HSA vs 401(k)
Last updated July 2026
HSA (Health Savings Account)
The triple-tax-advantaged health investment account
Advantages
- Triple tax advantage: pre-tax in, tax-free growth, tax-free out for medical
- After age 65, funds can be withdrawn for any purpose (taxed as income)
- Portable between jobs, always yours
- Can be invested for long-term growth
- No required minimum distributions in retirement
Drawbacks
- Requires enrollment in an HDHP
- Contribution limit only $4,300 / $8,550 (family)
- Non-medical withdrawals before 65 incur a 20% penalty
- No employer match structure like 401(k)
401(k)
The workhorse employer retirement account with high limits and employer match
Advantages
- High contribution limit ($23,000 individual / $30,500 age 50+ in 2026)
- Employer match is effectively free money
- Reduces taxable income now (traditional) or grows tax-free (Roth)
- Auto-enrollment and payroll deductions make consistency easy
- Long-term compounding in a broad investment lineup
Drawbacks
- Only two tax advantages (pre-tax in and tax-deferred growth for traditional; or after-tax in and tax-free growth for Roth)
- Withdrawals in retirement are taxed as income (traditional)
- 10% penalty for early withdrawals before 59½
- Investment lineup limited to employer plan menu
HSA and 401(k) both offer powerful tax advantages, but with different structures. A 401(k) is the workhorse retirement account with high contribution limits and often an employer match. An HSA has lower limits but a genuinely unique triple tax advantage. Fund order matters, and for many eligible savers, the HSA should come after the 401(k) match but before the rest of the 401(k).
Feature Comparison
| Feature | HSA (Health Savings Account) | 401(k) |
|---|---|---|
| Annual Contribution Limit | $4,300 individual / $8,550 family (2026) | $23,000 individual / $30,500 age 50+ (2026) |
| Rollover Rules | Unlimited, rolls over forever | Rollover to IRA or new employer 401(k) available |
| Account Ownership | You own it; portable | You own it; portable via rollover |
| Investment Options | Yes, stocks, bonds, mutual funds | Yes, employer plan investment menu |
| Tax Advantage | Triple tax advantage | Traditional (pre-tax in) or Roth (tax-free out) |
| Eligibility | Must be enrolled in an HDHP | Available at employers offering a 401(k) |
| Withdrawal Rules | Tax-free for medical; any purpose after 65 (taxed) | 10% penalty before 59½; RMDs starting at 73 |
| Retirement Use | After 65: any purpose (taxed as income) | Full withdrawals in retirement (taxed for traditional) |
Too Close to Call
Fund 401(k) up to the employer match first (free money). Then max the HSA if you're eligible. Then return to the 401(k) to fill remaining contribution room.
The classic priority order for eligible savers: (1) 401(k) up to employer match, always, (2) HSA to the annual limit ($4,300/$8,550), (3) 401(k) back up to the annual max, (4) Roth IRA, (5) taxable brokerage. The HSA's triple tax advantage plus its ability to function as a stealth retirement account after 65 makes it more tax-efficient dollar-for-dollar than a 401(k). But 401(k) limits are 5-6x higher, so most people will still contribute more to the 401(k) in absolute dollars.
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