The number of U.S. residents who have health savings account-compatible health coverage has increased to about 11 million this year, up 14% from the 2010 total.

America’s Health Insurance Plans (AHIP), Washington, has published that statistic in its latest review of the HSA-compatible plan market.

The current version of health savings accounts (HSAs) has been available since January 2004.

To qualify to buy an HSA, individual must have high-deductible coverage that has a total out-of-pocket spending limit below a certain level.

People who own high-deductible, HSA-compatible coverage do not necessarily have to open HSAs, but, if they do open HSAs, they can exclude HSA contributions and HSA expenditures on qualified health care expenses from taxable income.

Enrollment in HSA-compatible large group plans rose 26% between January 2010 and January 2011, while ownership of HSA-compatible individual health insurance policies grew 15%.

The people who are eligible to buy HSAs included 2.4 million holders of individual coverage, 2.8 million enrollees in small group plans and 6.3 million enrollees in large group plans, AHIP says.

- Allison Bell

Other HSA coverage from National Underwriter Life & Health: