Most employers run open enrollment in October or November for benefits that start January 1. That window is the one opportunity per year to change your health plan, adjust your coverage, and elect accounts like an FSA or HSA. Most people spend five minutes clicking through the same elections as last year. The Health Savings Account is the one item most worth stopping for — and the one that gets glossed over most often.
For 2026, the HSA contribution limits are $4,300 for individual coverage and $8,550 for family coverage. Workers 55 and older can add another $1,000 as a catch-up contribution. To contribute to an HSA, you must be enrolled in a qualifying High Deductible Health Plan — the HDHP option your employer likely offers alongside a traditional plan. If you are, the HSA is one of the few accounts in the tax code with three simultaneous advantages that no other account matches.
Most tax-advantaged accounts give you one benefit. A traditional 401(k) lets you contribute pre-tax, reducing your taxable income now. A Roth IRA lets you contribute after-tax and withdraw tax-free later. The HSA does both — contributions are pre-tax (or tax-deductible if made directly), growth inside the account is tax-free, and withdrawals for qualifying medical expenses are also tax-free. That’s three separate tax benefits on the same dollar, which is why financial planners sometimes call it the best account in the tax code.
The qualifying expense list is broader than most people realize. Prescriptions, dental work, vision care, mental health services, and certain over-the-counter items are all eligible. If you pay medical bills from a checking account and let the HSA grow invested, you can reimburse yourself years later — there’s no time limit on reimbursements as long as the expense occurred after you opened the account. Some people use this as a deferred reimbursement strategy: pay out of pocket for years, keep receipts, and withdraw a large tax-free sum in retirement.
Flexible Spending Accounts (FSAs) are the other pre-tax healthcare account employers offer. The critical difference: FSAs have a “use it or lose it” rule — funds must generally be spent by year-end (with a small grace period or carryover depending on the plan). HSAs have no such restriction. Balances carry forward year after year indefinitely, can be invested, and belong to you permanently even if you switch jobs or retire. If you’re healthy and can absorb the higher deductible of an HDHP, choosing the HSA-eligible plan and maxing the contribution is often the better long-term financial decision.
At 35, maxing an HSA at $4,300/year in an index fund averaging 7% annual returns, with minimal withdrawals, produces roughly $245,000 by age 65. That’s a tax-free medical expense fund for retirement, the period of life when healthcare costs are highest. If you stay healthy and don’t need much medical care between now and then, the compounding effect is substantial — all without paying income tax on a dollar of it.
No. HSA eligibility requires enrollment in a qualifying High Deductible Health Plan. You can open an HSA through a provider like Fidelity or Lively independently, but you can only contribute to it if your current health coverage is an HDHP. If your employer only offers traditional plans, you’re not eligible to contribute during that period of coverage.
Your existing HSA balance stays in your account and continues to grow and be available for qualified medical expenses. You just can’t make new contributions while covered by a non-HDHP plan. The account is yours permanently — it doesn’t disappear when your coverage changes.
Elect the HDHP and set your HSA contribution amount during open enrollment. If your employer contributes to your HSA (many do — check your benefits materials), that contribution counts toward your annual limit. Set your own election to fill the gap to the maximum. Spreading contributions evenly across 26 bi-weekly paychecks is the simplest approach.
