FSA Carryover vs Grace Period Calculator

Use this FSA Carryover vs Grace Period Calculator to plan around unused Health FSA funds before your employer plan deadline. Enter the balance remaining, the option your plan actually offers, and your employer's carryover limit or expected grace-period expenses. The calculator shows what may carry forward, what could still be spent, and what could be forfeited. It is an educational planning tool, not tax, legal, or benefits-administration advice.

How the FSA Carryover Rule Works

Some employer Health FSA plans let a limited amount of unused funds carry into the following plan year. For plan years beginning in 2026, the federal maximum carryover is $680 if the plan permits it. Your employer may choose a lower amount or no carryover at all, so the plan document and benefits administrator control the real figure. A carryover is useful when you expect ongoing eligible expenses after the new plan year begins, but it does not turn every unspent dollar into a protected balance.

How the FSA Grace Period Works

Instead of a carryover, a plan may offer a grace period of up to 2 months and 15 days after the plan year ends. During that time, you can incur new eligible expenses and apply prior-year FSA funds to them. For example, a calendar-year plan with the full maximum grace period generally allows eligible expenses through March 15 of the next year. A grace period is about when the expense is incurred; it is not simply extra time to submit an old receipt.

Carryover and Grace Period Cannot Usually Be Combined

A Health FSA can generally offer a carryover, a grace period, or neither. It cannot normally offer both options for the same plan year. That is why this calculator asks you to select the arrangement in your employer's plan. The comparison view is only for planning: it helps you understand the different outcome each rule could produce from the same unused balance. It does not mean you can elect both benefits.

Estimate Your FSA Funds at Risk

The most useful number is often the amount at risk. With a carryover, any unused balance above your employer's stated limit may be forfeited after the plan-year deadline. With a grace period, the remaining balance can be used for qualifying expenses incurred during the grace window; any amount still unspent after that window may be forfeited. Use the estimate to create a practical checklist of qualifying expenses you genuinely need, such as prescriptions, copays, dental care, vision care, or eligible medical supplies. Do not buy items solely to spend down the account unless they are qualified expenses and appropriate for you.

Carryover, Grace Period, and Run-Out Period Are Different

These terms are easy to mix up. A carryover moves a permitted balance into the next plan year. A grace period extends the period in which new eligible expenses can be incurred. A run-out period is usually extra time to submit claims for expenses that were already incurred during the applicable plan year or grace period. The run-out period does not extend the date by which you can make new purchases. Enter your plan's claim-submission allowance separately so the calculator can show a planning deadline, but confirm the exact date with your administrator.

Check HSA Eligibility Before Making Changes

If you are considering an HSA-eligible high-deductible health plan, ask your benefits administrator how your Health FSA coverage, carryover, or grace period affects HSA eligibility. The answer can depend on the FSA type, remaining balance, coverage terms, and timing. This calculator deliberately does not make an HSA eligibility determination.

Plan Documents Control Your Actual Deadline

Federal rules set maximums, but an employer plan can use shorter deadlines, a lower carryover cap, or neither option. Verify your Summary Plan Description, benefits portal, and administrator notices before relying on any displayed date or dollar figure. Tax rules and plan terms can change, and this calculator uses the 2026 federal carryover maximum as a default only.