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U.S. nonresident alien: Is my state tax refund taxable?
Federal income tax refunds received during 2016 are not taxable income for 2016 (or any other year) on either the Federal or the State tax return. The State income tax refund for 2015 received during 2016 is not taxable income on the State tax return for 2016. It is taxable income on the Federal tax return for 2016 only to the extent that you received a tax benefit (reduction in Federal income tax due) from deducting State income tax as an Itemized Deduction on your 2015 Federal return. If you didn't deduct State income tax because you deducted State sales tax instead, then the State income tax refund is not taxable income on the Federal tax return.