美国现在有8个州不收州所得税，除了这8个州，还有7个州只是不征收退休金的税。伊州是其中一个。

Alabama	Pension income
Alaska	No state income tax
Florida	No state income tax
Hawaii	Pension income
Illinois	Retirement income exempt, including Social Security, pension, IRA, 401(k)
Iowa	Pension income
Mississippi	Retirement income exempt, including Social Security, pension, IRA, 401(k)
Nevada	No state income tax
New Hampshire	Pension, IRA, 401(k)
Pennsylvania	Pension, IRA, 401(k)
South Dakota	No state income tax
Tennessee	No state income tax
Texas	No state income tax
Washington	No state income tax
Wyoming	No state income tax