do I have to show a 1099G on my taxes

[TinDss]

do I file a 1099-G

[VolvoGirl]

Depends what is for?  What box is the amount in?  

1099G Box 1 is for Unemployment you have to enter Unemployment.

1099G Box 2  is for State Refund

A State Tax Refund is taxable if you itemized deductions on that prior year's federal return and took a deduction for state income taxes instead of the sale tax.  You got a deduction benefit for it so now you have to include it as income. If you took the standard deduction it is not taxable and you don't need to report it.