What's the difference between an FSA and an HSA?

An FSA is employer-owned (use it or lose it, mostly), available with any health plan, and doesn't roll over fully. An HSA is yours forever, requires an HDHP, rolls over indefinitely, and can be invested. An HSA offers more flexibility on those points, while an FSA can still be useful for predictable expenses in a given year - and does not require an HDHP.

What happens to unused FSA money?

It depends on your employer's plan. Most offer either a $680 carryover (2026) or a 2.5-month grace period into the next year. Any amount beyond that is forfeited. This is why it's important to estimate expenses carefully.

What expenses qualify?

Health FSA: copays, deductibles, prescriptions, dental work, vision, contacts, and many OTC items. Dependent Care FSA: daycare, preschool, before/after school programs, and day camps for children under 13.

Is the $7,500 dependent care FSA limit available to everyone?

The dependent care FSA limit rose from $5,000 to $7,500 for 2026 under the One Big Beautiful Bill Act (OBBBA). Adopting the higher limit is optional for employers, who must amend their plan to offer it, so if your employer has not, your limit may still be $5,000. The limit is $3,750 for those married filing separately. Check your plan documents for the amount your employer allows.

Can I have both an FSA and an HSA?

Generally no - a regular health FSA disqualifies you from HSA contributions. However, you CAN have a Limited Purpose FSA (dental and vision only) alongside an HSA.

How much do I actually save with an FSA?

You save your marginal tax rate on every dollar contributed. At a 24% federal bracket plus 7.65% FICA, that's roughly 32% savings. A $3,400 health FSA saves you about $1,088 in taxes.

Tax Optimization

Flexible Spending Account (FSA)

FREE to View

beginner · $0 - $50K

FSAs let you set aside pre-tax money for qualified medical expenses (up to $3,400) or dependent care (up to $7,500).

You avoid federal income tax, Social Security tax, and Medicare tax on contributions - an instant 25-35% savings.

Annual Limit

$3,400 health / up to $7,500 dependent care (2026)

Want to save your results?

Create a free account to save strategies and track your progress.

Tax Benefit

Pre-tax contributions save 25-35% on medical/dependent care expenses

Requirements

Employer offers FSA
Predictable medical or dependent care expenses
Use it or lose it (limited rollover)

How to Implement

1Estimate annual medical/dependent care expenses
2Enroll during open enrollment
3Contribute up to $3,400 (health) or $7,500 (dependent care) in 2026
4Submit receipts for reimbursement
5Use funds before deadline (March 15 following year typically)

Frequently Asked Questions

Annual Limit

$3,400 health / up to $7,500 dependent care (2026)

Educational Only: This information is for educational purposes. Consult a qualified financial advisor or tax professional before implementing.

Last reviewed: April 2026

Related tax optimization strategies

HSA Triple Tax AdvantageThe only account with tax-free contributions, growth, AND withdrawals for medical expenses.Tax-Loss HarvestingSell investments at a loss to offset gains and reduce taxes by up to $3,000/year.Direct IndexingOwn individual stocks instead of index funds to harvest $20K-50K+ in tax losses annually.

Sources

Internal Revenue Service, Rev. Proc. 2025-32
2026 inflation-adjusted amounts (tax brackets, standard deduction, estate & gift, FSA, credits)
Internal Revenue Service, Notice 2025-67
2026 retirement plan limits (401(k), IRA, SIMPLE, catch-up)
Internal Revenue Service, Rev. Proc. 2025-19
2026 HSA and HDHP inflation-adjusted limits

Educational information only. Not financial, tax, or legal advice or a recommendation. Figures are drawn from the primary sources cited above; verify current amounts with the source before acting.

Flexible Spending Account (FSA)

Interactive Calculator

Tax Benefit

Requirements

How to Implement

Frequently Asked Questions

What's the difference between an FSA and an HSA?

What happens to unused FSA money?

What expenses qualify?

Is the $7,500 dependent care FSA limit available to everyone?

Can I have both an FSA and an HSA?

How much do I actually save with an FSA?

Annual Limit

Related tax optimization strategies

Sources