U.S. Democratic presidential candidate Bernie Sanders' tax and benefit plans would raise income for most Americans but his proposal for single-payer health care would help generate record federal deficits, two Washington think tanks said on Monday.

An analysis by the Tax Policy Center said that although most people would pay higher taxes under Sanders' plan, the average household income would increase by nearly $4,300 in 2017 after his proposed benefits were factored in.

Those benefits include an expansion of the Social Security government pension plan, paid family leave and free tuition at public colleges, ideas that have generated support for Sanders, a U.S. senator from Vermont, as he seeks to become the Democratic nominee for the Nov. 8 presidential election.