Health savings accounts (HSAs) were created as a tax-favored framework to provide health care benefits mainly for small business owners, the self-employed, and employees of small-to medium-sized companies who do not have access to health insurance.

The tax benefits of HSAs are quite substantial.  Eligible individuals can make tax-deductible (as an adjustment to AGI) contributions to HSA accounts.  Funds in the account may be invested (somewhat like an IRA), so there is opportunity for growth.  The earnings inside the HSA are free from federal income tax, and funds withdrawn to pay eligible health care costs are tax free.

An HSA is a tax-exempt trust or custodial account established exclusively for paying qualified medical expenses of a participant who, for the months for which contributions are made to an HSA, is covered under a high-deductible health plan.  Consequently, an HSA is not insurance; it is an account that must be opened with a bank, brokerage firm, or other provider (i.e., insurance company).  It is therefore different from a flexible spending account in that it involves an outside provider serving as a custodian or trustee.

The 2014 inflation-adjusted deduction for individual self-only coverage under a high-deductible plan is limited to $3,300, while the comparable amount for family coverage is $6,550.  This is an increase of 1.5% and 1.6%, respectively, from 2013.  For 2014, a high-deductible health plan is defined as a health plan with an annual deductible that is not less than $1,250 for self-only coverage or $2,500 for family coverage, and the annual out-of-pocket expenses (including deductibles and copayments, but not premiums) must not exceed $6,350 for self-only coverage or $12,700 for family coverage.