State tax refunds are taxable income on your federal return only if you claimed the deduction in the year you paid the state tax

Whether your state tax refund counts as taxable income depends on one thing: did you deduct state taxes on your federal return in the year you paid them? If you did, the refund is taxable federal income in the year you receive it. If you didn't deduct state taxes that year, the refund is not taxable.

This rule exists because the tax code does not let you deduct an expense and then ignore the refund. You either get the deduction and owe tax on the refund, or you get neither. Most people who itemize deductions on Schedule A will owe federal tax on state refunds. People who take the standard deduction usually will not.

The refund itself is not taxable to your state — your state already decided what it owes you. The question is only whether the federal government taxes it as your income.

Key Takeaways

  • You owe federal tax on a state refund only if you deducted state taxes on your federal return in the year you paid them.
  • If you took the standard deduction instead of itemizing, your state refund is not taxable to the federal government.
  • You report the refund on Form 1040 as "other income" in the year you receive it, not the year you paid the original tax.
  • The IRS sends you Form 1099-G if your refund is over a certain amount, but you may owe tax on smaller refunds too.
  • You can use the IRS Worksheet for Line 21 to calculate how much of your refund is actually taxable if you had mixed deductions.

How the deduction-refund connection works

When you file your federal return, you choose between two paths: itemize deductions on Schedule A, or take the standard deduction. The standard deduction is a flat amount that changes each year. Itemizing means you add up your deductible expenses — including state and local taxes — and use that total instead.

If you itemized and included state income tax or state sales tax as a deduction, you reduced your federal taxable income that year. When your state later refunds part of that tax, the refund is income to you. The federal government taxes it because you got a tax benefit from the original payment.

If you took the standard deduction, you did not deduct state taxes at all. Your state refund is not taxable federally because you never got a federal tax benefit from paying the state tax in the first place.

This is called the "tax benefit rule." It prevents people from getting a deduction and a refund for the same dollar.

When you receive the refund versus when you paid the tax

The year that matters is the year you receive the refund, not the year you paid the original state tax. If you paid state tax in 2023 and received the refund in 2024, you report it on your 2024 federal return.

This timing matters because you might have itemized in 2023 but taken the standard deduction in 2024. In that case, the refund is still taxable on your 2024 return, because you deducted the original payment in 2023.

Conversely, if you took the standard deduction in 2023 and itemized in 2024, a refund you receive in 2024 for 2023 taxes is not taxable, because you did not deduct those taxes federally.

Understanding Form 1099-G and reporting requirements

Your state will send you Form 1099-G if your refund meets a certain threshold. Most states use $10 as the minimum, though some use $1. The form shows the refund amount in Box 1. You will receive it by January 31 of the year after you receive the refund.

Form 1099-G does not mean the refund is automatically taxable. It is just a report of the money you received. You still have to determine whether you deducted state taxes in the prior year. If you did not, you do not owe federal tax on the refund even though you received the form.

You report the refund on your federal return on Form 1040, Line 21 (Other income). If the refund is not taxable because you did not itemize, you can still report it and then subtract it as a negative number, or you can straightforward not report it. Either way, the result is the same — no tax owed on that income.

Refunds when you itemized but had a small state tax deduction

The calculation gets more complex if you itemized but your state tax deduction was smaller than the standard deduction that year. In that case, only part of your refund may be taxable.

The IRS provides a worksheet (Worksheet for Line 21 in the Form 1040 instructions) to calculate this. The basic idea: if your total itemized deductions exceeded the standard deduction, the full refund is taxable. If your itemized deductions were less than the standard deduction, only the portion of the refund that relates to the deduction you actually used is taxable.

Example: In 2023, the standard deduction was $13,850 for a single filer. If you itemized and your total deductions were $14,000, you used $14,000 in deductions. If your state tax deduction was $3,000 of that $14,000, and you receive a $500 refund in 2024, the full $500 is taxable because you used the state tax deduction to reduce your taxable income.

But if your total itemized deductions were $13,500 — less than the standard deduction — you did not actually benefit from itemizing. In that case, none of your state refund is taxable, because you did not actually deduct the state tax.

State refunds and the standard deduction

If you took the standard deduction in the year you paid the state tax, your state refund is not taxable federally. This is the most common situation for most filers, because the standard deduction is high and many people do not have enough deductions to exceed it.

You do not have to report the refund on your federal return at all. If you receive Form 1099-G, you can disregard it for federal purposes (though you may need to keep it for your records). Your state may have its own rules about whether the refund is taxable to the state, but that is separate from your federal tax.

The standard deduction changes every year and depends on your filing status and age. Check the current year's Form 1040 instructions to see what the standard deduction is for your situation.

What to do if you are unsure whether you itemized

Look at your prior-year federal return. On Form 1040, check whether you filed Schedule A (Itemized Deductions) or took the standard deduction. If Schedule A is attached, you itemized. If it is not, you took the standard deduction.

If you filed jointly with a spouse, you both used the same method — you either both itemized or both took the standard deduction. The refund is taxable to whoever received it or whose name is on the state return, but the deduction status applies to the joint return.

If you cannot find your prior return, you can request a transcript from the IRS using Form 4506-C or by logging into your IRS account online. The transcript will show your filing status and whether you itemized.

Frequently Asked Questions

Do I owe federal tax on my state refund if I took the standard deduction?

No. The refund is taxable only if you deducted state taxes on your federal return. If you took the standard deduction, you did not deduct state taxes, so the refund is not taxable federally. You do not have to report it on your federal return.

What if I received Form 1099-G but did not itemize?

Form 1099-G is just a report of the refund amount. It does not determine whether the refund is taxable. If you took the standard deduction, the refund is not taxable even though you received the form. You can disregard it for federal purposes.

If I itemized in 2023 and get a refund in 2024, which year's return does it go on?

It goes on your 2024 return, because that is the year you received it. You report it on Form 1040, Line 21. The fact that you paid the original tax in 2023 does not change when you report the refund.

Can I deduct state taxes and then not pay tax on the refund?

No. The tax benefit rule requires that if you deducted the state tax and got a federal tax benefit, you must report the refund as income when you receive it. You cannot have both the deduction and avoid tax on the refund.

What if my state refund is less than $10 and I did not receive Form 1099-G?

You may still owe federal tax on it if you itemized. Form 1099-G is only required above a certain threshold, but the tax rule applies to all refunds. Check whether you itemized, and if you did, report the refund on Line 21 of your federal return.