Yes, but only if you move money into an interest-bearing or investment account

A Health Savings Account does not automatically earn interest just by sitting there. Most HSAs start with a cash holding account that pays nothing — zero percent. To earn interest or investment returns, you have to move your HSA balance into a separate savings account, money market fund, or investment option that your HSA provider offers. The money stays in your HSA; it just moves into a different bucket within it.

Think of it like a checking account at your bank. Your bank account itself is not an investment product. But your bank may let you move money from checking into a savings account or CD that earns interest. An HSA works the same way. Your HSA provider (usually a bank, insurance company, or third-party administrator) controls what options are available to you.

The amount of interest or return you earn depends entirely on which option you choose and current market conditions. A money market fund might earn 4 to 5 percent in a high-rate environment. A stock index fund inside an HSA could gain or lose 10 percent or more in a year. A savings account might earn 0.5 to 1 percent. You control the choice.

Key Takeaways

  • HSA cash holdings earn nothing by default; you must move money into a savings account, money market fund, or investment option to earn returns.
  • Your HSA provider determines which earning options are available, and these vary widely between banks, insurers, and administrators.
  • Interest or investment earnings stay inside your HSA and are not taxed, which is a major advantage over earning money in a regular savings account.
  • You can keep some money in cash for near-term medical expenses and move the rest into higher-earning options for long-term growth.

How HSA providers structure earning options

Most large HSA providers offer at least two tiers: a cash holding account and one or more investment options. Some offer only cash. Others offer a full menu of mutual funds, index funds, and money market options. The provider decides what to offer, so your options depend on who administers your HSA.

Common earning options include savings accounts (usually 0.5 to 2 percent), money market funds (typically 4 to 5 percent in current conditions), and investment funds ranging from conservative bond funds to aggressive stock funds. A few providers let you invest in individual stocks or ETFs, though this is less common.

Some HSA providers charge a monthly maintenance fee, an investment fee, or both. A $3 monthly fee on a $2,000 balance costs you 1.8 percent per year before you earn a single dollar. Check your provider's fee schedule before you move money into investments. The fee can wipe out the benefit of a low-interest savings account.

Interest earnings are tax-free inside an HSA

Any interest or investment gain you earn inside an HSA is not taxed. This is the biggest advantage of earning money in an HSA rather than in a regular savings account or brokerage account. If you earn $100 in interest in a regular savings account, you owe federal income tax on that $100. If you earn $100 in interest inside an HSA, you owe nothing.

This tax-free growth compounds over time. A $5,000 HSA balance earning 5 percent per year grows to $6,381 after five years, tax-free. The same $5,000 in a regular savings account earning 5 percent, taxed at a 24 percent federal rate, grows to only $6,095 after five years. The HSA version is $286 ahead because of the tax shield.

The tax-free treatment applies only to earnings on money you have already contributed. Your own contributions are not taxed whether they earn interest or not. But the earnings themselves — the interest, dividends, or capital gains — are sheltered from tax as long as the money stays in the HSA.

When to keep cash versus when to invest HSA money

If you expect to use your HSA balance for medical expenses within the next year or two, keep that money in cash or a money market fund. You need it to be available without delay and without the risk of a market downturn. A money market fund is a good middle ground: it earns more than a cash account but is still very stable.

If you have covered your near-term medical expenses and have extra HSA money sitting idle, moving it into a longer-term investment makes sense. Many people use an HSA as a retirement savings tool, treating it like a second 401(k). In that case, investing in stock index funds or balanced funds can make sense, because you will not need the money for 10, 20, or 30 years.

You can split your HSA balance across multiple options. Keep $2,000 in cash for this year's copays and deductibles, and move $8,000 into a money market fund or stock fund for long-term growth. You can move money between accounts within your HSA whenever you want, usually with no fee or delay.

How to move money into an earning account within your HSA

Log into your HSA provider's website or app and look for a "transfer" or "invest" button. Most providers let you move money between accounts instantly or within one business day. You will usually see a list of available options with their current interest rates or recent performance.

Select the account or fund you want to move money into, enter the amount, and confirm. The money leaves your cash holding account and enters the new account. You can reverse the move at any time by transferring money back to cash.

If your HSA provider does not offer investment options online, call their customer service line. Some smaller administrators require a phone call or written request to move money into investments. This is slower but still straightforward. Ask what options are available and what fees apply before you move anything.

What happens to HSA earnings if you withdraw money for medical expenses

If you withdraw money from an HSA for a may have access to medical expense, the earnings come out along with your contributions, and neither is taxed. This is true whether the earnings came from interest, dividends, or investment gains. You do not owe tax on the earnings because the withdrawal itself is tax-free.

If you withdraw money from an HSA for a non-medical reason before age 65, you owe income tax on the earnings portion of the withdrawal, plus a 20 percent penalty. The contribution portion is not taxed or penalized. For example, if you withdraw $5,000 and $500 of that is earnings, you owe income tax on the $500 plus a $100 penalty (20 percent of $500). The $4,500 contribution comes out tax-free.

After age 65, you can withdraw HSA money for any reason without the 20 percent penalty. You still owe income tax on the earnings portion if the withdrawal is not for a medical expense, but the penalty goes away. This makes an HSA a useful retirement savings tool.

Comparing HSA interest rates across providers

HSA interest rates and investment options vary widely. Some providers offer savings accounts earning 4 to 5 percent. Others offer only 0.01 percent. Some charge monthly fees that eat into earnings. Others charge nothing.

Before you open an HSA or move to a new provider, ask about the interest rate on the cash account, the investment options available, and all fees. A provider offering 4.5 percent with no fees is worth switching to if your current provider offers 0.01 percent and charges $3 per month.

You can compare providers using your employer's HSA plan options if you have a choice, or by visiting the websites of major HSA administrators like Fidelity, HealthEquity, Lively, or your bank. Most will show you current rates and available investments without requiring you to open an account first.

Frequently Asked Questions

Can I lose money if I invest my HSA in stock funds?

Yes. Stock funds and other investments can go down in value. If you invest $5,000 in a stock fund and the market drops 20 percent, your balance falls to $4,000. However, you can hold the investment until it recovers, or move the money back to cash at any time. Only use HSA investments for money you will not need for several years.

What is the difference between HSA interest and HSA investment returns?

Interest is a fixed rate paid by a bank or money market fund, usually 0.5 to 5 percent per year. Investment returns come from buying stocks, bonds, or funds that gain or lose value. Interest is predictable; investment returns are not. Both are tax-free inside an HSA.

Do I have to invest my HSA money, or can I just leave it in cash?

You can leave it in cash. Many people do, especially if they use their HSA to pay medical bills each year. Leaving money in cash means you earn nothing, but it also means you have no risk of losing value. The choice depends on whether you need the money soon and how much you value growth.

If my HSA provider does not offer investments, can I move my HSA to a different provider?

Yes. You can roll over or transfer your HSA balance to a different provider at any time. There is no tax or penalty. Contact the new provider and ask for a transfer form. They will handle moving the money from your old provider. This usually takes one to two weeks.

Are HSA earnings reported on my taxes?

No. HSA earnings are not reported on your tax return and you do not owe tax on them. Your HSA provider may send you a statement showing earnings, but you do not report this to the IRS. The tax-free treatment is automatic as long as the money stays in the HSA.