How much can I contribute to my HSA if I'm HSA-eligible all year?

Under federal tax law, you can contribute the following amount if you remain eligible all 12 months of the calendar year.

2025:
Self-only coverage: $4,300.
Family coverage: $8,550 (even if only one covered family member is HSA-eligible)
Catch-up contribution (age 55 or older): $1,000