Rules for Claiming HSA Expenses from Previous Years

If you've got money sitting in your Health Savings Account (HSA), you might be wondering if you can use it for expenses from last year—or even earlier? The short answer is yes, but there are a few important rules you need to follow to stay compliant with the IRS, and avoid tax issues. Once you understand how timing, documentation, and reimbursements work, you can unlock a lot of flexibility with your HSA funds.

Here's what we'll cover to show you how to do that:

• Can an HSA be used for previous year expenses?
• What are the rules around spending your HSA funds on prior years?
• How can I claim HSA expenses from previous years
• Are withdrawals from my HSA the same as reimbursements?
• Do I have to submit proof of receipts for eligible medical costs for HSA reimbursement?
• Can I throw out my receipts after I've received my HSA reimbursement?
• 15 HSA approved products you can spend your funds on

Let's start by answering some of the most common questions people have about using HSA funds for past expenses.

Can an HSA be used for previous year expenses?

Yes, you can use your Health Savings Account (HSA) to pay for or reimburse yourself for qualified medical expenses from previous years—but only if those expenses meet specific IRS requirements for HSAs. The key rule is relatively simple and straightforward: the expense must have occurred after you opened your HSA.

If that condition is met, there's no expiration date on when you can reimburse yourself.

For example, you opened your HSA in 2022. In 2026, you find two separate medical expenses, one from 2021 and one from 2024, neither of which have been previously claimed. You can reimburse yourself for the expense from 2024, but you are not able to reimburse yourself for the expense from 2021, as your HSA was not open at that time.

This flexibility is one of the biggest advantages of HSAs, because it allows you to:

• Let your HSA funds grow tax-free over time
• Invest your HSA funds, if you don't need access to the money right now
• Reimburse yourself strategically when you actually need the money
• Treat your HSA like a long-term financial tool, not just a spending account

What are the rules around spending your HSA funds on prior years?

When you use your Health Savings Account (HSA) for past expenses, you need to follow a few clear IRS rules. These guidelines help you stay compliant and make sure your HSA withdrawals remain tax-free.

Let's break down the most important rules you should know.

1. The expense must occur after you opened your HSA

This is the most important rule. If the medical expense happened before your HSA was established, it does not qualify. If it happened after, you can reimburse yourself at any time—even years later.

This means purchases you make prior to opening your HSA are not eligible. For this reason, opening an HSA earlier rather than later is a good idea, even if you don't plan on contributing a lot in your early years.

2. The expense must be HSA-eligible

Not every health-related purchase qualifies. HSA expenses must be eligible under IRS guidelines to count as qualified medical expenses.

3. You must have proof of the expense

You need to be able to back up that your HSA funds are going towards qualifying medical expenses. The IRS doesn't require you to submit receipts when you take a distribution, but they can request proof in an audit. It's always best to keep records of your expenses that include the date of the service, the type of expense, the amount paid, and proof of payment.

If you aren't able to prove a medical expense, it may be treated like a taxable withdrawal.

4. You can only reimburse yourself once

This may seem obvious, but you aren't allowed to double dip to gain another tax benefit. If you've claimed the expense elsewhere, you aren't able to expense it through your HSA.

5. There is no deadline, but strategy matters

One of the biggest advantages of HSAs is flexibility. There is no time limit for reimbursing yourself, which means you can delay reimbursement to let your HSA balance grow tax-free.

Many people choose to pay out of pocket now and reimburse themselves later when they need extra cash. This strategy can turn your HSA into a long-term financial tool instead of a short-term spending account.

How can I claim HSA expenses from previous years?

If you paid for a qualified medical expense out of pocket in a prior year, you can reimburse yourself from your Health Spending Account at any time—as long as you follow the correct steps. The process is straightforward, but staying organized makes it much easier.

Here's how you can claim those past expenses in a compliant way:

Step 1: Confirm the expense is eligible

Before you do anything, make sure the expense qualifies under IRS rules. Ask yourself:

• Was the expense incurred after I opened my HSA?
• Is it considered a qualified medical expense?
• Did I pay for it out of pocket (not with another tax-advantaged account)?

If the answer is yes to all three, you're good to move forward.

Step 2: Locate your documentation

You'll need proof of the expense, even if you're not submitting it right away. Gather:

• Itemized receipts or invoices
• Explanation of Benefits (EOB), if applicable
• Proof of payment (credit card or bank statement)
• Letter of Medical Necessity (LMN) if it was required for the purchase to be HSA eligible

Keeping digital copies can make this step much easier, especially if you plan to reimburse yourself years later.

Step 3: Decide how much to reimburse yourself

You don't have to reimburse the full amount all at once. You can:

• Reimburse the full expense in one withdrawal
• Reimburse partial amounts over time
• Wait until you actually need the money

For example, if you had a $2000 medical bill from a few years ago, you could reimburse $500 now, and the rest later.

Step 4: Take a distribution from your HSA

Once you're ready, log into your HSA provider's portal and request a distribution. You can typically:

• Transfer funds to your bank account
• Use an HSA debit card (for current expenses)
• Request a check

When you take the distribution, you're essentially paying yourself back.

Step 5: Record the transaction for your taxes

When tax season comes around, your HSA provider will send you Form 1099-SA, which shows your total distributions. You'll need to:

• Report the distribution on your tax return
• Confirm that it was used for qualified medical expenses

As long as everything qualifies, you won't owe taxes on that amount.

Are withdrawals from my HSA the same as reimbursements?

It's easy to think withdrawals and reimbursements are the same thing, but there's an important distinction you should understand when using your HSA. Both involve taking money out of your HSA—but how and why you do it matters for staying compliant and organized.

• HSA withdrawal: A withdrawal simply means you're taking money out of your HSA. This could include paying for a current medical expense, transferring money to your bank account, or using your HSA debit card at checkout.
• HSA reimbursement: A reimbursement is a specific type of withdrawal. It happens when you previously paid for a medical expense out-of-pocket and you later withdraw HSA funds to pay yourself back.

In other words, every reimbursement is a withdrawal—but not every withdrawal is a reimbursement. Understanding the difference helps you manage your records and avoid confusion during tax season.

Do I have to submit proof of receipts for eligible medical costs for HSA reimbursement?

One of the most common questions people have about Health Savings Accounts (HSAs) is whether you actually need to submit receipts when you reimburse yourself. The simple answer is you don't need to submit documentation each time you take a reimbursement. You're responsible for ensuring the expense is eligible.

While the IRS doesn't require you to submit proof for each HSA reimbursement, they can audit you at any time to verify purchases you've made are legitimate. For this reason, it's important to keep documentation that proves what the expense was for, when you received services, the amount you paid, and proof of purchase.

If you're unable to prove this was a medical expense, the IRS may treat your reimbursement as a non-qualified withdrawal, which means it would be subject to taxes and potential penalties.

The best way to think of it is self-managed compliance. You manage what you claim yourself, as well as the withdrawals. You're incentivized to follow the rules because you'll end up being taxed and charged a penalty on any expenses that shouldn't have qualified, negating the tax-advantaged benefit the account provides.

Can I throw out my receipts after I've received my HSA reimbursement?

No, you'll want to keep all documentation related to HSA payments for your records. While you manage the withdrawals yourself and don't need to provide documentation at the time of reimbursement, you still need to be able to provide proof the purchase qualifies in the event that you're ever audited by the IRS.

If you're unable to verify this expense during an audit, the IRS may treat the withdrawal as taxable income and apply a penalty fee.

There is no official rule on how long you should keep your records, but it's best practice to keep tax documents for 3 to 7 years for the time you expense them.

15 HSA qualifying products you can spend your funds on

If you're effectively managing the funds in your HSA, you might be wondering if there are any useful products you can use your HSA on to gain the benefits of using those pre-tax dollars. In the Flex Marketplace, we've collected hundreds of eligible products that go beyond doctor visits and prescriptions. Many everyday health and wellness items qualify, making it easier to use your HSA funds in practical ways.

Let's look at some popular categories and examples:

Products for you & your home

These are some of the most common items you can purchase with your HSA. These products are easy to stock up on and are almost always eligible. Things like first aid kits, bandages and wound care supplies, sunscreen, thermometers, blood pressure monitors, at-home diagnostic tests.

Product	Description
	Kindred Bravely Kindred Bravely offers maternity and postpartum clothing designed for comfort and functionality.
	Sky and Sol Sky and Sol creates mineral-based sunscreens and skincare products.
	Ever Ready First Aid Ever Ready First Aid provides first aid kits and emergency preparedness supplies.

Pain relief and recovery products

If you deal with soreness, injuries, or chronic discomfort, many recovery tools qualify.

Product	Description
	Hyperice Hyperice develops advanced recovery and wellness technology.
	Chirp Chirp offers wellness products for back and muscle recovery.
	Therabody Therabody develops recovery devices focused on muscle relief.

Vision

You can also use your HSA funds for many vision-related expenses.

Product	Description
	Pair Eyewear Pair Eyewear offers customizable prescription glasses.
	WMP Eyewear WMP Eyewear sells affordable modern eyewear.
	Stoggles Stoggles sells stylish protective eyewear.

Family and baby care products

If you have children, there are several HSA-eligible products that can support their health.

Product	Description
	Tubby Todd Tubby Todd offers gentle skincare for babies.
	Nanit Nanit creates smart baby monitors.
	MomCozy MomCozy offers products for pregnancy and early parenting.

Over-the-counter medications

Many OTC medications are now eligible without a prescription.

Product	Description
	Wellspring Meds Wellspring Meds focuses on everyday relief products.
	Jase Medical Jase Medical provides emergency preparedness medical kits.
	Ikigai Cases Ikigai Cases offers portable pill organizers.

Final thoughts: make the most of your HSA funds—past and present

Using your Health Savings Accounts (HSAs) for previous year expenses gives you a level of flexibility that few other financial tools offer. As long as your expense is qualified, incurred after your HSA was opened, and properly documented, you can reimburse yourself on your own timeline.

This means you're not locked into using your funds right away. You can let your balance grow, then tap into it later when it makes the most sense for your financial situation.

At the same time, staying organized is key. Keeping receipts, tracking expenses, and understanding the rules helps you avoid issues and keeps your withdrawals tax-free.

If you'd rather skip the hassle of tracking reimbursements altogether, there's an easier path. The Flex Marketplace gives you a simple way to spend your HSA funds instantly across hundreds of eligible products—all in one place.