FSA vs HSA Calculator

Use this FSA vs HSA Calculator to compare tax savings, contribution limits, and benefits of Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). This tool helps you decide which account is more beneficial for your health-related expenses based on your income, expenses, and healthcare plan type.

Why Use This Calculator?

This calculator helps you:

Estimate tax savings from FSA and HSA contributions
Compare contribution limits and rollover options
Choose the better plan based on your healthcare needs

How It Works

Inputs:

Annual income
Planned contribution amount
Estimated medical expenses
Tax rate (Federal + FICA + State)
Type of health insurance plan (HDHP or not)

Outputs:

Total tax savings for FSA and HSA
Contribution limits
Funds rollover eligibility

Formula Used

Tax Savings = Contribution × (Federal Tax + FICA + State Tax)

HSA Contribution Limits (2025):

Self-only: $4,300
Family: $8,550
+ $1,000 catch-up if age 55 or older

FSA Contribution Limits (2025):

Healthcare FSA: $3,200 per employee
Dependent Care FSA: $5,000 per household

Example Comparison

Suppose you have a salary of $70,000, and you plan to contribute $3,000 into either an FSA or HSA. Your total tax rate (Federal + FICA + State) is 32%.

FSA Tax Savings = $3,000 × 32% = $960

HSA Tax Savings = $3,000 × 32% = $960

Difference:

FSA funds may expire or be limited for rollover
HSA funds roll over indefinitely and can be invested
HSA requires a High-Deductible Health Plan (HDHP)

Conclusion: If you’re eligible for an HSA, it typically offers more long-term flexibility and tax advantages than an FSA.

FSA vs HSA: Key Differences

Feature	FSA	HSA
Account Ownership	Employer-owned	Employee-owned
Rollover	Limited ($640 max in 2025 or grace period)	Unlimited rollover
Eligibility	Offered by employer	Must have HDHP
Investing Option	No	Yes
Contribution Limits (2025)	$3,200 (health FSA)	$4,300 / $8,550

Frequently Asked Questions

Can I have both an FSA and HSA?

You generally cannot have both a general-purpose FSA and an HSA at the same time. However, you can have a Limited Purpose FSA (for dental and vision) with an HSA.

Which is better for long-term savings?

An HSA is better for long-term savings and retirement planning due to its investment options and unlimited rollover.

Is an HSA better for high medical expenses?

Both can help, but HSA offers more flexibility and permanent fund ownership. If you’re not on an HDHP, an FSA might be your only option.

Related Tools

Summary

The FSA vs HSA Calculator is your guide to maximizing tax savings while planning for healthcare costs. Evaluate your plan eligibility, tax bracket, and expense habits to make an informed decision between these two powerful accounts.