How to Calculate HSA Contribution Limits
A Health Savings Account (HSA) is one of the most tax-advantaged accounts available: contributions are pre-tax, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. To contribute, you must be enrolled in a High-Deductible Health Plan (HDHP).
2024 Contribution Limits
| Coverage Type | Contribution Limit |
|---|---|
| Self-only HDHP | $4,150 |
| Family HDHP | $8,300 |
| Age 55+ catch-up | +$1,000 |
HDHP Requirements (2024)
To qualify, your health plan must have:
- Minimum deductible: $1,600 (self-only) or $3,200 (family)
- Maximum out-of-pocket: $8,050 (self-only) or $16,100 (family)
Pro-Rating for Partial Year Eligibility
If you gained or lost HDHP coverage mid-year, you must pro-rate your contribution limit. The "last-month rule" lets you contribute the full annual amount if you're eligible on December 1—but you must remain eligible through the following year (testing period), or you'll owe tax and a 10% penalty on the excess.
Example (pro-ration): You enrolled in self-only HDHP on May 1 (8 months of eligibility). Prorated limit: ($4,150 / 12) × 8 = $2,767
Triple Tax Advantage
- Deduction: Contributions reduce taxable income
- Growth: Investments in the HSA grow tax-free
- Withdrawals: Tax-free for qualified medical expenses
After age 65, non-medical withdrawals are taxed like Traditional IRA distributions (no penalty).
Use our HSA contribution calculator to determine your limit and optimize your contributions.