Is Your State Tax Refund Taxable by the IRS?

Your state tax refund is taxable by the IRS only if you itemized deductions on your federal return in the year you overpaid your state taxes, and even then only to the extent that deducting those state taxes actually reduced your federal tax bill. If you took the standard deduction that year, the refund is not federal income and you do not report it. Since roughly 90 percent of filers take the standard deduction, most people can stop reading here.¹

If You Took the Standard Deduction, the Refund Is Not Taxable

The standard deduction is a flat amount that has no connection to what you actually paid in state income tax. You never claimed a federal deduction for those state taxes, so getting some of them back is just your own money returning to you. Nothing goes on your federal return. The 1099-G you receive in January still shows the full refund, but the reporting line on your return stays blank or at zero.

This is the end of the analysis for the large majority of filers. Look back at the return you filed for the year the refund covers. If you claimed the standard deduction on that return, you owe the IRS nothing on the refund, regardless of its size.

If You Itemized, the Tax Benefit Rule Decides

When you itemize, state and local income taxes are one of the deductions on Schedule A. Deducting them lowers your federal taxable income, so a later refund represents the recovery of a prior tax benefit. Under 26 U.S.C. § 111, a recovery is excluded from gross income to the extent the original deduction did not actually reduce your tax.²

The practical test compares your actual itemized deductions against the standard deduction you could have taken instead. The difference is the benefit itemizing gave you. Your taxable refund is capped at the lesser of the refund amount or that benefit. If your itemized total equaled or fell below the standard deduction, the benefit is zero and the entire refund stays tax-free.

For tax year 2026, the standard deduction is $16,100 for single filers, $32,200 for married filing jointly, and $24,150 for heads of household.³ Use the figure for the year that generated the refund, not the year you received it.

Working Through the Calculation

Take a single filer for 2026 with a $16,100 standard deduction who itemized instead:

Total itemized deductions claimed: $19,000
Standard deduction available: $16,100
Benefit from itemizing: $19,000 − $16,100 = $2,900
State income tax refund received: $1,800
Taxable portion: lesser of $1,800 or $2,900, so $1,800. The full refund is taxable.

Change one number. Keep the same itemized deductions, but make the refund $4,500. The benefit is still $2,900, so only $2,900 of the refund counts as income. The remaining $1,600 is excluded because those dollars of deduction never actually beat the standard deduction.

If the same filer had itemized deductions of exactly $16,100 or less, the benefit is zero and the whole refund is excluded. The same thing happens when subtracting the refunded amount from your itemized total would have dropped you below the standard deduction.⁴

Situations That Reduce or Eliminate the Taxable Amount

You Deducted Sales Tax Instead of Income Tax

Itemizers choose between deducting state income taxes or state general sales taxes. If you elected sales tax in the year of the overpayment, your state income tax refund is not taxable at all. You never claimed a federal deduction for the income taxes, so there is no prior benefit to recover.⁵

If you did deduct income taxes but could have deducted sales taxes, Publication 525 caps your taxable refund at the difference between the two. Say you deducted $10,000 in state income tax when a $9,000 sales tax deduction was available. The most you would ever include in income from a refund is $1,000, no matter how much came back.⁴ This cap applies before the standard deduction comparison, so it can shrink the taxable amount further.

You Paid the Alternative Minimum Tax

The AMT disallows the deduction for state and local taxes entirely. If AMT was the binding constraint on your prior-year tax, deducting state income taxes gave you no benefit, which typically reduces or eliminates the taxable portion of the refund. The standard Schedule 1 worksheet does not handle this case; the IRS points taxpayers to the recovery worksheets in Publication 525 instead.⁵

If some taxable refund still appears on your return, it comes back off on Form 6251 as a negative entry on line 2b, keeping it out of alternative minimum taxable income.⁶

The SALT Cap Limited Your Deduction

Federal law caps the combined deduction for state and local income, property, and sales taxes. For 2026, that cap is $40,400 for most filers and $20,200 for married individuals filing separately.⁷ If the cap kept you from deducting part of what you paid, the portion above the cap gave you no federal benefit, and a refund traceable to that portion is not taxable.

Under the $10,000 cap that applied from 2018 through 2024, this exclusion wiped out a lot of refund income automatically. With the higher 2026 cap, more of what you paid is deductible, and more of any refund can be taxable. The analysis shifts back toward the standard deduction comparison for most filers.

What Goes on Your Return

States issue Form 1099-G by January 31. Box 2 reports the total state or local income tax refund, credit, or offset.⁸ That box is not necessarily what you report. You report the taxable portion calculated through the tax benefit rule, which may be smaller than the 1099-G figure or zero.

The taxable amount goes on Line 1 of Schedule 1 (Form 1040), labeled “Taxable refunds, credits, or offsets of state and local income taxes.”⁹ If the whole refund is excludable, enter zero and keep your worksheet with your records.

Two housekeeping points. Applying your refund to next year’s estimated state tax instead of taking the cash does not defer the income; the IRS still treats the full amount as received when it was applied. And any interest the state paid you on a delayed refund is separate: it comes on a 1099-INT and is fully taxable as ordinary income, whether or not you itemized.¹⁰

If You Leave a Taxable Refund Off Your Return

The IRS gets its own copy of every 1099-G and runs an automated match against your return. A mismatch generates a CP2000 notice proposing additional income and the tax that would go with it.¹¹ A CP2000 is a proposal, not a bill, and you have 30 days to respond (60 if you are outside the United States).

If the proposal is correct, sign and pay within 30 days to stop additional interest. If the refund was partially or fully excludable under the tax benefit rule, write back with a signed explanation and documentation: a copy of the prior-year return showing the standard deduction, or a worksheet showing that itemized deductions did not exceed the standard deduction by enough to make the refund taxable. Ignoring the notice leads to a Statutory Notice of Deficiency and formal assessment.

Failing to report income shown on a 1099 can also draw a 20 percent accuracy-related penalty on the underpayment; the IRS lists omitted 1099 income as an example of negligence that supports it.¹² Running the tax benefit calculation now, and either reporting the right number or keeping the worksheet proving zero, is the simplest way to avoid that letter.

1
Internal Revenue Service. IRS Issues Guidance on State Tax Payments
2
Office of the Law Revision Counsel. 26 U.S. Code 111 – Recovery of Tax Benefit Items
3
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
4
Internal Revenue Service. Publication 525 (2025), Taxable and Nontaxable Income
5
Internal Revenue Service. Instructions for Form 1040 (2025)
6
Internal Revenue Service. Instructions for Form 6251 (2025)
7
Office of the Law Revision Counsel. 26 U.S. Code 164 – Taxes
8
Internal Revenue Service. Instructions for Form 1099-G (03/2024) – Specific Instructions
9
Internal Revenue Service. Schedule 1 (Form 1040) 2025
10
Internal Revenue Service. Topic No. 403, Interest Received
11
Internal Revenue Service. Topic No. 652, Notice of Underreported Income – CP2000
12
Internal Revenue Service. Accuracy-Related Penalty