Health Savings Accounts are combined with a High Deductible Health Plan (HDHP) to offer a more affordable approach to healthcare. Premiums for HDHPs are lower. HSAs have a tax favored status - meaning what you contribute is either pre-tax or tax deductible. Interest earned on the money is tax-deferred. Using the money to pay for qualified medical expenses is tax-free. Lower insurance premiums combined with using tax-free money can lead to significant savings.