The formulas
- Tax on benefits = tax(other taxable income + benefits) - tax(other taxable income)
- Withholding = 10% of each payment when elected on Form W-4V
- Owed = tax on benefits - withholding
How it works
Topic 418 states that unemployment compensation is included in income. The state agency reports it on Form 1099-G box 1, with any federal withholding in box 4. Form W-4V lets you request withholding from unemployment compensation at exactly 10% of each payment; no other rate is allowed for those payments.
Withholding of 10% falls short when the benefits land in the 12% or higher bracket. Make estimated tax payments for the difference, or raise withholding at a job, to avoid a shortfall at filing. The tool uses 2026 rates and ignores credits.
Illustrative figures only. Check the result against your firm's methodology before relying on it.
Common questions
Can I choose 12% or 22% withholding on unemployment?
No. Form W-4V allows only 10% for unemployment compensation. The 7%, 12% and 22% choices apply to other government payments.
Is unemployment subject to Social Security tax?
No. It is subject to federal income tax only.
Is backup withholding taken from unemployment?
No. The IRS backup withholding page lists unemployment compensation among payments excluded from it.
Sources
- IRS Topic No. 418, Unemployment compensation
- IRS Form W-4V (Rev. January 2026), Voluntary Withholding Request
- IRS Rev. Proc. 2025-32, 2026 inflation-adjusted items (IRB 2025-45)
- IRS Backup withholding
Runs in your browser. The figures you type are not sent to CORAA or stored. Check the result against your firm's methodology before relying on it.