HSA Portability: What Happens When You Change Jobs

Health Savings Accounts carry a feature that distinguishes them from nearly every other employer-sponsored benefit: the account belongs to the individual, not the employer. When employment ends, the HSA balance, investment gains, and accumulated contributions move with the account holder — unconditionally. Understanding exactly how that portability operates, and what choices arise during a job transition, is essential for anyone using an HSA as part of a long-term financial strategy.

Definition and scope

HSA portability refers to the statutory guarantee that a Health Savings Account is owned by the individual who established it, not by the sponsoring employer. This guarantee is embedded in 26 U.S.C. § 223, the Internal Revenue Code section governing HSAs, which makes no provision for an employer to reclaim, freeze, or forfeit contributed funds upon termination of employment.

This stands in direct contrast to a Health Reimbursement Arrangement (HRA), where the employer owns and controls the account, and to a healthcare Flexible Spending Account (FSA), where unspent balances are typically forfeited at year-end or upon leaving employment. The portability distinction is explored further in the HSA vs. HRA comparison, which details the ownership structure differences between the two account types.

The scope of HSA portability covers:

The entire account balance at the time employment ends
All investment holdings within the HSA
Any interest or earnings accrued up to the date of departure
Employer contributions already deposited (regardless of any vesting schedule applied to other benefits like a 401(k))

Employer contributions to an HSA vest immediately upon deposit. There is no cliff or graded vesting schedule permitted under IRS rules — once funds are in the account, they belong to the account holder (IRS Publication 969).

How it works

When an employee separates from a job — whether through resignation, layoff, or retirement — the HSA does not close automatically. The account remains open at the existing trustee or custodian (typically the bank, credit union, or investment platform selected by the employer's plan). The account holder retains full access to the balance for qualified medical expenses without penalty.

Three operational changes occur upon leaving employer-sponsored HDHP coverage:

Contribution eligibility is suspended — New contributions to an HSA are permitted only while enrolled in a qualifying High-Deductible Health Plan. If the departing employee does not enroll in a new HDHP immediately, contributions must stop as of the last day of the month in which HDHP coverage ends (IRS Publication 969). Contributions made while ineligible are subject to income tax plus a 6% excise tax.
Administrative fees may increase — Many employers subsidize the monthly maintenance fees charged by the HSA custodian. After separation, the custodian may begin charging the account holder directly, typically ranging from $2.50 to $4.00 per month for basic custodial services, though fee structures vary by institution.
Payroll-deposit convenience ends — Pre-tax payroll contributions are no longer available. Future contributions, if the account holder re-enrolls in a qualifying HDHP, must be made directly and then claimed as an above-the-line deduction on Form 8889 when filing federal taxes.

The account holder also has the option to transfer the HSA to a new custodian — a process called a trustee-to-trustee transfer — which is not taxable and not limited in frequency, per IRS Notice 2004-2, Q&A 32. A rollover (where the account holder takes a distribution and redeposits within 60 days) is allowed once per 12-month period.

Common scenarios

Scenario A: New job with an HDHP option

An employee leaves one HDHP-sponsoring employer and joins another that also offers a qualifying HDHP. After enrolling in the new HDHP, the account holder may resume contributions up to the annual IRS limit. The HSA contribution limits page details the annual thresholds adjusted each year by the IRS. The existing HSA can be transferred to a new custodian preferred by the new employer, or it can remain at the original institution. There is no requirement to consolidate accounts.

Scenario B: New job with a non-HDHP plan

An employee moves to a position offering only a PPO or HMO with a deductible below the IRS minimum threshold. The existing HSA balance remains intact and fully accessible for qualified medical expenses tax-free. No new contributions are permitted while enrolled in the non-qualifying plan. The funds do not expire. This scenario is common when reviewing HDHP vs. PPO coverage options during a job change.

Scenario C: Gap in coverage (COBRA or uninsured period)

An account holder electing COBRA continuation of the former employer's HDHP may continue contributing to the HSA, provided the COBRA plan still meets IRS HDHP thresholds — a minimum deductible of $1,650 for self-only coverage and $3,300 for family coverage in 2025 (IRS Rev. Proc. 2024-25). Electing COBRA continuation of a non-HDHP plan suspends contribution eligibility.

Scenario D: Retirement

At age 65, HSA funds may be withdrawn for any purpose — not just qualified medical expenses — with no penalty. Withdrawals for non-medical purposes are subject to ordinary income tax but not the 20% penalty that applies before age 65 (IRS Publication 969). Medicare enrollment disqualifies an individual from making new HSA contributions, but the existing balance remains available for medical expenses tax-free, making the HSA a recognized retirement health cost vehicle. The full framework appears on the HSA as a retirement savings vehicle page.

Decision boundaries

The central decision upon leaving a job involves three variables: whether the new plan qualifies as an HDHP, whether to transfer the HSA to a new custodian, and whether to consolidate multiple HSA accounts.

Transfer vs. rollover:

Feature	Trustee-to-Trustee Transfer	60-Day Rollover
Tax reporting required	No	Yes (Form 1099-SA issued)
Frequency limit	Unlimited	Once per 12-month period
Risk of taxable event	None	High if deadline missed
Recommended for large balances	Yes	Generally no

For account holders managing HSA funds as part of a broader health-and-retirement strategy — including investment allocations described on HSA investment options and growth strategies — a trustee-to-trustee transfer is structurally safer than a rollover.

Custodian selection after job change:

The new employer's HSA custodian may offer fewer investment options or higher fees than an independent custodian. Account holders are not required to use the employer-designated custodian. Any HSA with an existing balance may remain at the original institution or be transferred to a custodian offering lower fees or broader investment menus, such as brokerage-linked HSAs that provide access to mutual funds or ETFs once the balance exceeds a threshold (commonly $1,000, though minimums vary by custodian).

Contribution timing and the last-month rule:

An account holder who gains HDHP eligibility mid-year may contribute the full annual amount under the "last-month rule" — provided HDHP enrollment is maintained through December 31 of the following year. Failing this testing period results in the excess contributions becoming taxable plus a 10% penalty. This timing risk is relevant specifically during job transitions that occur mid-calendar year.

For a foundational understanding of how HSA-eligible coverage is defined and structured, the HDHP Authority resource index provides an organized entry point to coverage rules, contribution mechanics, and qualifying plan criteria.

References

The law belongs to the people. Georgia v. Public.Resource.Org, 590 U.S. (2020)