Health Savings Accounts (HSAs) were created by the Medicare bill signed by President Bush on December 8, 2003. HSAs are a form of medical savings account that must be accompanied by a high-deductible health insurance plan. HSAs allow individuals/employers to set aside money on a pre-tax or tax-deductible basis and then withdraw the money tax-free to pay qualifying medical expenses. Use this calculator to help compare a traditional, low-deductible health plan to a high-deductible health plan accompanied by an HSA to cover out-of-pocket expenses.