You can only change your FSA contribution during open enrollment or if you have a may have access to life event

FSA contributions are locked in for the plan year — you cannot change the amount you contribute whenever you want. The IRS enforces this rule strictly. You get one main window to set your contribution: during your employer's open enrollment period, which usually happens once a year in the fall for coverage starting January 1.

The only exception is a may have access to life event. If something significant happens — you get married, have a baby, lose other health coverage, or experience a major change in expenses — you can request a change within 30 to 60 days of the event. Your employer's benefits administrator decides the exact important date.

If you miss both windows, you are stuck with your current contribution for the rest of the plan year. This is why getting the amount right matters: you cannot straightforward lower it if you realize you chose too high, and you cannot raise it mid-year if you need more coverage.

Key Takeaways

  • FSA contributions can be changed only during open enrollment (usually fall) or within 30 to 60 days of a may have access to life event like marriage, birth, or loss of coverage.
  • may have access to life events are narrowly defined — a job change, salary increase, or change of mind do not count.
  • If you change jobs or lose FSA coverage, you have a limited window (usually 60 days) to roll unused funds into a new FSA or lose them under the "use-it-or-lose-it" rule.
  • Your employer's benefits team controls the exact important date and which events they recognize, so contact them directly rather than relying on general rules.

What counts as a may have access to life event

The IRS has a specific list of events that let you change your FSA contribution mid-year. Marriage, divorce, birth of a child, adoption, and death of a spouse or dependent all may have access to. Loss of other health coverage — yours or a family member's — also opens the window. A significant change in your child care costs or a change in your spouse's employment that affects your household expenses can count too.

What does not count: a raise or bonus, a change in your job title, deciding you want to save more money, or straightforward changing your mind about how much you need. Your employer's benefits administrator has the final say on whether an event qualifies, so if you are unsure, ask them before you assume you can make a change.

How to request a change after a life event

Contact your employer's benefits department or HR team as soon as the event happens. You will need to provide documentation: a marriage certificate for marriage, a birth certificate for a new child, a divorce decree for divorce, a letter from your other insurance carrier if you lost coverage. Different employers ask for different proof, so ask what they need before you gather documents.

Submit your request within the important date your employer sets — usually 30 to 60 days after the event. If you miss the window, you cannot make the change. Once your request is approved, the new contribution amount takes effect on the date your employer specifies, which may be the first of the next month or the next pay period.

What happens if you change jobs mid-year

If you leave your job, your FSA coverage ends on your last day of employment or on the date your employer specifies. You have a limited window — typically 60 days — to move any unused FSA funds to a new FSA at your new employer, if they offer one. This is called a rollover. Not all employers allow rollovers, so check with your new benefits team when ready.

If your new employer does not offer an FSA or does not allow rollovers, any money left in your old FSA is forfeited under the use-it-or-lose-it rule. You cannot get it back. This is one reason to be conservative with your FSA contribution: money you do not spend by December 31 (or March 15 if your plan has a grace period) is gone.

Understanding the open enrollment window

Open enrollment is your may provide chance to change your FSA contribution for the next plan year. It usually runs for two to four weeks in October or November, and your employer will announce the dates. During this window, you can increase your contribution, decrease it, or stop contributing altogether.

Changes you make during open enrollment take effect on January 1 of the next year (or whenever your plan year begins). If you do not make a change during open enrollment, your current contribution continues automatically into the next year — you do not have to do anything to keep it the same.

Why the IRS locks in FSA contributions

The use-it-or-lose-it rule exists because FSAs are tax-advantaged accounts. You contribute pre-tax dollars, which lowers your taxable income. To prevent people from gaming the system — contributing a small amount, getting a tax break, then withdrawing it all — the IRS requires you to commit to an amount for the full year.

This also means you need to estimate your medical and dependent care expenses carefully. If you think you will spend $2,500 on out-of-pocket medical costs, contribute $2,500. If you overestimate and contribute $3,500 but only spend $2,000, you lose the extra $1,500. If you underestimate and contribute $1,500 but spend $3,000, you pay the difference out of pocket.

Frequently Asked Questions

Can I lower my FSA contribution if I realize I contributed too much?

No, not unless you have a may have access to life event. If you overestimated your expenses, you are stuck with that contribution for the rest of the plan year. This is why many people contribute conservatively — it is safer to contribute less and have money left over than to contribute too much and lose it.

What if my employer does not offer open enrollment?

All employers that offer FSAs must have an open enrollment period, though the timing varies. Check with your HR or benefits team for your company's specific dates. If you cannot find the information, ask directly — they are required to tell you when you can make changes.

Does getting married mid-year let me change my FSA?

Yes, marriage is a may have access to life event. You have 30 to 60 days from your wedding date to contact your benefits team and request a change. You will need to provide a marriage certificate. The change usually takes effect on the first of the next month or the next pay period.

Can I move my FSA balance to a savings account if I change jobs?

No. You can only move unused FSA funds to a new FSA at a new employer if they offer one and allow rollovers. Otherwise, the money stays in your old FSA until the end of the plan year, and you can still use your old debit card or submit claims to spend it. Any balance left after the plan year ends is forfeited.

What if I have a grace period — does that change when I can use my FSA money?

A grace period extends your spending important date to March 15 of the following year, but it does not change when you can alter your contribution. You still can only change your contribution during open enrollment or after a may have access to life event. The grace period just gives you extra time to spend money from the previous plan year.