What Is a Flexible Spending Account (FSA)?

Updated: June 17, 2026

Advertising & Editorial Disclosure

Key Takeaways
blueCheck icon

FSAs are employer-established accounts for paying eligible medical expenses with pre-tax dollars, which cuts your taxable income.

blueCheck icon

The IRS caps 2026 contributions at $3,400 for Healthcare FSAs and $7,500 for Dependent Care FSAs.

blueCheck icon

Pre-tax contributions lower the taxes you pay, saving you money on qualified health care costs throughout the year.

blueCheck icon

Unspent funds are forfeited at year-end under use-it-or-lose-it rules. Employers can soften that by offering a 2.5-month grace period or a carryover of up to $680.

What Does Flexible Spending Account Mean?

A Flexible Spending Account is a tax-advantaged account your employer establishes to help you pay for eligible out-of-pocket health care costs with pre-tax dollars. You can contribute up to $3,400 to a Healthcare FSA in 2026. You elect a contribution amount at the start of each plan year, and the money is deducted from your paycheck before taxes, reducing your taxable income. 

  • You decide your annual contribution during open enrollment
  • The IRS sets annual contribution maximums updated each year
  • FSAs follow use-it-or-lose-it rules with limited exceptions
  • Your employer may offer a 2.5-month grace period or carryover options
wage icon
TYPES OF FLEXIBLE SPENDING ACCOUNTS
  • Healthcare FSA: The most common type. Covers medical, dental and vision expenses health insurance doesn't fully pay. The 2026 contribution limit is $3,400.
  • Dependent Care FSA: Covers childcare or eldercare costs while you work. The 2026 limit is $7,500 ($3,750 if married filing separately).
  • Limited Purpose FSA: Dental and vision expenses only. Works alongside an HSA if you have a high-deductible health plan.
  • Post-Deductible FSA: Covers eligible expenses after you meet your health plan deductible. Compatible with HSAs.

What Can You Use an FSA For?

Your FSA covers qualified medical expenses your health insurance plan doesn't fully pay. These accounts pay for out-of-pocket costs like deductibles, copays and coinsurance for medical, dental and vision care.

  • firstAidKit icon
    Medical Expenses

    Deductibles, copayments and coinsurance for doctor visits, hospital stays, lab tests and diagnostic services count as FSA-eligible expenses.

  • vaccine icon
    Prescription Medications

    Prescription drugs and insulin qualify for FSA reimbursement. Over-the-counter medications require a prescription to be FSA-eligible, though some exceptions apply.

  • tooth icon
    Dental Care

    Cleanings, fillings, crowns, orthodontics and other dental treatments qualify. Regular preventive care and necessary procedures are FSA-eligible.

  • eyeglasses icon
    Vision Care

    Eye exams, prescription glasses, contact lenses, lens solution and reading glasses qualify for FSA coverage.

  • doctor icon
    Specialist Treatments

    Physical therapy, chiropractic care, acupuncture and occupational therapy qualify when medically necessary. Mental health counseling also counts as an eligible expense.

  • mask icon
    Personal Protective Equipment

    Hand sanitizer, sanitizing wipes and face masks became FSA-eligible expenses. These items help you stay protected while managing health care costs.

Check your FSA plan documentation for a complete list of eligible expenses.

What Expenses Are Not FSA-Eligible?

FSAs have restrictions on ineligible expenses. Health insurance premiums for medical, dental or vision coverage can't be paid with FSA funds. Long-term care insurance or direct care costs don't qualify for FSA reimbursement. 

  • Cosmetic procedures not medically necessary
  • Most vitamins and supplements unless prescribed by a doctor (prenatal vitamins are an exception)
  • Expenses already reimbursed by another health plan
  • CBD products 

Per IRS guidelines and HealthCare.gov, these restrictions prevent double-dipping and make sure FSA funds cover only qualified medical expenses.

What Is the Difference Between an FSA and an HSA?

FSAs and HSAs both offer tax advantages for health care costs, but work differently. An FSA is employer-tied and requires you to use funds within the plan year, while an HSA belongs to you and lets funds roll over indefinitely. You can open an FSA if your employer offers an FSA as part of the company benefits package through the Health Insurance Marketplace, but HSAs require enrollment in a high-deductible health plan.

Eligibility and Enrollment
Available if your employer offers an FSA, regardless of your health plan type
Requires enrollment in a high-deductible health plan with minimum deductibles set by the IRS
Ownership and Portability
Owned by your employer and ends with employment unless continued through COBRA
Owned by you, portable between jobs and into retirement without restrictions
Contribution Limits (2026)
Healthcare FSA: $3,400 Dependent Care FSA: $7,500 ($3,750 married filing separately)
Individual: $4,300 Family: $8,550
Carryover and Rollover
Use-it-or-lose-it policy, though some plans allow up to $680 carryover or a 2.5-month grace period
Funds roll over annually without limit, letting you build reserves for future medical expenses
Tax Benefits
Reduces taxable income through pre-tax contributions; withdrawals tax-free for qualified medical expenses
Contributions reduce taxable income; earnings grow tax-free; withdrawals tax-free for medical expenses
Investment Options
No investment options; operates as a spending account for immediate medical needs
Offers investment options after reaching minimum balance; funds grow tax-free like retirement accounts

What Are the Pros and Cons of FSAs?

FSAs offer tax savings and flexibility but require careful planning because of use-it-or-lose-it rules. Review both advantages and drawbacks carefully to decide if an FSA fits your financial situation and health care needs.

Benefits and Disadvantages of FSAs
blueCheck icon
  • FSAs reduce taxable income through pre-tax contributions, lowering the taxes you pay on eligible medical expenses.
  • You can use FSA funds for medical, dental, vision and prescription expenses not covered by your insurance plan.
  • The full annual contribution is available immediately at the start of the plan year for large upfront medical costs.
  • FSAs lower your out-of-pocket health care costs substantially through tax savings on qualified medical expenses.
errorCheck icon
  • Use-it-or-lose-it rules create forfeiture risk if you don't spend all contributed funds within the plan year or grace period.
  • FSAs are employer-tied accounts that limit portability. You typically forfeit unused funds when leaving your job.
  • Accurate expense planning is required. Unexpected changes in medical needs can result in over- or under-contribution.
  • Health insurance premiums can't be paid with FSA funds, limiting the coverage types FSAs can help with.

Is an FSA Right for You?

An FSA is a better fit when medical expenses are predictable and job stability is high. The tax savings are real, but use-it-or-lose-it rules mean inaccurate estimates lead to forfeited funds.

Predictable medical expenses (regular prescriptions, recurring treatments or planned procedures)
Good fit
Pre-tax contributions lower your taxable income, and predictable costs make accurate contribution estimates possible. Set your contribution at the minimum you're confident you'll spend to avoid forfeiture.
Frequent job changes or a planned departure within the year
Not recommended
The account belongs to your employer and doesn't follow you. Unused funds are forfeited when you leave. If you expect to leave, contribute only what you'll spend before your end date, or look at portable coverage options instead.
Dependent care costs for children under 13 or incapable dependents
Good fit
A Dependent Care FSA is a separate account from a Healthcare FSA. It covers eligible care costs while you work and reduces taxable income by up to $7,500 in 2026. The two accounts serve different purposes and can be held simultaneously.
High-deductible health plan with HSA eligibility
Consider carefully
An HSA carries long-term advantages a Healthcare FSA can't match (balances roll over indefinitely and can be invested). A Limited Purpose FSA can be added for dental and vision expenses without affecting HSA eligibility. Compare the two before enrolling in an FSA.
Variable medical expenses that are difficult to predict
Consider carefully
Use-it-or-lose-it rules mean unpredictable costs create real forfeiture risk. Contribute the minimum you're confident you'll use. Before enrolling, confirm whether your employer's plan includes a grace period or carryover provision. Both reduce the chance of losing unused funds.

Flexible Spending Account: FAQ

Related Articles

About Mark Fitzpatrick

Mark Fitzpatrick, Licensed P&C Insurance Expert, MoneyGeek

Mark Fitzpatrick, a licensed Property and Casualty (P&C) Insurance Producer in Connecticut, is MoneyGeek's resident insurance expert. He has spent nearly a decade analyzing the market, first at LendingTree and now at MoneyGeek, where he produces original research on hundreds of carriers and millions of rates across auto, home, renters, health and life insurance.

He covers economics and insurance at MoneyGeek, and his work has been featured in The Washington Post, The New York Times and NPR, among other outlets.

Like all MoneyGeek analysts, he draws on independent cost and consumer experience data. No insurance company partnership influences his recommendations.

Mark holds a B.A. from Boston College and an M.A. in Economics and International Relations from Johns Hopkins University. He started his career in financial risk management at State Street and is also a five-time “Jeopardy!” champion.

Read Full Bio »
Sources