Sign-on bonus payback calculator: estimate what you owe if you leave early under prorated or cliff clawback terms, plus how much bonus you have earned.
Sign-On Bonus Payback Formula
Under a prorated clawback, you repay only the unearned share of the bonus:
Owed = B * (T - t) / T
Under a cliff clause, the full bonus is due if you leave before the commitment period ends:
Owed = B (if t < T), 0 (if t >= T)
Variables:
- Owed is what you must repay if you leave now
- B is the bonus amount subject to clawback — the gross bonus in most agreements, or the net amount received if your agreement says so
- T is the commitment period in months (12 and 24 are most common)
- t is the number of months you have completed
Enter your bonus, the commitment period, and how long you have worked, then pick the repayment terms from your agreement. The calculator shows the amount owed if you resign today, how much of the bonus you have already earned, and the amount you effectively earn with each additional month — useful for timing a departure so you leave the least money on the table.
Prorated Payback on a $10,000 Sign-On Bonus
Amount owed at departure under monthly proration for the two most common commitment periods.
| Months completed | 12-month agreement | 24-month agreement |
|---|---|---|
| 3 | $7,500.00 | $8,750.00 |
| 6 | $5,000.00 | $7,500.00 |
| 9 | $2,500.00 | $6,250.00 |
| 12 | $0.00 | $5,000.00 |
| 18 | $0.00 | $2,500.00 |
| 24 | $0.00 | $0.00 |
Example Problems
Example 1: A $10,000 sign-on bonus with a 12-month prorated clawback, leaving after 7 months.
Owed = 10,000 * (12 – 7) / 12 = 10,000 * 0.4167 = $4,166.67.
You have earned $5,833.33 of the bonus, and each additional month you stay earns another $833.33.
Example 2: The same bonus with a cliff clause, leaving after 11 months.
Because 11 is less than 12, the full $10,000 is repayable — one more month of employment would reduce that to $0. Cliff clauses make the timing of your resignation date worth thousands.
Frequently Asked Questions
Do I repay the gross bonus or what I actually received?
Whatever your agreement says, and most say gross. That stings because taxes were withheld from the payment, so a $10,000 gross bonus might have put $7,000 in your account while the clawback demands $10,000. If you repay in a later tax year, ask a tax professional about a claim-of-right deduction or credit for the taxes already paid.
Can my employer take the repayment out of my final paycheck?
It depends on state law and what you agreed to in writing. Some states allow deductions you have authorized; others (like California) sharply restrict deductions from final wages even with an agreement. Many employers instead invoice you for the balance after your last check.
Can I negotiate the clawback before signing?
Often, yes. The most valuable changes are converting a cliff to monthly proration, shortening the commitment period, and adding carve-outs so nothing is owed if you are laid off, terminated without cause, or resign for good reason. Getting those terms in the signed agreement matters far more than the bonus headline number.
