What is the 1099G for? What box is the amount in? If it's a state tax refund in box 1 you might not need to enter it at all.
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.
