For 2009:
The maximum annual contribution to an HSA is the sum of the limits determined separately for each month, based on status, eligibility and health plan coverage as of the first day of the month.
The maximum monthly contribution for eligible individuals with self-only coverage under an HDHP is 1/12 of the lesser of 100% of the annual deductible under the HDHP (minimum $1,150) or $3,000.
The maximum monthly contribution for eligible individual with family coverage under an HDHP is 1/12 of the lesser of 100% of the annual deductible under the HDHP (minimum $2,300) or $5,950.
Catch-up contributions can be made on behalf of individuals between the age of 55 and 65. For 2007, the catch-up contribution is $800.
How to calculate your contribution?
a) Amount of Annual deductible based on your coverage $____________
b) Amount of Maximum contribution limit based on your coverage $____________
c) The lesser of (a) or (b) is your annual allowable contribution. $____________
d) (c) divided by 12 $____________
e) (d) times the number of months your H.S.A. will be in effect on the 1st day of the month. This will be the amount you may contribute this year $____________
Example: You established your HSA on October 15, 2007. Your HSA was in effect for the two 1st days of the month. Your calculation will be your annual contribution allowed divided by 12 times two. This will be the amount you may contribute for 2007.
If each spouse has family coverage under a separate health plan, and both plans qualify as an HDHP, then both spouses are treated as covered under the plan with the lowest deductible and the contributions should be calculated that way. If both spouses covered under an HDHP have HSA plans, the maximum amount of contribution will be shared between the spouses. Spouses cannot contribute the maximum contribution limit to each of their HSA's. However, each spouse can contribute the catch-up amount, if eligible, to his or her individual accounts.