FSA Use It or Lose It: Don't Waste Your FSA Money

The FSA use-it-or-lose-it rule means any funds remaining in your Flexible Spending Account at the end of the plan year are forfeited — you lose them permanently. Americans forfeit an estimated $7+ billion in FSA funds every year. Don't be part of that statistic. Here's your complete guide to spending your FSA wisely before the deadline, plus strategies to ensure you never lose a dollar.

Understanding the FSA Use-It-or-Lose-It Rule

When you contribute to a Health Care FSA, you're committing to spend that money on qualified medical expenses within the plan year. If you don't spend it, it's gone — your employer keeps it.

However, there are two possible safety valves:

Grace Period

Some employers offer a 2.5-month grace period after the plan year ends. If your plan year ends December 31, you'd have until March 15 of the next year to incur expenses against your previous year's balance.

Carryover

Other employers offer a carryover provision allowing you to roll up to $640 (2026 limit) into the next plan year. This is not inflation-adjusted annually, so check your specific plan.

Important: Your employer can offer a grace period OR a carryover — not both. And they're not required to offer either. Check with your HR department to know which (if any) applies to your plan.

FSA Contribution Limit 2026

The 2026 Health Care FSA contribution limit is $3,300. This is the maximum you can elect to contribute during open enrollment. Unlike HSAs, your full annual election is available on Day 1 of the plan year — you don't have to wait for payroll deductions to accumulate.

Smart FSA Spending Strategies

Early in the Year: Use FSA for Known Expenses

Annual physicals and preventive care copays
Dental cleanings (2 per year for most people)
Eye exams and updated prescriptions
Known prescription medications
Scheduled procedures or treatments

Mid-Year: Reassess and Plan

Check your FSA balance around June-July. If you're on track to have a surplus:

Schedule dental work you've been postponing
Get new glasses or contacts
Stock up on OTC medications and first aid supplies
Start exploring wellness expenses that need LMNs

Q4 Crunch: Spend Down Your Balance

If you're approaching year-end with money left:

Always-eligible items you can stock up on:

OTC medications (pain relievers, allergy meds, cold medicine, digestive aids)
Sunscreen (SPF 15+) for the whole family
First aid supplies (bandages, antiseptic, thermometers)
Contact lens solution
Menstrual products
Reading glasses
Acne treatments

Bigger-ticket items:

New prescription glasses or sunglasses
Dental work you've been delaying
LASIK consultation or deposit
Theragun or other recovery devices
Air purifier (with LMN)
HigherDOSE products (with LMN)

Recurring expenses to prepay (if your plan allows):

FSA-Eligible Expenses Most People Forget

These are all FSA eligible and can help you spend down your balance:

Sunscreen — any SPF 15+ product
OTC medications — Tylenol, Advil, Zyrtec, Pepcid, etc.
First aid kits — pre-assembled or build your own
Bandages and wound care — Band-Aids, gauze, medical tape
Thermometers — digital, ear, forehead
Blood pressure monitors — home monitoring devices
Pregnancy tests — over-the-counter
Hearing aid batteries
Denture adhesives and cleaners
Motion sickness medications
Sleep aids (melatonin, OTC sleep medicine)
Menstrual cups and period products

FSA vs. HSA: Why This Problem Doesn't Exist With HSA

The use-it-or-lose-it problem is the biggest disadvantage of FSAs compared to HSAs. With an HSA:

Funds roll over indefinitely — no expiration, ever
You can invest for long-term growth
You control the account — not tied to your employer
Shoeboxing lets you reimburse decades later

If you're eligible for an HSA (requires HDHP), seriously consider switching from an FSA. The rollover advantage alone is worth it. See can you have both an HSA and FSA for scenarios where you might use both.

How to Pick the Right FSA Contribution Amount

The goal: contribute enough to cover your expected medical expenses, but not so much that you risk losing money. Strategies:

Review last year's medical expenses. What did you spend on doctor visits, prescriptions, dental, vision, and OTC items?

Factor in known upcoming expenses. Braces, LASIK, dental work, new glasses?

Add a conservative buffer. Better to under-contribute slightly than over-contribute.

Consider LMN expenses. Gym memberships, supplements, and wellness services with LMNs expand your eligible spending, making it easier to use your full FSA.

How Hammock Helps With FSA

Hammock works with both HSA and FSA accounts. Hammock's automatic expense tracking identifies FSA-eligible expenses throughout the year, so you always know where your balance stands versus your eligible spending.

Hammock Premium includes unlimited LMNs, which is especially valuable for FSA users. More LMN-covered expenses mean more ways to spend your FSA before it expires. The average member saves $1,000-$1,400/year — and for FSA users, that savings often means the difference between losing funds and spending them wisely.

The Bottom Line

Don't forfeit your FSA funds. Plan your contributions carefully, track your spending throughout the year, and use LMNs to expand your eligible expense categories. If you're consistently struggling with the use-it-or-lose-it problem, consider switching to an HSA where funds never expire. With the 2026 FSA limit at $3,300 and the HSA alternative offering permanent rollover, it's worth evaluating which account type serves you better.