Is HSA Interest Taxable in California?

Many California residents are curious about whether the interest earned on their Health Savings Account (HSA) is taxable in the state. Let's dive into this topic to provide clarity on how HSA interest is treated in California.

An HSA is a tax-advantaged savings account that allows individuals to save for medical expenses while enjoying certain tax benefits. Contributions to an HSA are tax-deductible, and the funds in the account can grow tax-free through investment.

When it comes to the interest earned on an HSA in California, the general rule is that:

  • Interest earned on HSA funds is tax-free at both the federal and state levels as long as the money is used for qualified medical expenses.
  • However, if you withdraw HSA funds for non-qualified expenses, the interest earned on those funds may be subject to income tax and an additional 20% penalty at the federal level.
  • California conforms to the federal tax treatment of HSAs, meaning that HSA contributions, earnings, and withdrawals for qualified medical expenses are also tax-free at the state level.

It's important to keep detailed records of your HSA transactions to ensure that you can provide proper documentation if needed. By using your HSA funds for qualified medical expenses, you can enjoy the tax benefits of these accounts without worrying about additional taxation on the interest earned.


As a California resident, understanding the tax implications of your Health Savings Account (HSA) is crucial. Many people wonder whether the interest accrued in their HSA is subject to taxation. Fortunately, interest earned on HSA funds remains tax-free at both federal and state levels when used for qualified medical expenses.

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