Merritt Personal Lines Manual: Balance in a Health Savings Account

An HSA is generally exempt from tax. You are permitted to take a distribution from your HSA at any time; however, only those amounts used exclusively to pay for qualified medical expenses are tax free. Amounts that remain at the end of the year are generally carried over to the next year (see Excess contributions, earlier). Earnings on amounts in an HSA are not included in your income while held in the HSA.