HSA contribution limits for those not covered for a full year
It’s also important to know that while those are the annual maximums, you’ll only be able to contribute to an HSA for the months that you’re actually enrolled in an eligible healthcare plan at the first of the month. For example, if you had an eligible healthcare plan through July 27, you’d be able to contribute a prorated amount of seven-twelfths of the annualized amount.
所以,如果您8月20日开始工作,您只能从9月1日开始算。
不完整的月是否计入,看那个月的1号是否包括。