HSA Guide to Triple-Tax Advantage + Strategy for Reimbursement (2025 Update)

HSA Eligibility

Individuals covered by an HSA-eligible high-deductible health plan are eligible to contribute to an HSA.

2025 HSA Contribution Limits

In 2025, an eligible individual can contribute up to $4,300 to an HSA. Individuals age 55 or older can contribute an additional $1,000.

Eligible individuals with family coverage can collectively contribute up to $8,550 to an HSA. This total can be deposited into one HSA or split between both spouses’ HSA accounts.

Employer HSA matches count toward these totals.

Source: 2025 Important Planning Numbers

HSA Triple-Tax-Advantage

When it comes to tax benefits, no other savings vehicle offers the triple tax-advantage found from HSAs.

Pre-Tax Contributions

Contributions to an HSA are made on a pre-tax basis.

Tax-Deferred Growth

HSA accounts grow on a tax-deferred basis.

Once an HSA balance exceeds $1,000, plans generally allow individuals to invest funds and enjoy tax-deferred growth. Many employer HSAs offer a menu of investment options like a 401(k) plan, while other HSAs provide more extensive choices beyond that.

HSA funds are not use-it-or-lose-it. Unused HSA assets roll over automatically each year, and they are portable, allowing for transferring to other custodians.

Tax-Deferred Growth

Withdrawals from an HSA are tax-free when used for qualified medical expenses, such as prescription medications, doctor visits, and long-term care insurance premiums.

Example of HSA Triple-Tax Advantage

Kelly (48) and her husband Eric (50) are enrolled in an HSA eligible high-deductible health plan.

Kelly contributes $7,050 throughout the year and receives an employer match of $1,500 to max-out her HSA. Kelly and Eric are in the 32% federal tax-bracket. By maxing out an HSA, not only do they save tax-efficiently for retirement, but they also save over $2,000 in taxes by reducing their taxable income.

Kelly chooses to invest her HSA for long-term growth once it’s over the $1,000 required minimum. Similar to an IRA or 401(k), investments within the HSA grow tax-deferred.

Because Kelly and Eric accrue qualified medical expenses and keep their receipts, they do not owe taxes down the road when they distribute HSA funds.

Important HSA Considerations

An HSA is Not For Everyone

While saving with an HSA can be a smart financial move for many, it’s important to note that it’s not for everyone. To contribute to an HSA, you must enroll in a high-deductible health plan. Those facing complex healthcare needs, prefer traditional health plans, are already Medicare enrollees, or are in large families frequently visiting the doctor might find that high-deductible health plans are not a good fit.

Reimbursements in the Future vs. in the Present

As of 2025, there’s no deadline for reimbursement. Consider paying for qualified medical expenses out-of-pocket if there is an established adequate emergency fund in place. Having a growing bucket of tax-advantaged funds available for reimbursement is a significant advantage for HSAs over other investment account types.

It’s critical to retain receipts for qualified medical expenses. Some HSAs ask for submitting receipts through their platform. It’s also wise to keep digital copies to account for potentially switching HSA custodians in the future.

Withdrawals for Non-Qualified Medical Expenses

After reaching age 65, non-qualified HSA withdrawals are taxed as ordinary income.

Before reaching age 65, non-qualified HSA withdrawals are taxed as ordinary income plus a 20% tax penalty.

Inheriting an HSA

Spouses inheriting an HSA receive the account with no tax implications.² Non-spouses inheriting an HSA must distribute the funds and pay ordinary income tax rates based on the distribution.²

Example of HSA Reimbursement in the Present vs. Future

Kendall (45) is enrolled in an HSA-eligible high-deductible health plan in 2025 and contributes $4,300 to his HSA. His HSA allows him to invest the entire balance once it exceeds $1,000. Kendall has an adequate emergency fund and can afford to pay medical expenses out of pocket.

In 2025, Kendall incurs $4,300 in qualified medical expenses and is deciding whether to reimburse himself from the HSA immediately or pay out of pocket and reimburse from the HSA in the future. If Kendall chooses to wait, he estimates a 10% annual rate of return on his investments and anticipates needing the funds when he reaches age 85 in 2064.

In 2026, Kendall switches to a health plan that makes him ineligible for future HSA contributions.

By waiting until age 85 to reimburse himself, Kendall’s $4,300 contribution in 2025 grows to $194,614.77. Over this period, Kendall saves additional receipts for qualified medical expenses, allowing him to reimburse himself tax-free in the future.