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What Is a Limited Purpose FSA, and Why Should I Care?

Writer: Gil Mahler
Gil Mahler
4 days ago
2 min read

If you have a Health Savings Account (HSA), you might think you can't have a Flexible Spending Account (FSA) too. With a regular FSA, that's true. But there's a special kind of FSA that works side by side with an HSA. It's called a Limited Purpose FSA.

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What is it?

A Limited Purpose FSA is an FSA that only pays for dental and vision costs. Things like:

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  • Dental cleanings, fillings and braces

  • Eye exams

  • Glasses and contact lenses

  • Some eye surgeries, like LASIK

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Some plans also pay for medical costs after you meet your deductible. Check your plan to see what yours covers.

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Why does it exist?

The rules say you can't add to an HSA if you have other health coverage, and a regular FSA counts. But a Limited Purpose FSA only covers dental and vision, so it doesn't break the rule.

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That means you can use both accounts at once.

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Why should you care?

Using both accounts helps you save more on taxes and keep your HSA growing. Here's a simple plan:

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  1. Use your Limited Purpose FSA for dental and vision costs you know are coming.

  2. Leave more money in your HSA so it can keep growing for the future.

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Your FSA covers the predictable stuff. Your HSA becomes your long-term savings.

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How it works

It works just like a regular FSA:

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  • You pick an amount during open enrollment. For 2026, the limit is $3,400.

  • The money comes out of your paycheck before taxes.

  • Your full amount is usually ready on day one.

  • It's "use it or lose it," so plan carefully.

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Meet Chloe

Chloe has an HDHP and an HSA. This year, her daughter needs braces, and Chloe needs new glasses. That's about $2,500 in dental and vision costs.

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Chloe puts $2,500 in a Limited Purpose FSA to cover them. She still puts money in her HSA too. Instead of draining her HSA on braces, she keeps that money invested for later.

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Is it right for you?

A Limited Purpose FSA might be a good fit if you:

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  • Have an HSA

  • Have dental or vision costs you can plan for

  • Want to keep more money growing in your HSA

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It's also a great fix if your spouse has an HSA. If you switch from a regular FSA to a Limited Purpose FSA, your spouse can keep adding to their HSA.

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Key takeaways

  • A Limited Purpose FSA pays for dental and vision costs.

  • Unlike a regular FSA, you can have one at the same time as an HSA.

  • Use it for planned dental and vision costs, and let your HSA keep growing.

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