A limited-purpose flexible spending account (LPFSA) (also called a limited FSA or limited-scope FSA) is designed for people who have a Health Savings Account. IRS rules generally block a general purpose health FSA from pairing with HSA eligibility. A limited-purpose FSA typically reimburses only dental and vision (and sometimes preventive) expenses so you can keep contributing to an HSA paired with a qualifying high-deductible health plan.
Account contrast: HSA and FSA basics. General health FSA product: Healthcare FSA.
LPFSA vs general health FSA vs HSA
| Feature | Limited-purpose FSA | General health FSA | HSA |
|---|---|---|---|
| Typical pairing | With HDHP + HSA | With non-HSA medical plans | With qualifying HDHP |
| Eligible expenses | Usually dental/vision only (plan document rules) | Broad IRS medical list | Broad IRS medical list |
| Use-it-or-lose-it | Often yes (grace or carryover per plan) | Often yes | No; balances roll |
| Who owns the account | Employer plan | Employer plan | You (portable) |
Grace period vs carryover mechanics still matter for leftover LPFSA dollars: FSA grace periods and carryover. HSA deposit timing through the tax deadline: HSA contribution deadline basics.
Administrators you will see include HealthEquity, WEX, Fidelity benefits sites, and employer HR portals. The summary plan description (SPD) beats open-enrollment slide decks.
When an LPFSA is worth electing
- You have an HDHP + HSA and still pay meaningful dental or vision costs each year (braces patient-share, crowns, glasses, contacts).
- You want pre-tax payroll withholding for those predictable bills without breaking HSA eligibility.
- Your employer offers an LPFSA specifically labeled for HSA members (not a general FSA accidentally elected).
Skip or keep small if your dental/vision spend is near zero, or if a mistaken general FSA election would make you HSA-ineligible for the year.
Worked example: HSA family adds an LPFSA
Jordan has an HDHP through work, maxes a reasonable HSA contribution at Fidelity, and expects $1,200 in dental crowns/patient-share plus $400 in glasses for the year.
| Choice | Election | Result |
|---|---|---|
| HSA only | $0 LPFSA | Pays dental/vision from HSA or cash; keeps max HSA flexibility |
| HSA + LPFSA | $1,600 LPFSA | Pre-tax payroll covers the planned dental/vision; HSA stays for deductible and other care |
| Mistaken general FSA | $1,600 general FSA | Risks HSA eligibility problems for the coverage period—fix with HR immediately |
Jordan elects the LPFSA for $1,600, keeps receipts, and still funds the HSA for the HDHP deductible. Tax forms and withholding show up in ordinary filing season habits: Filing taxes for beginners.
Common mistakes
- Electing a general health FSA while trying to contribute to an HSA.
- Assuming LPFSA dollars can pay ordinary doctor copays or prescriptions (usually they cannot).
- Ignoring grace/carryover/run-out dates on leftover LPFSA balances.
- Over-electing and forfeiting dollars at year-end.
- Mixing dependent care FSA rules with LPFSA dental/vision rules.
Checklist
- Confirm your medical plan is HSA-eligible HDHP coverage.
- At open enrollment, choose limited-purpose / limited / HSA-compatible FSA—not general—if you want both.
- Estimate realistic dental and vision spend before you elect.
- Save itemized receipts; substantiate claims on time.
- Calendar grace, carryover, and run-out dates from the SPD.
- Coordinate LPFSA elections with HSA contribution goals so you do not starve the HSA for a tiny dental election.
Educational only. Not tax, legal, or benefits advice. Plan designs and IRS pairing rules are specific; verify with your employer, administrator, and current IRS Publications 502/969 guidance.