FSA and HSA Basics

How the accounts work: contributions, deadlines, HDHP pairing, job changes.

Most people set up an FSA or an HSA once during open enrollment and then never look at it again. That is where the money goes missing. The two accounts share a name and almost nothing else.


An HSA is yours. It rolls over every year, it follows you between jobs, it can be invested, and it pairs only with a high deductible health plan. An FSA belongs to your employer’s plan year. It usually does not roll over, which is where the use-it-or-lose-it pressure comes from, and it is the one with the March deadline that catches people every spring.


The guides in this topic cover the mechanics: how much to put in, what happens to the balance when you leave a job, whether you can spend it on a spouse or a parent, and when it is smarter to leave an HSA invested than to spend it.


None of it requires a benefits background. It requires knowing which of the two accounts you have.

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