FSA vs. HSA: What’s the Difference?

Q: Can I have both an FSA and an HSA?

Sometimes—depending on your plan—but only certain types of FSAs are allowed alongside HSAs.

Q: Do both accounts let me buy prescription sunglasses?

Yes, prescription sunglasses are eligible under both FSAs and HSAs.

Q: Which account is better for long-term savings?

HSAs. They roll over every year and can grow tax-free.

Q: Are contribution limits different between FSAs and HSAs?

Yes—HSA limits are typically higher.

Flexible spending accounts (FSA) and health savings accounts (HSA) both allow you to set aside money (before taxes) for specific health care expenses, like prescription eyewear and eye exams, but there are some key differences between them.

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FSA vs. HSA: What’s the Difference?

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FSA vs. HSA

Health Savings Accounts:

Roll over unused contributions year after year
Can still be used after termination of employment
Must accompany a high-deductible health insurance plan (individual or through an employer)
Allow withdrawals with a 10% penalty fee
Have a higher contribution maximum than FSAs

Flexible Spending Accounts:

Typically require contributions to be used by the end of the year
Can no longer be accessed after termination of employment
Must accompany group insurance through an employer
Don’t allow withdrawals

FSA vs. HSA

Health Savings Accounts:

Roll over unused contributions year after year
Can still be used after termination of employment
Must accompany a high-deductible health insurance plan (individual or through an employer)
Allow withdrawals with a 10% penalty fee
Have a higher contribution maximum than FSAs

Flexible Spending Accounts:

Typically require contributions to be used by the end of the year
Can no longer be accessed after termination of employment
Must accompany group insurance through an employer
Don’t allow withdrawals

When an FSA Makes Sense

An FSA tends to fit people who:

Don’t have a high-deductible health plan
Prefer employer-managed benefits
Expect predictable healthcare or vision expenses each year
Want to save pre-tax dollars on prescription eyewear

The main tradeoff: FSAs typically expire each year (with a possible grace period or small rollover).

Four ways to use your FSA or HSA

Prescription eyeglasses

Prescription sunglasses

Contacts

Eye exams

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Prescription eyeglasses

Prescription sunglasses

Contacts

Eye exams

When an HSA Makes Sense

HSAs are a good match if you:

Are enrolled in a high-deductible health plan
Want funds that roll over forever
Want the option to invest unused money
Prefer more control and flexibility

For vision care purchases, HSAs offer the advantage of long-term savings and no deadlines.

When an HSA Makes Sense

HSAs are a good match if you:

Are enrolled in a high-deductible health plan
Want funds that roll over forever
Want the option to invest unused money
Prefer more control and flexibility

For vision care purchases, HSAs offer the advantage of long-term savings and no deadlines.

Using Either Account at Warby Parker

No matter which account you have, you can use it on:

Prescription glasses
Prescription sunglasses
Contact lenses
Eye exams
Lens upgrades

Both cards typically process like debit cards at checkout. If not, you can submit your receipt for reimbursement.

Which One Saves You More on Vision Care?

It depends on your plan—but generally:

FSAs may help with predictable annual expenses (like annual contacts or a new pair of glasses).
HSAs offer greater long-term tax advantages, especially if you keep a balance year-to-year.

Whichever account you use, buying prescription eyewear with pre-tax dollars is almost always the most cost-effective option.

A woman playfully holds several pairs of glasses in front of her face against a blue background.

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FAQ's

Which is better for buying glasses—an FSA or HSA?

Both work for prescription eyewear. HSAs offer rollover flexibility; FSAs may be better if you don’t have an HDHP.