FSA Calculator 2026
Estimate tax savings from a Flexible Spending Account — Health FSA ($3,400), Dependent Care FSA ($7,500), or LP-FSA ($3,400). Includes spend-down tracker and FSA vs HSA comparison. No HDHP required.
By Sammy S. · Founder · AuthorUpdated for 2026
How it works
Pick FSA type
Health FSA, Dependent Care FSA, or LP-FSA (dental/vision with an HSA).
Enter contribution & bracket
Set annual election, federal marginal rate, and pay frequency. Toggle self-employed or MFS if needed.
See savings & spend-down
Instant tax + FICA savings, per-paycheck cost, and daily/weekly targets to avoid forfeiture.
How to use this FSA calculator
Choose Health FSA, Dependent Care FSA, or Limited-Purpose FSA, enter your planned contribution and federal tax bracket, then set pay frequency. The calculator estimates income-tax savings plus FICA savings when you contribute via payroll, and includes a spend-down tracker so you don’t forfeit unused funds.
Your inputs
Type, contribution, bracket & pay frequency
Pay for most medical, dental, and vision expenses. Use-it-or-lose-it (with optional carryover/grace period).
100% of 2026 limit
Plan year-end option
Ask your employer — they choose one (not both).
Spend-down tracker
Enter balance and days left to see daily/weekly spend targets before forfeiture.
Real cost after FSA
At your 22% bracket + 7.65% FICA, common expenses after savings:
Prescriptions
Typical: $50
$35.18
saves $14.83
Doctor copay
Typical: $30
$21.11
saves $8.90
Dental work
Typical: $250
$175.88
saves $74.13
Glasses / contacts
Typical: $200
$140.70
saves $59.30
Physical therapy
Typical: $75
$52.76
saves $22.24
Lab tests
Typical: $80
$56.28
saves $23.72
Mental health visit
Typical: $150
$105.53
saves $44.47
Chiropractic care
Typical: $60
$42.21
saves $17.79
OTC medications
Typical: $25
$17.59
saves $7.41
Menstrual products
Typical: $15
$10.55
saves $4.45
First aid supplies
Typical: $40
$28.14
saves $11.86
Blood pressure monitor
Typical: $45
$31.66
saves $13.34
Estimated annual tax savings
Income tax + FICA (payroll) at 22% bracket
$1,008
$748
Income tax
$260
FICA saved
$2,392
Net cost
$92.00
Per check
2026 limit check
Health FSA
Unspent Health FSA funds are forfeited at plan year end unless your employer offers carryover (up to $680) or a 2.5-month grace period — not both.
Dependent Care FSA: always use-it-or-lose-it.
The use-it-or-lose-it rule — and how to avoid forfeiting your FSA funds
Americans forfeit hundreds of millions of dollars in FSA funds each year. The default rule is simple: any money left in your Health FSA at the end of your plan year goes back to your employer. You never get it back. But there are two employer-optional relief mechanisms — and only one can apply per plan year:
Dependent Care FSA: always use-it-or-lose-it. No carryover or grace period option.
FSA vs HSA — which is right for you?
Both accounts reduce your taxable income and save FICA via payroll deduction. The key difference: HSAs are only available with a High-Deductible Health Plan (HDHP) but have no use-it-or-lose-it rule and allow investment growth. FSAs work with any health plan but require planning to avoid forfeiting funds.
| Feature | Health FSA | LP-FSA | DCFSA | HSA |
|---|---|---|---|---|
| Requires HDHP? | No | No (+ HSA) | No | Yes |
| 2026 annual limit | $3,400 | $3,400 | $7,500 | $4,400 / $8,750 |
| Use-it-or-lose-it? | Yes | Yes | Always yes | No — rolls over forever |
| Carryover option? | Up to $680 | Up to $680 | None | Unlimited |
| Investment growth? | No | No | No | Yes |
| FICA savings? | Yes | Yes | Yes | Yes |
| Covers medical? | Yes | Dental/vision only | No | Yes |
| Covers childcare? | No | No | Yes | No |
Quick rule: If your employer offers an HDHP with HSA — open an HSA and an LP-FSA. If you're on a traditional health plan, open a Health FSA. If you have children in daycare or elderly dependents, add a Dependent Care FSA.
4 reasons to choose an FSA — even if you could open an HSA
An HSA's triple tax advantage gets all the attention, but FSAs have unique structural benefits that make them the better choice in specific situations — and not just as a consolation prize for non-HDHP enrollees.
Dependent Care FSA — now up to $7,500 for 2026
The DCFSA limit jumped to $7,500 (from $5,000) starting January 1, 2026 under the One Big Beautiful Bill Act — employers must amend their plan to offer the higher limit. At a combined federal + state + FICA marginal rate of 35%, a full $7,500 DCFSA saves roughly $2,625 in taxes. Married filing separately: each spouse's DCFSA is limited to $3,750.
One important interaction: the DCFSA and the Child and Dependent Care Tax Credit (CDCTC) cover the same expenses. You can't use both for the same dollar of care. Recommended strategy: use the DCFSA for the first $7,500 in eligible care, then claim the CDCTC for any remaining eligible expenses above that.
2026 FSA contribution limits
IRS-published limits per Rev. Proc. 2025-32, effective January 1, 2026.
| Account type | 2025 | 2026 | Notes |
|---|---|---|---|
| Health FSA | $3,300 | $3,400 | Max carryover: $680 |
| LP-FSA | $3,300 | $3,400 | Dental & vision only; use with HSA |
| DCFSA (single / MFJ) | $5,000 | $7,500 | OBBA (Jul 4, 2025); employer must opt in |
| DCFSA (married filing separately) | $2,500 | $3,750 | Per spouse |
| Health FSA carryover | $660 | $680 | If employer allows; not for DCFSA |
The uniform coverage rule — Day 1 access to your full election
Under the uniform coverage rule (Prop. Treas. Reg. §1.125-5), your full Health FSA annual election is available on the first day of the plan year — even before a single paycheck has been deducted. If you spend your full $3,400 election in January and leave in February, your employer legally cannot claw back the unpaid portion without jeopardizing the plan's tax-qualified status under IRC §106.
Practical strategy: Schedule expensive planned procedures — LASIK, orthodontia, dental implants — in January when you have access to the full election. Submit all claims before your last day if you change jobs mid-year.
FSA-eligible items most people pay for with after-tax dollars by mistake
IRS Publication 502 is the definitive list. Common categories where people leave money on the table:
Commonly missed — ARE eligible
- Sunscreen (SPF 15+) — any brand, no Rx needed
- OTC reading glasses — drugstore or online
- Pregnancy tests and ovulation prediction kits
- Breast pumps, accessories, and breast milk storage bags
- CPAP machines, masks, and replacement supplies
- Blood glucose monitors and test strips (no Rx required)
- Blood pressure monitors and cuffs
- Menstrual care products — pads, tampons, cups (since CARES Act 2020)
- Dental sealants and fluoride treatments
- Contact lens solution and eye drops
Commonly assumed — NOT eligible
- Gym memberships or fitness equipment
- Teeth whitening products or services
- Cosmetic surgery (elective aesthetics)
- General vitamins and supplements (unless prescribed by doctor)
- Diet foods, organic food, or nutritional supplements
- Toothbrushes, toothpaste, dental floss (general hygiene)
- Shampoo, soap, or other toiletries
- Nicotine patches or gum — PARTIALLY eligible (prescription required for coverage)
- Concierge medicine subscriptions that function like insurance
- Overnight summer camp for children (DCFSA doesn't cover)
Year-end spend-down tip: Before Dec 31, stock up on non-perishable eligible items — sunscreen, OTC medications, contact solution, blood pressure monitors — rather than forfeit your balance.
Dual-FSA household strategy — maximizing when both spouses work
Two-income households can multiply FSA tax savings by coordinating elections across both employers:
| FSA type | Per spouse limit | Household max | Rule |
|---|---|---|---|
| Health FSA | $3,400 | $6,800 | Each spouse's limit is independent — no household cap |
| LP-FSA (with HSA) | $3,400 | $6,800 | Each spouse with HSA can pair an LP-FSA |
| DCFSA | $7,500 | $7,500 total | Household limit — not per spouse; $3,750 each if MFS |
Dual Health FSA savings example
Both spouses in 22% bracket, each elects $3,400 Health FSA. Combined: $6,800 × 22% income tax ($1,496) + $6,800 × 7.65% FICA ($520) = $2,016 total tax savings for the household in 2026.
Split-plan strategy
Spouse A enrolls in HDHP → HSA + LP-FSA. Spouse B enrolls in PPO → Health FSA. Each maximizes their plan's tax benefits independently. Source: IRC §129; IRS Pub. 969.
Common eligible expenses
Carryover max (Health FSA): $680 if your employer allows it.
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Last updated: 2026-07-27 · Estimates only; verify with IRS Pub 969 · Not tax advice.