I Have Switched HSA Providers Twice
Once for a job change. Once because the new provider had better investment options. Both times I sat at my kitchen table with a beer. Wondering if I was about to mess up my taxes.
I have three kids. My family runs through $7,000+ a year in medical expenses. An HSA mistake is not abstract for me. A 6% excise tax on excess contributions is real money I would rather spend on diapers and pediatrician copays.
Here is the thing nobody tells you clearly when you change jobs. The money is yours. Always. But the math around what you can contribute that year gets weird fast.
The Part That Is Simple: You Keep the Money
Your HSA belongs to you. Not your employer. Not your old benefits provider. You.
When you leave a job, the balance does not disappear. It does not get clawed back. It does not have a vesting schedule like a 401(k). Every dollar in the account is yours the moment it lands.
You have three options for what to do with it.
- ●Leave it where it is. The old provider may charge a monthly fee once you are no longer an employee. Sometimes $3 to $5 a month. Worth checking.
- ●Transfer it to your new employer's HSA provider. This is a trustee-to-trustee transfer. More on that below.
- ●Transfer it to an HSA provider you pick yourself. Fidelity, Lively, HealthEquity. Whatever has the funds and fees you want. See the best HSA providers for the comparison.
I did option 3 the second time I switched. My new job's HSA provider had a 0.50% expense ratio on their target date fund. I moved everything to Fidelity. Same triple tax advantage. Better funds.
The Part That Gets Tricky: Mid-Year Contribution Math
This is one of the most common mistakes job-changers make.
The IRS does not care about your job. It cares about whether you had HDHP coverage on the first day of each month. Your annual contribution limit is calculated month by month.
Here is the basic formula. Each month of HDHP coverage equals 1/12 of the annual limit.
For 2026 the limits are $4,400 individual and $8,750 family. So each month of family coverage is worth $729.17 of contribution room. More on those numbers in the 2026 contribution limits post.
Say you had family HDHP coverage from January through June. Then you switched jobs in July to a non-HDHP plan. Your prorated limit looks like this.
6 months of HDHP coverage / 12 months in the year = 50%.
50% of $8,750 = $4,375.
That is your maximum HSA contribution for the year. Not $8,750. If you contributed the full annual amount through payroll before you left, you are now over the limit.
The penalty for going over is 6% per year. Every year the excess sits in the account. This is the mistake people make. They assume the limit travels with them. It does not. This is one of the common HSA mistakes to avoid.
The Last-Month Rule (And Why It Has a Trap)
Here is the IRS giving with one hand and warning with the other.
If you have HDHP coverage on December 1, the last-month rule kicks in. You can contribute the full annual limit for that year. Even if you only had coverage for one month.
Say you started a new job in November with an HDHP. Enrolled by December 1. You can contribute the whole $8,750 for family coverage. Not $729.17. The full amount.
This sounds amazing. It is amazing. But there is a string attached.
You have to stay HDHP-eligible through the entire next year. This is called the testing period. It runs from December 1 of the contribution year through December 31 of the following year. 13 months.
If you drop HDHP coverage during that testing period, the IRS claws back the difference. Contributions above what the prorated rule allowed get added back to your taxable income. Plus a 10% additional tax under IRC 223(b)(8)(B).
So the last-month rule is a real benefit. But only if you are confident you will keep HDHP coverage all of next year. If your employer is talking about switching plans, or you are thinking about a job change, be careful. I would not personally use the last-month rule unless I felt confident the HDHP coverage would stick for all 13 months. Run the math with a tax pro if you are unsure.
Trustee-to-Trustee Transfer: The One You Want
When I moved my HSA to Fidelity, I did a trustee-to-trustee transfer. This is the right way.
The two providers handle the move directly. The money never touches your bank account. No tax forms. No 60-day deadline. No risk of accidentally turning the move into a taxable event.
The other option is a rollover. That is when you withdraw the money yourself and redeposit it into a new HSA within 60 days. You only get to do this once per 12-month period. Miss the 60 days and the whole thing becomes taxable plus a 20% penalty if you are under 65.
Trustee-to-trustee transfers have no annual limit. You can do as many as you want. This is the answer. Fill out the new provider's transfer form. They handle it. Wait 2 to 4 weeks. Done.
The first time I transferred, I was nervous the entire time. I kept refreshing the new account dashboard. It took about three weeks. Then it just appeared. No tax form. No drama.
Employer Match Timing: The Money You Might Lose
If your old employer was contributing to your HSA, check the timing of those contributions before you give notice.
Some employers deposit a lump sum in January. That money is yours the moment it hits. No vesting.
Some employers deposit per pay period. When you leave, the contributions stop on your last paycheck. Whatever they had deposited so far is yours.
Some employers have wellness incentive contributions. $100 for completing a health risk assessment. $200 for an annual physical. Some of these have to be earned by a specific date to count for that year. If you are leaving in March and your physical was scheduled for May, that money goes away with you.
Worth knowing before you write the resignation email. Not worth changing the timing of a job change for $100. But if there is a $1,000 employer contribution that hits in two weeks? That might be worth it.
Read more about employer HSA contributions and how to find them if you have not checked yours yet.
What I Actually Did: A Walkthrough
The first time I changed jobs, here is what I did. Step by step. In case it helps.
- ●I checked my W-2 and pay stubs to see how much I had already contributed that year.
- ●I checked my new employer's plan to see if it was an HDHP. It was.
- ●I prorated my limit based on the months I had each plan. Easy because both were HDHPs. My total stayed at the family limit.
- ●I waited until I had HDHP coverage at the new job to start contributions through the new payroll.
- ●After about 6 months, I initiated a trustee-to-trustee transfer to consolidate.
- ●I kept every receipt from medical expenses during the transition period.
The receipt part matters. I had bills from both insurance plans during the transition. My family had a pediatrician visit two days before my last day at the old job. Then a kid got an ear infection a week into the new job. Different EOBs. Different network rates. Both eligible. Both saved.
If both jobs are HDHPs, prorated limits are not a real problem. The total is the same. The complication only kicks in if one job had an HDHP and the other did not.
What If My New Job Is Not an HDHP?
This is the scenario that trips people up the most.
You can still keep your HSA. You can still spend from it tax-free for qualified medical expenses. You can still invest the balance and grow it tax-free. The only thing you cannot do is keep contributing.
Your contribution limit for that year is prorated based on the months you had HDHP coverage. If you had it January through June, you get half the annual limit. If you had it January through October, you get 10/12.
After the HDHP coverage ends, you are done contributing for the year. Even if your new employer offers a 401(k) match, that does not give you more HSA room. The two accounts are separate.
If you maxed out before leaving and are now over the limit, withdraw the excess. You have until your tax filing deadline to do it. This avoids the 6% penalty. Call your HSA provider. They have a form for it. Most providers process excess contribution removals within 5 to 10 business days. The mechanics flow through Form 8889 at tax time, covered in the HSA Form 8889 guide.
What If My Spouse Has HDHP Coverage?
Here is one I had to look up myself.
If your spouse has family HDHP coverage that includes you, you might still be HSA-eligible. Even if your own employer's plan is not an HDHP. The IRS cares about whether you have HDHP coverage somewhere. Not whether it comes from your own employer.
You cannot have any disqualifying coverage. No general-purpose FSA. No regular PPO secondary coverage. No Medicare enrollment. But if your spouse's family HDHP is your only health coverage, you are still eligible.
This saved me stress when I thought about a hypothetical move to a non-HDHP employer. My wife's employer offers HDHP family coverage. We could have switched her plan and kept the HSA going.
If you and your spouse both have HSAs and family HDHP coverage, you split the family limit between you. Any ratio you want. Just make sure the total stays at or below $8,750 for 2026.
Common Mistakes I See People Make
Three patterns show up over and over.
1. Contributing to the new HSA without checking what already happened at the old job. Your annual limit is across all HSAs combined. Max out at the old job, then start contributing at the new job? You are over the limit.
2. Assuming the last-month rule is free money. If you cannot stay HDHP-eligible through the testing period, the IRS takes back what you over-contributed. Plus a 10% additional tax. The math has to work out.
3. Doing a 60-day rollover instead of a trustee-to-trustee transfer. Trustee-to-trustee is unlimited and safer. A rollover is once per year and risky. Pick the right one.
There are seven common HSA mistakes we cover in another post. The job-change excess contribution mistake is up there.
What I Would Do If I Was Changing Jobs Tomorrow
Five things, in order.
- ●Check my year-to-date HSA contributions across all accounts.
- ●Confirm whether my new plan is an HDHP.
- ●Calculate my prorated limit based on the months of HDHP coverage I will have.
- ●Set my new payroll contribution to land near that prorated amount, minus what was already contributed.
- ●Plan a trustee-to-trustee transfer to consolidate accounts after I am settled.
That is it. Five steps. About 30 minutes of math and one phone call to my new HSA provider. Run the final number by a tax pro if it is close to the limit.
The mistake people make is treating the HSA like a 401(k). The limit does not reset when you start a new job. It does not. The IRS is looking at the calendar year, not your employment. Once you understand that, the rest is just arithmetic.
See Where Your HSA Money Is Going
Tripl tracks every HSA expense and keeps a full reimbursement record. When you change jobs and switch providers, you still have years of receipts to manage. Tripl keeps them all in one place, regardless of which HSA bank holds your balance.
Frequently Asked Questions
Do I lose my HSA if I leave my job?
No. Your HSA is yours forever. It is not tied to your employer. You keep the balance. You can still spend it tax-free for qualified medical expenses. You can still invest it. The only thing that changes is whether you can keep contributing, which depends on your new health coverage.
What is the HSA contribution limit if I switch from family to individual coverage mid-year?
You prorate based on which coverage you had each month. Months on family coverage count toward the family limit. Months on individual count toward the individual limit. Add them together for your total. An HSA calculator or your provider can help with the math.
Can I contribute to two HSAs in the same year?
Yes. But the combined contributions across all accounts cannot exceed your annual limit. The IRS does not care how many HSAs you have. It cares about the total going in.
What happens if I accidentally over-contributed because of a job change?
Withdraw the excess (and any earnings on it) before your tax filing deadline. Call your HSA provider and ask for an excess contribution removal. This avoids the 6% annual excise tax. You will get a 1099-SA showing the corrective distribution.
Should I roll my old HSA into my new one?
Probably yes if the new provider has good investment options and lower fees. Use a trustee-to-trustee transfer, not a 60-day rollover. But there is no rule that says you have to consolidate. Some people keep multiple HSAs on purpose for different reasons.
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*Brandon Nied is the founder of Tripl. He is not a CPA, CFP, or licensed financial advisor. This post reflects research and personal experience tracking HSA expenses for a family of five. Always confirm tax positions with a qualified professional.*
*This is educational content, not financial or tax advice. Consult a qualified professional before making decisions about your HSA.*