What Is a Flexible Spending Account (FSA)? How It Compares to a Health Savings Account
What is a flexible spending account? An FSA is an employer-sponsored benefit that lets you set aside part of your paycheck, before income taxes, to pay for eligible expenses. The most common type covers out-of-pocket health care costs. Another type covers dependent care, such as daycare or after-school programs.
FSAs are simple, but the choices around them are often made in a few minutes during open enrollment and never revisited. For many households, especially those also eligible for a health savings account, those few minutes deserve more thought. The decision touches cash flow, taxes, and, in the case of an HSA, long-term investing.
Start Here: A Complimentary Wealth and Tax Review
Benefit elections are one piece of a larger picture. Compound offers a complimentary, no-obligation wealth and tax review that looks at how your workplace benefits, investments, and taxes fit together. A review may include:
Workplace benefits: FSA, HSA, retirement plan, and equity compensation choices
Recent tax returns: pre-tax opportunities and items worth discussing before year end
Cash flow: how much to set aside for near-term expenses versus long-term goals
Investment accounts: where an HSA may fit alongside your other savings
Request your wealth and tax review.
How a Flexible Spending Account Works
With a health FSA, you choose an annual amount during enrollment. That amount is deducted from your pay in equal installments, before federal income and payroll taxes. You then use the account to reimburse eligible expenses such as deductibles, copays, prescriptions, dental work, and vision care. Annual limits apply and are adjusted periodically.
A few features are worth knowing:
Full amount available early. Under a health FSA, your full annual election is generally available from the first day of the plan year, even though contributions come out of each paycheck.
Use it or lose it. Unused funds are generally forfeited at the end of the plan year. Employers may offer either a short grace period or a limited carryover into the next year, but not both, and some offer neither.
Tied to your employer. If you leave your job, your FSA typically ends unless you elect continuation coverage.
Dependent care FSAs are separate. They have their own limit and rules, and they reimburse care costs, not medical bills.
Because of the forfeiture rule, the goal with an FSA is usually to estimate predictable expenses rather than to over-save.
What Is a Health Savings Account?
A health savings account, or HSA, is a tax-advantaged account available to people enrolled in a qualifying high-deductible health plan who meet other eligibility rules. Unlike an FSA, an HSA belongs to you, not your employer.
HSAs are often described as having three tax advantages: contributions may be pre-tax or deductible, growth inside the account is not taxed, and withdrawals for qualified medical expenses are not taxed. Balances roll over from year to year, and many HSA providers allow you to invest the money once a minimum cash balance is met. Annual contribution limits apply, with an additional catch-up amount for those 55 and older.
Withdrawals for non-medical purposes are generally taxed as income, and before age 65 they may also face an additional penalty. Enrolling in Medicare ends your ability to make new HSA contributions, which is a detail worth planning around if you work past 65. State tax treatment of HSAs can differ from federal treatment, so it is worth confirming how your state handles them.
FSA vs HSA: Key Differences
Ownership: a health FSA is an employer plan; an HSA belongs to you.
Eligibility: an FSA is offered through your employer; an HSA requires a qualifying high-deductible health plan.
Unused funds: FSA money is generally forfeited, with limited exceptions; HSA money rolls over indefinitely.
Investing: FSA money is not invested; HSA money often can be.
Portability: an FSA generally ends when you leave your job; an HSA goes with you.
In most cases you cannot contribute to both a general-purpose health FSA and an HSA in the same year. Some employers offer a limited-purpose FSA, which covers only dental and vision expenses and can be used alongside an HSA.
Why the HSA Is Also a Wealth Management Decision
For households that can afford to pay current medical costs from cash flow, some choose to let the HSA grow invested and save receipts for future reimbursement. Over many years, this approach may turn the HSA into a meaningful pool of money for health care costs in retirement, which are often among the largest expenses retirees face.
That makes the HSA part of your investment plan, not just your benefits package. Questions worth discussing include:
How the HSA should be invested relative to your overall allocation and risk tolerance
Whether the HSA is a good place for higher-growth assets as part of an asset location strategy
How HSA savings fit with your 401(k), IRA, and taxable accounts
How the account will be used, and taxed, if it passes to a beneficiary who is not your spouse
To see how regular contributions invested over time may grow under different assumptions, try the Compound calculator. Results are hypothetical and for illustration only.
Where FSAs Fit for Executives and Families
An FSA may make sense when you have predictable expenses, such as orthodontics, regular prescriptions, or childcare. Executives and professionals juggling several benefit choices may find it useful to review them together each year, along with retirement contributions and equity awards. For more, see financial planning for early-career executives and wealth planning for rising executives.
Business owners who sponsor benefits for their teams face a different set of questions, including plan design and how benefits fit with their own compensation. Those are best reviewed alongside business tax planning in Wisconsin.
Coordinating Benefits, Taxes, and Investments
Benefit elections affect your paycheck, your tax return, and your long-term savings. Compound brings wealth management and tax planning and preparation together so those decisions can be made as part of one plan. A comprehensive financial plan typically includes a look at benefits each year. We work with individuals and families throughout Wisconsin, including Milwaukee, Madison, Appleton, Brookfield, and Eau Claire, as well as surrounding areas.
Heading into open enrollment? Request a complimentary wealth and tax review.
Frequently Asked Questions
What is a flexible spending account used for?
A health FSA reimburses eligible out-of-pocket medical, dental, and vision costs with pre-tax dollars. A dependent care FSA reimburses eligible care costs for children or other dependents so you can work.
What happens to unused FSA money?
It is generally forfeited at the end of the plan year. Your employer may offer a short grace period or a limited carryover, but not both.
FSA vs HSA: which is better?
It depends on your health plan, expected expenses, and savings goals. An HSA requires a qualifying high-deductible plan but can be invested and carried forward. An FSA is available with more plans but is generally use it or lose it.
Can I have an FSA and a health savings account at the same time?
Generally not with a general-purpose health FSA. A limited-purpose FSA covering dental and vision may be used alongside an HSA if your employer offers one.
Can I invest my health savings account?
Many HSA providers allow investing once a minimum cash balance is reached. Investments can lose value, so the choice should fit your overall plan.
Compound is a registered investment adviser. Registration does not imply a certain level of skill or training. This article is for informational and educational purposes only and should not be construed as personalized investment, tax, or legal advice. Tax laws are complex and subject to change, and benefit plan features vary by employer. Strategies discussed may not be suitable for everyone, and there is no guarantee that any strategy will achieve its objectives or reduce taxes. Calculator results are hypothetical, are not guarantees of future results, and do not reflect any actual investment. Investing involves risk, including possible loss of principal. Please consult your tax, legal, and financial professionals before acting on any information in this article. For more information, see Compound's Form ADV, available at adviserinfo.sec.gov.
About Compound Wealth
Compound Wealth brings together professionals across tax planning, wealth management, accounting, and business transition services to provide a coordinated planning experience. This collaborative approach supports evaluating financial decisions from multiple perspectives while supporting each client's broader planning objectives.
