Open enrollment is the one window each year where your HSA decisions get locked in. Choose wrong and you could lose a full year of tax-free contributions. Choose right and you set yourself up for thousands in tax savings.
Here are the eight decisions to get right before the deadline.
Verify your plan is HDHP-eligible
You can only contribute to an HSA if you have a qualifying High Deductible Health Plan. For 2026, the minimum deductible is $1,650 (self-only) or $3,300 (family), and the maximum out-of-pocket is $8,300 (self-only) or $16,600 (family). If your employer's plan does not meet these thresholds, you cannot contribute to an HSA - period. Check the Summary of Benefits document for your plan.
Set your contribution amount to the max
The 2026 limits are $4,300 (self-only) or $8,550 (family). If you are 55 or older, add $1,000. Divide by the number of pay periods remaining and set your payroll deduction. Payroll contributions save you FICA taxes (7.65%) on top of federal and state income tax - that is an extra $329 on a maxed self-only HSA that you would not get with direct contributions. See current limits.
Check for FSA conflicts
You cannot have a general-purpose Flexible Spending Account and an HSA at the same time. If your employer offers both, make sure you are NOT enrolling in a traditional FSA. This is the most common mistake during open enrollment - one checkbox can disqualify you from HSA contributions for the entire plan year. See the full HSA vs FSA breakdown.
Consider an LPFSA pairing
A Limited Purpose FSA covers only dental and vision expenses and is fully compatible with your HSA. If your employer offers one, enrolling lets you shelter an additional $3,300 (2026 limit) in pre-tax money specifically for dental and vision. Your HSA handles everything else. It is the most underused tax optimization in employer benefits.
Choose self-only vs. family coverage
If you are adding dependents, switching to family HDHP coverage unlocks the higher HSA contribution limit ($8,550 vs. $4,300). Run the numbers: the higher premium for family coverage might be offset by the additional $4,250 in tax-deductible HSA space. At the 22% bracket, that extra contribution saves $935 in federal taxes alone.
Designate a beneficiary
Log into your HSA provider's website and name a beneficiary. If your spouse is the beneficiary, they inherit the HSA as their own - same triple tax advantage. If anyone else inherits it, the account is liquidated and taxed as income in the year of death. This takes two minutes and most people never do it.
Review your investment allocation
Open enrollment is a good time to check your HSA investment setup. Is your balance invested or sitting in cash? Is your cash threshold still appropriate? Do your fund choices still make sense? If you have been putting this off, do it now. See our HSA investment guide.
Set up expense tracking
If you plan to use the shoebox strategy - paying medical expenses out of pocket and letting your HSA grow - you need a system to track every receipt. Start now so you do not lose documentation for expenses that happen in January. HSA Trackr gives you a timestamped record from day one.
The Open Enrollment Cheat Sheet
| Decision | Right Move | Common Mistake |
|---|---|---|
| Plan type | HDHP with HSA eligibility | Picking a traditional plan and losing HSA access |
| Contribution | Max it out via payroll | Setting a "comfortable" amount below the limit |
| FSA | Decline general FSA (or pick LPFSA only) | Accidentally enrolling in both |
| Beneficiary | Spouse named | No beneficiary designated |
| Investments | Cash threshold + index fund | 100% cash |
Open enrollment lasts a few weeks but the impact lasts all year. Verify HDHP eligibility, max your contribution via payroll, avoid FSA conflicts, pair an LPFSA if available, and set up tracking. Get these eight decisions right and you maximize every dollar of your HSA's tax advantage.
This content is for educational purposes only and is not tax, legal, or financial advice. Consult a qualified tax professional for guidance specific to your situation.