FSA Contribution Calculator & Tax Savings
About the FSA Contribution Calculator
A Flexible Spending Account (FSA) allows you to set aside pre-tax dollars for qualified medical, dental, and vision expenses. For 2026, the IRS contribution limit is $3,300. Unlike HSAs, FSA funds are generally subject to a "use-it-or-lose-it" rule — unspent funds at year-end may be forfeited (though many employers offer a grace period or allow a limited rollover of up to $660). This calculator helps you determine the right FSA contribution amount based on your anticipated healthcare spending, and estimates how much you'll save in federal income taxes. Contributing through payroll also avoids FICA taxes, adding additional savings. The key is contributing only what you expect to use, since forfeited funds are lost permanently.
Frequently Asked Questions
What is the FSA contribution limit for 2026?
The IRS has set the 2026 FSA contribution limit at $3,300 per employee. If both spouses have access to FSAs through their employers, each can contribute up to $3,300 for a combined household maximum of $6,600.
What expenses qualify for FSA reimbursement?
Qualified expenses include co-pays, deductibles, prescription medications, dental care, vision care (glasses, contacts, exams), and many over-the-counter items including menstrual products and COVID-19 tests.
What happens to unused FSA funds at year-end?
Most FSA plans have a "use-it-or-lose-it" rule. However, employers may offer a grace period of up to 2.5 months or allow rollover of up to $660 to the next plan year. Check your plan documents for your employer's specific rules.
Can I have both an FSA and an HSA?
Generally no — you cannot contribute to a health FSA and an HSA simultaneously. However, you may be able to have a Limited-Purpose FSA (for dental and vision only) alongside an HSA.
Are FSA funds available immediately at the start of the year?
Yes. Unlike HSAs, the full annual FSA election amount is available on day one of the plan year, even before all payroll contributions have been made. This is a front-loading advantage unique to FSAs.
Disclaimer: Results are estimates only. Consult a tax professional or benefits administrator for personalized advice.
How to Use This Calculator
- Enter your details — Fill in the required fields above with your personal or policy information. The more accurate your inputs, the better your estimate.
- Review your results — Your estimate appears instantly as you complete the form. Check the breakdown to understand how each factor affects your numbers.
- Compare and take action — Use the results to compare options, discuss with your insurance agent, or make informed decisions about your coverage needs.
Common Use Cases
- Shopping for a new policy — Get a baseline estimate before requesting quotes from multiple insurers so you know what to expect and can negotiate effectively.
- Reviewing coverage at renewal — Compare your current costs against what this calculator suggests to identify potential savings or coverage gaps before your policy renews.
- Financial planning and budgeting — Factor insurance costs into your monthly budget or long-term financial plan with realistic estimates rather than guesswork.