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After-Tax Bonus-Clawback Calculator

Signing bonus clawback calculator: your after-tax true cost to walk.

Leaving before the clawback window closed? You probably don't owe the whole bonus — and if you repaid it in a later year, the IRS may owe you back. We fold proration, the gross-vs-net timing rule, and the IRC §1341 claim-of-right recovery into one honest number.

✓ Proration + §1341, fused ✓ Nothing leaves your browser Updated Jun 2026

Calculate your true cost to walk

Enter the bonus and your dates. The number below updates as you type — no submit needed.

$
The headline figure on your offer letter.
Same tax chain — affects framing only.
Proration is whatever your agreement (or state law) says — drive it from your actual terms.
7/12 served — earned 5/12 unvested — owed back
%
You supply this — no feeds. A wrong rate skews the recovery.
%
Leave at 0 to model federal only.
Your real after-tax cost to repay this bonus
$8,500
Down from the $30,000 you assumed — a $21,500 gap most people never see.
Cross-year Paid 2024, repaid 2025 → repay the gross, then recover the tax via §1341.
$4,000
That's what you'd lose by ignoring §1341. Repay the gross and skip the claim-of-right recovery, and your $8,500 true cost stays $12,500. The recovery is a line you (or your preparer) elect — it isn't automatic.
Next step: this is the IRC §1341 claim-of-right credit (Schedule 3) to raise with your preparer for the repayment year.

Educational estimate — not tax or legal advice. The §1341 mechanics, the gross-vs-net timing rule, and any clawback's enforceability depend on your facts and your state. Figures use the rate you entered and general mechanics; confirm with a CPA or attorney before acting.

How the math works

One number, built from three stacked decisions

“Repay the bonus” sounds simple. The real cost depends on proration, on when you repay, and on a tax credit almost nobody computes. Here's the chain — in plain English.

01 Proration — you may owe a fraction, not the whole thing

Many signing and retention agreements prorate the repayment by time served: a 12-month vest, left at month 7, often means you owe the unvested 5/12 — not the full bonus. Some state laws push toward proration; many agreements still demand the full amount.

There is no universal rule. Proration is whatever your agreement — or controlling state law — says. This tool drives it entirely from the terms you enter, and labels the result accordingly.

02 Same year vs. a later year — the gross/net fork

This timing branch is the single most consequential fork in the whole calculation.

Same tax year

Repay the net

Repay in the same year you were paid and your employer can generally reverse the withholding — so you effectively repay the net you actually kept. §1341 doesn't come into play.

A later tax year

Repay the gross, then recover

Repay in a later year and you generally must repay the gross — including tax you already paid — then recover that tax separately via §1341 the next filing season.

Why it matters: in the cross-year case you front more than you ever took home, then claw the tax back later. Mistaking one branch for the other is the most expensive error on this page.

03 IRC §1341 claim-of-right — the recovery nobody computes

When you repay — in a later year — income you previously reported under a “claim of right,” §1341 lets you recover the tax you already paid on it. You take either a deduction in the repayment year or a credit equal to the tax you overpaid in the original year — whichever comes out better. This is the two-method election.

It's commonly cited to apply when the repaid amount exceeds $3,000 — the over-$3,000 threshold. Below that, the credit route generally isn't available and recovery is limited to a deduction that, under current rules, may yield little.

It's a recovery you elect, not a refund the IRS sends. Think of it as the credit/deduction line to raise with your preparer — not money that arrives automatically.

04 Two wrong mental models — and the honest number

“I'll just pay back what I netted.” Wrong in the cross-year case — you typically must repay the full gross first, more than you took home.

“I've lost the whole gross forever.” Also wrong — §1341 lets you recover the tax you'd already paid. The honest figure sits between the two, and this calculator lands on it.

FLAG

Your state may limit the clawback itself

Some states restrict or cap employment-contract clawbacks (California is the one most often raised). This tool computes the tax cost of a repayment you've decided to make — it does not model whether the clawback is enforceable in your state, and it quotes no state figures. If enforceability is your question, check your state's current law or talk to an employment attorney.

VERIFY Tax rules and thresholds change, and state clawback statutes vary. The §1341 mechanics here describe the general shape of the law for educational purposes; confirm the current figures and your specific facts with a qualified professional before you act.
Questions

Bonus clawback & §1341, answered

It depends on timing. If you repay in the same tax year you were paid, your employer can usually back out the withholding, so you effectively repay the net. If you repay in a later year, you generally repay the gross and then recover the tax you already paid through an IRC §1341 claim of right.

This is general mechanics, not a ruling on your facts — confirm the payroll treatment with your employer and a tax professional.

Through the IRC §1341 claim-of-right rules. In the year you repay, you elect either a deduction for the repaid amount or a credit equal to the tax you overpaid in the original year — whichever is more favorable. It's claimed on your return (the credit typically flows through Schedule 3); it isn't an automatic refund.

It's the federal mechanism for recovering tax on income you reported in one year but had to repay in a later year because you turned out not to have an unrestricted right to it — like a clawed-back bonus. It generally applies when the repaid amount exceeds $3,000, and lets you take the better of a deduction or a credit.

Sometimes. Many agreements prorate by time served (so leaving partway through the vesting window means you owe only the unvested fraction), and some state laws push toward proration — but plenty of agreements demand the full amount. There's no universal rule; it's whatever your agreement or controlling state law says. Enter your actual terms above and the tool prorates accordingly.

Not necessarily. Between proration (you may owe only the unvested portion) and the §1341 recovery (you can reclaim tax already paid on a cross-year repayment), the true after-tax cost is frequently well below the headline number. The calculator above shows the full chain for the figures you enter.

Generally no — §1341 is a cross-year remedy. In the same-year case the cleaner fix is repaying the net, because your employer can reverse the withholding so you never truly received the withheld tax. Confirm the specifics with a professional.