both account types offer tax advantages, but the nature of those advantages differs. With an FSA, the tax break comes from reducing your current-year taxable income. With an HSA, you get a tax break when you contribute money, when the money grows through investment earnings, and when you withdraw it for medical expenses—a triple tax advantage that makes HSAs particularly powerful for long-term savers.

Practical Takeaway: Use this guide to learn whether an FSA or HSA—or both—might match your healthcare spending patterns and financial goals. The choice depends on factors like your employer's offerings, your health insurance type, and how much you typically spend on healthcare each year.

How FSA Contributions Work and What You Can Pay For

Contributing to an FSA happens during your employer's open enrollment period, which is usually once per year. You decide how much money to contribute for the upcoming plan year, and that amount is deducted from your paycheck in equal installments throughout the year. For 2024, the maximum FSA contribution limit is $3,200 per year. This means you can set aside up to $3,200 in pre-tax money to cover healthcare costs.

The key advantage of FSA contributions is the tax savings. If you contribute $2,000 to an FSA and your combined federal, state, and Social Security tax rate is around 25%, you save roughly $500 in taxes that year. That's money back in your pocket simply because you put healthcare spending into a pre-tax account instead of paying for it with after-tax dollars. For a family of four where both spouses have access to FSAs, the combined annual contribution limit is $6,400 (if both maximize their individual accounts), which can represent significant tax savings.

FSAs cover a wide range of healthcare and dependent care expenses. Medical expenses covered include copayments, coinsurance, deductibles, and prescription medications. Dental expenses like cleanings, fillings, root canals, and orthodontia are covered. Vision expenses including eye exams, glasses, contact lenses, and contact lens solution are covered. Additionally, FSAs cover over-the-counter items with a doctor's prescription, such as certain pain relievers, allergy medications, and cold remedies. Some less obvious items are also covered: prescription sunglasses, bandages, heating pads, crutches, and even certain medical equipment like blood pressure monitors or glucose meters.

One important rule: you can only contribute to an FSA if you are enrolled in a health insurance plan through your employer. You cannot contribute to an FSA if you have individual health insurance or no health insurance at all. Additionally, FSA funds can only be used while you are employed; once you leave your job, any remaining money in the account is forfeited. This is why the "use-it-or-lose-it" nature of FSAs is important to understand when deciding how much to contribute.

Calculating your FSA contribution requires estimating your healthcare expenses for the upcoming year. If you have predictable costs (such as regular prescriptions, annual dental cleanings, and vision exams), you can look at past healthcare statements to estimate total costs. A conservative approach is to contribute only the amount you are confident you will spend, leaving a small cushion for unexpected expenses. If your employer offers a grace period or carryover option, you can contribute a slightly higher amount since some money can roll over.

Practical Takeaway: Review your past year's healthcare receipts and insurance statements to estimate next year's costs, then contribute that amount during open enrollment. This prevents overcontributing (and losing money at year-end) while maximizing your tax savings.

How HSA Contributions Work and Long-Term Accumulation Benefits

HSA contributions work differently from FSA contributions. To open an HSA, you must be enrolled in a qualifying high-deductible health plan (HDHP). For 2024, an HDHP is defined as a plan with a minimum deductible of $1,600 for individual coverage or $3,200 for family coverage, and maximum out-of-pocket costs (including deductibles, copayments, and coinsurance) of $4,050 for individual coverage or $8,100 for family coverage. Not all health insurance plans meet these criteria, but many health insurers offer HDHPs as options during open enrollment.

Once you have an HDHP, you can contribute to an HSA. The maximum contribution limits for 2024 are $4,150 for individual coverage and $8,300 for family coverage. You can contribute as little or as much as you want, up to the limit. Contributions can come from your paycheck (through payroll deduction) or from your personal funds. If you contribute through payroll deduction, the money is pre-tax, just like an FSA. If you contribute from personal funds, you can deduct the contribution on your tax return. Either way, you receive a tax benefit on the contribution.

The major advantage of HSAs over FSAs is that money rolls over from year to year. There is no "use-it-or-lose-it" rule. This means an HSA can function as a long-term healthcare savings vehicle. For example, if you contribute $4,150 per year for 10 years and use only $20,000 of that amount for actual healthcare costs, you will have approximately $21,500 remaining in the account (not accounting for investment growth). This balance can continue to grow and be used for healthcare expenses at any point in the future, even in retirement.

HSAs also offer investment options that FSAs typically do not have. Once your HSA balance reaches a certain threshold (often $1,000 to $2,500, depending on your provider), you can invest the money in a selection of mutual funds, target-date funds, or other investment vehicles. This means your HSA balance can grow through investment returns, not just through contributions. Over a 20 or 30-year period, this investment growth can be substantial. A person who invests $4,150 annually in an HSA and achieves an average 7% annual return would have approximately $373,000 after 30 years, compared to $124,500 if the money simply sat in a savings account earning no returns.

Another advantage: HSAs are portable. If you change jobs, your HSA remains yours. You take the account and its balance