What Happens to My HSA If I Change Insurance?

When you change health insurance, the money in your HSA stays yours and stays usable; what changes is whether you can keep adding to it. The account is a personal financial account in your name, not a benefit tied to your old plan, so switching coverage never causes you to lose funds. New contributions are a different question. They depend on whether your new plan qualifies as a high deductible health plan under IRS rules, and on a few coverage overlaps that can quietly disqualify you.

The Account Itself Follows You

Unlike a Flexible Spending Account, which is tied to your employer’s plan year and generally forfeits unused balances, an HSA is a personal account that follows you through job changes, retirement, or any insurance switch.¹ Employer contributions already deposited into the account are yours too. If your employer negotiated lower custodian fees as part of a group arrangement, those discounts may disappear when you leave, but the balance is untouchable.

You can spend, save, or invest the funds regardless of your current coverage, and there is no deadline to use the money.

Whether You Can Keep Contributing

To put new money into an HSA, you need coverage under a high deductible health plan. For 2026, the IRS defines an HDHP as a plan with an annual deductible of at least $1,700 for individual coverage or $3,400 for family coverage, and total out-of-pocket costs (excluding premiums) no higher than $8,500 for an individual or $17,000 for a family.² If your new plan doesn’t meet those thresholds, you lose the ability to contribute. You can still spend what’s already in the account.

Not every high-deductible plan qualifies either. Some family plans use embedded deductibles that let individual family members meet a lower threshold before the plan starts paying, which can disqualify the plan even if the overall deductible looks high enough. Plans that cover certain services at no cost before you hit the deductible can also fail, unless that coverage is limited to preventive care the IRS specifically allows. The plan documents or your benefits administrator can confirm whether your coverage is HSA-compatible.

Bronze and Catastrophic Plans Now Count

Starting January 1, 2026, bronze and catastrophic health plans are treated as HDHPs for HSA purposes, even if they don’t meet the traditional deductible and out-of-pocket limits.³ Before this change, many bronze plan enrollees couldn’t contribute to an HSA because the plan’s structure didn’t fit the HDHP mold, even though the deductibles were often high in practice. The IRS clarified that the plan doesn’t have to be purchased through a government marketplace to qualify, so off-exchange bronze and catastrophic plans count too. If you’re switching to a bronze plan for 2026, your eligibility may have flipped.

Direct Primary Care Arrangements

The same 2026 legislation made direct primary care service arrangements compatible with HSA eligibility. If you enroll in a DPC arrangement alongside an HDHP, you can still contribute to your HSA and use the funds tax-free to pay periodic DPC fees.³ Before 2026, a DPC arrangement could be treated as disqualifying coverage.

What a Mid-Year Switch Does to Your Contribution Limit

For 2026, you can contribute up to $4,400 with individual HDHP coverage or $8,750 with family coverage. If you’re 55 or older, add another $1,000.² These limits include both your contributions and anything your employer puts in.

If you switch away from an HDHP partway through the year, your limit shrinks to reflect only the months you had qualifying coverage. Divide the annual limit by 12, then multiply by the number of HDHP-covered months. Someone with individual coverage through June who then moves to a non-qualifying plan could contribute about $2,200 for the year (6/12 of $4,400).¹

The Last-Month Rule

Switching the other direction, into an HDHP late in the year, has a special rule. If you have HDHP coverage on December 1 and keep that coverage through the entire following year (the “testing period”), you can contribute the full annual amount instead of a prorated share.¹ The downside is real. If you fail the testing period by dropping HDHP coverage before December 31 of the following year, the extra contributions you made beyond the prorated amount get added back to your taxable income, plus a 10% additional tax on that amount. Using the rule after a late switch assumes you’re going to stay in the HDHP.

Switches That Quietly Disqualify You

A plan change can create coverage overlaps that end your HSA eligibility without you noticing. The most common trap involves a spouse’s general-purpose FSA. If your spouse enrolls in a health FSA at work that can reimburse anyone in the family for any medical expense, the IRS treats you as having disqualifying coverage. You lose HSA eligibility even if you never submit a single claim to that FSA.¹

There are workarounds. A limited-purpose FSA that covers only dental, vision, or preventive care expenses won’t disqualify you. Some employers also allow employees to restrict their FSA so it reimburses only the employee’s own expenses, preserving the spouse’s HSA eligibility. If your household is juggling both, check the FSA’s summary plan description before open enrollment locks you in.

Medicare Enrollment Is the Big One

Once you’re enrolled in any part of Medicare, including Part A, your HSA contribution limit drops to zero.¹ You can still spend from the account, but no new money can go in. If you turn 65 mid-year, the limit is prorated for the months before Medicare starts.

The real gotcha is retroactive coverage. When you apply for Social Security benefits after age 65, you’re automatically enrolled in Medicare Part A, and that enrollment is backdated up to six months. You don’t get to opt out of the retroactive period. Any HSA contributions you made during those backdated months instantly become excess contributions, even though you had no way of knowing at the time. If you’re still working at 65 and want to keep contributing, delay both Social Security and Medicare enrollment until you leave your employer’s HDHP.

Fixing Over-Contributions After a Switch

Mid-year plan changes are the most common cause of excess HSA contributions. You contribute based on what you expect for the year, then your coverage changes and the math no longer works. If you don’t fix the overage, the IRS charges a 6% excise tax on the excess amount for every year it stays in the account.¹

The fix: withdraw the excess amount plus any earnings it generated before your tax filing deadline, typically April 15 of the following year. Contact your HSA custodian and specifically request an “excess contribution removal” so they code it correctly. The withdrawn earnings are taxable income for the year, but you avoid the ongoing 6% penalty. If you miss the deadline, the excise tax hits every year until you either pull the money out or have enough unused contribution room in a future year to absorb it. You report the penalty on Form 5329.

Spending the Balance Under the New Plan

Even if your new plan disqualifies you from contributing, every dollar already in the HSA remains available for qualified medical expenses tax-free. The IRS defines these broadly to include doctor visits, prescriptions, mental health care, dental and vision work, and many over-the-counter treatments. There’s no deadline and no annual forfeiture.

Health insurance premiums are generally not a qualified HSA expense, with a few exceptions worth knowing after a plan change. You can use HSA funds tax-free to pay for COBRA continuation coverage, health insurance premiums while you’re receiving unemployment benefits, qualified long-term care insurance (subject to age-based annual limits), and, once you turn 65, any health insurance premiums other than Medigap policies.⁴ That last category includes Medicare Part B and Part D premiums, which matters for anyone who switched to Medicare.

If you withdraw funds for anything other than a qualified expense before age 65, you’ll owe income tax on the amount plus a 20% additional tax.¹ After 65, the 20% penalty disappears and non-medical withdrawals are taxed as ordinary income. Disability eliminates the penalty at any age.

Moving the HSA to a Different Custodian

Changing insurance doesn’t require you to move your HSA, but you may want to if your new employer offers a different custodian with better investment options or lower fees. You have three choices.

A trustee-to-trustee transfer is the cleanest. Your new HSA provider contacts your old one and moves the funds directly. You never touch the money, so there’s no tax reporting, no risk of accidentally triggering a taxable event, and no limit on how many transfers you can do per year.¹ Start by asking your new provider for a transfer form. Some custodians charge a transfer-out fee, and the process can take a few weeks. Partial transfers are usually allowed if you want to split funds between providers.

A 60-day rollover means your old custodian sends the funds to you, and you have exactly 60 days to deposit them into another HSA. Miss the window and the entire amount counts as a taxable distribution, potentially with a 20% penalty if you’re under 65.¹ You’re also limited to one rollover every 12 months. There’s rarely a reason to choose this over a trustee-to-trustee transfer unless your custodian doesn’t support direct transfers.

Leaving the funds in place is also fine. The account doesn’t care who your insurer is. The main reason to consider moving is cost: some custodians charge monthly maintenance fees of a few dollars or more once employer subsidies end. Compare fees and investment menus before you consolidate.

Reporting It at Tax Time

A mid-year insurance change adds a layer to HSA tax reporting because you need to reconcile actual contributions against your prorated limit. You’ll file Form 8889 with your return to report contributions, calculate your deduction, and flag any excess. Your custodian sends Form 1099-SA for distributions and files Form 5498-SA with the IRS for total contributions. Employer and payroll contributions appear on your W-2 in Box 12 with code W; those already reduce your taxable wages, so you don’t deduct them again.

The most common mistake after a mid-year switch is forgetting to adjust contributions downward. If you contributed through payroll all year but only had HDHP coverage for eight months, the contributions for the remaining four months are excess. Catch this before your filing deadline and withdraw the overage to avoid the 6% excise tax.⁵ If you used the last-month rule to contribute the full annual amount, Form 8889 Part III is where you report the income and 10% additional tax if you failed the testing period.

1
Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
2
Internal Revenue Service. Notice 2026-5, Expanded Availability of Health Savings Accounts Under the One, Big, Beautiful Bill Act
3
Internal Revenue Service. Treasury, IRS Provide Guidance on New Tax Benefits for Health Savings Account Participants Under the One Big Beautiful Bill
4
Office of the Law Revision Counsel. 26 U.S. Code 223 – Health Savings Accounts
5
Internal Revenue Service. Instructions for Forms 1099-SA and 5498-SA (12/2026)