State tax refunds are taxable on your federal return only if you took the standard deduction in the year you received the refund, and only to the extent the refund reduced your federal tax liability that year

This rule is called the tax benefit rule. It means you pay federal tax on a state refund only if you actually got a federal tax benefit from deducting that state tax in the first place. If you itemized deductions instead of taking the standard deduction, you do not report the state refund on your federal return at all — even though you deducted the state tax paid.

The IRS sends you a Form 1099-G in January or February for any state refund over $10. The amount on that form does not automatically mean you owe federal tax on it. You have to do the math yourself to see whether the tax benefit rule applies to you.

Key Takeaways

  • You report a state refund on your federal return only if you took the standard deduction in the year you paid the state tax that generated the refund.
  • The taxable amount is limited to the amount by which the state tax deduction reduced your federal taxable income — often less than the full refund.
  • If you itemized deductions, the state refund is not taxable on your federal return, even though you deducted the state tax originally.
  • The IRS sends Form 1099-G for refunds over $10, but you must calculate your own tax liability using the tax benefit rule.
  • You report the taxable portion on Form 1040, Schedule 1, line 1 (other income) in the year you receive the refund.

How the tax benefit rule works in practice

The tax benefit rule prevents you from getting a double benefit: a deduction when you paid the tax, and then a refund without paying tax on it. Here is the actual calculation.

In Year 1, you paid $8,000 in state income tax and took the standard deduction of $13,850 (2023 single filer example). The state tax payment did not reduce your federal taxable income at all, because the standard deduction was already larger. In Year 2, you receive a $1,200 state refund. You owe zero federal tax on it, because you received zero federal benefit from the state tax deduction in Year 1.

Now a different scenario: In Year 1, you itemized deductions and deducted $8,000 in state tax. In Year 2, you receive a $1,200 state refund. You still owe zero federal tax on it, because you itemized — the tax benefit rule does not apply to itemizers.

One more: In Year 1, you took the standard deduction of $13,850, but your state tax was only $5,000. That $5,000 reduced your federal taxable income by $5,000 (you got a benefit). In Year 2, you receive a $6,000 state refund. You owe federal tax on only $5,000 of it — the amount that actually reduced your federal tax in Year 1. The other $1,000 is not taxable.

When you itemized deductions instead

If you itemized deductions in the year you paid the state tax, the state refund is never taxable on your federal return. This is true even if the state tax deduction was the reason you itemized in the first place.

The logic is that you already chose to itemize, which means you got the full benefit of all your itemized deductions combined — not just the state tax line. When you receive a refund of part of that state tax, you are not undoing a federal benefit that was specific to that one deduction. You are receiving money back from a pool of deductions you already used.

This is one reason some taxpayers who itemize do not worry about state refunds at all: they have no federal tax consequence. If you are unsure whether you itemized in the prior year, check your prior-year tax return. Line 12 on Form 1040 shows your standard deduction amount; if your itemized deductions (Schedule A, line 17) were higher, you itemized.

Calculating the taxable amount when you took the standard deduction

If you took the standard deduction in the year you paid the state tax, you must calculate how much of the refund is taxable. The taxable amount is the lesser of (1) the refund you received, or (2) the amount by which the state tax reduced your federal taxable income.

To find the amount by which state tax reduced your federal taxable income, look at your prior-year return. Find your adjusted gross income (AGI) on line 11 of Form 1040. The state tax deduction reduced your AGI by the full amount of state tax you paid — but only if that state tax was less than your standard deduction. If your state tax was $5,000 and your standard deduction was $13,850, the state tax reduced your AGI by $5,000. If your state tax was $15,000 and your standard deduction was $13,850, the state tax did not reduce your AGI at all (the standard deduction was the limiting factor).

Once you know the amount of the benefit, compare it to the refund. If you received a $3,000 refund but the state tax only reduced your AGI by $2,000, you report $2,000 as taxable income. If you received a $3,000 refund and the state tax reduced your AGI by $5,000, you report the full $3,000.

Where to report the taxable amount on your federal return

You report the taxable portion of a state refund on Form 1040, Schedule 1 (Additional Income and Adjustments to Income), line 1, labeled "Other income." This is the same line where you report prizes, gambling winnings, and other miscellaneous income.

You do not need to attach the Form 1099-G to your return, but keep it with your tax records. The IRS will have a copy, and the amount on the form is what they will match against your return.

If the refund is not taxable under the tax benefit rule, you do not report it anywhere. Do not file Form 1040-X (amended return) to remove it if you already reported it — instead, file Form 1040-X and show the correction on Schedule 1, line 1, with a negative number or a note explaining the tax benefit rule.

Form 1099-G and what it does and does not tell you

The IRS requires states to send Form 1099-G to you and to the IRS for any refund over $10. The form shows the refund amount in box 1a (state income tax refund). Many taxpayers assume this means the entire amount is taxable on their federal return. It is not.

Form 1099-G is a report of the refund amount only. It does not account for whether you took the standard deduction or itemized, and it does not calculate the tax benefit rule. The IRS knows this — they do not automatically assess tax on every Form 1099-G they receive. But if you do not report the taxable portion yourself, the IRS may send you a notice asking why the 1099-G amount does not match your return.

If you receive a Form 1099-G and you believe the refund is not taxable (because you itemized, or because the state tax did not reduce your federal taxable income), keep documentation of your prior-year return showing your deduction method. You may need it if the IRS asks.

Special cases: Amended returns and multi-year refunds

If you filed an amended return (Form 1040-X) for the year you paid the state tax, the tax benefit rule applies to the amended return, not the original. If your amended return changed your deduction method from itemizing to standard (or vice versa), recalculate the taxable portion of any refund you receive.

Some states issue refunds that cover multiple years of overpayment. Each year's portion is treated separately. If you took the standard deduction in Year 1 but itemized in Year 2, the portion of the refund attributable to Year 1 may be taxable on your federal return, but the Year 2 portion is not. The state refund notice should break down the refund by year; if it does not, contact the state tax agency for a breakdown before you file your federal return.

If you receive a refund for a year in which you had no federal tax liability (your income was below the filing threshold), the refund is still subject to the tax benefit rule, but the taxable amount may be zero because you received no federal benefit from any deduction.

Frequently Asked Questions

Do I have to report a state refund if I did not receive a Form 1099-G?

States are required to send Form 1099-G only for refunds over $10. If your refund was $10 or less, you did not receive a form, but the tax benefit rule still applies. If the refund is taxable under the rule, you should report it on your federal return. The IRS may not know about it, but you are still required to report it.

What if I took the standard deduction but my state tax was more than the standard deduction amount?

If your state tax exceeded your standard deduction, the state tax did not reduce your federal taxable income at all. The standard deduction was the limiting factor. In this case, any refund of state tax is not taxable on your federal return, because you received no federal benefit from the state tax payment.

Can I deduct the state refund as a loss on my federal return?

No. A refund is a return of money you overpaid; it is not a loss. You cannot deduct it or carry it forward. If the refund is taxable, you report it as income. If it is not taxable, you simply do not report it.

What if I am not sure whether I took the standard deduction or itemized?

Check your prior-year tax return. Form 1040, line 12 shows your standard deduction. Schedule A, line 17 shows your itemized deductions if you filed one. If Schedule A line 17 is higher than line 12 on Form 1040, you itemized. If you cannot find your return, you can order a transcript from the IRS using Form 4506-C or through your IRS online account.

Do I owe state tax on a federal refund?

No, this article covers state refunds on federal returns. Federal refunds are generally not taxable by states either, though a few states tax federal refunds under specific circumstances. Check your state tax agency website or your state return instructions for your state's rule.