Tax year 2026 · updated October 2, 2026 · engine estimates
Retro pay calculator (2026)
Sample take-home: $60,859.58 a year · $5,071.63 a month · $2,340.75 biweekly.
Tax year 2026, California, single, standard deduction, no 401(k).
Retro pay (retroactive pay) is wages you should have received earlier, paid as a lump on a later check — a raise with a past effective date, missed overtime, or a classification correction. Searchers type “retro pay calculator.” This page preloads an $80,000 salary plus a $4,000 retro lump so you can see regular take-home plus the supplemental sketch. It is not a second copy of the bonus calculator, the signing-bonus page, or the PTO payout page.
Your pay
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Estimated take-home · CA · Annual
per year
See breakdown
| Item | Annual |
|---|---|
| Gross | $80,000.00 |
| Federal income tax | $9,650.00 |
| Social Security | $4,960.00 |
| Medicare | $1,160.00 |
| State income tax | $3,210.42 |
| CA SDI | $1,040.00 |
| Total tax | $19,140.42 |
| Net / take-home | $60,859.58 |
What this includes. Included: 2026 federal brackets + standard deduction (Rev. Proc. 2025-32), Social Security 6.2% up to $184,500, Medicare 1.45% (plus 0.9% additional Medicare over the threshold), and the state income-tax model (including states with no state income tax); CA SDI, WA Cares, and optional NYC when those lines apply. Not included: other local/city taxes, Child Tax Credit, EITC, itemized deductions, 401(k)/HSA/FSA unless typed in, garnishments. See methodology.
Estimate only — not tax advice or full tax software. 2026 federal brackets and a simplified state model. Locals other than optional NYC, CA SDI, and WA Cares are omitted. Confirm with your pay stub or a tax professional.
The calculator sample starts as a single filer. Change filing status above to see married or head-of-household take-home on this same wage. Numbers update as you type.
Paycheck breakdown
| Period | Gross | Taxes | Take-Home |
|---|---|---|---|
| Annual | $80,000.00 | $19,140.42 | $60,859.58 |
| Monthly | $6,666.67 | $1,595.03 | $5,071.63 |
| Biweekly | $3,076.92 | $736.17 | $2,340.75 |
| Weekly | $1,538.46 | $368.09 | $1,170.38 |
| Hourly | $38.46 | $9.20 | $29.26 |
Tax breakdown
| Line | Amount |
|---|---|
| Federal | $8,770.00 |
| State | $3,210.42 |
| Social Security | $4,960.00 |
| Medicare | $1,160.00 |
| CA SDI | $1,040.00 |
| Total tax | $19,140.42 |
| Effective rate | 23.9% |
| Net % of gross | 76.1% |
Payroll usually withholds federal tax on a retro lump with the IRS optional flat 22% on supplemental wages (37% above $1,000,000). Some employers fold it into a regular check and use the aggregate method instead. This engine shows the flat supplemental sketch so you can plan cash, not file a return. Year-end tax is still ordinary wages at your marginal rate.
FICA still applies to retro wages. Social Security stops at the $184,500 2026 wage base; Medicare does not. California adds a simplified PIT increment plus 1.3% SDI on the lump in this model. Texas has no state income tax on wages, so the state line on the same $4,000 retro is zero; federal and FICA stay.
Type a different lump in the bonus field if your back-pay amount is not $4,000. Use the bonus calculator for a generic supplemental field, PTO payout taxes for a vacation cash-out, or signing bonus after taxes for a $10,000 offer sample. Reviewed October 2, 2026.
Sample estimates
| Sample | State tax | Federal + FICA | Annual take-home | Monthly | Biweekly |
|---|---|---|---|---|---|
| $80k CA single + $4k retro pay | $3,210.42 | $14,890.00 | $60,859.58 | $5,071.63 | $2,340.75 |
| $80k TX single + $4k retro pay | $0.00 | $14,890.00 | $65,110.00 | $5,425.83 | $2,504.23 |
Engine estimates for tax year 2026 — not tax advice or a pay stub. Omits local taxes, most credits, and SDI/PFML. See methodology.
What this includes. Included: 2026 federal brackets + standard deduction (Rev. Proc. 2025-32), Social Security 6.2% up to $184,500, Medicare 1.45% (plus 0.9% additional Medicare over the threshold), and the state income-tax model (including states with no state income tax); CA SDI, WA Cares, and optional NYC when those lines apply. Not included: other local/city taxes, Child Tax Credit, EITC, itemized deductions, 401(k)/HSA/FSA unless typed in, garnishments. See methodology.
Related: Bonus paycheck calculator · PTO payout taxes · Signing bonus after taxes
FAQ
What is retro pay on a paycheck?
Back wages paid later: a raise that started last month, missed overtime, or similar. This calculator treats the lump as extra gross this year, not a second salary.
Is retro pay taxed at 22%?
Withholding often uses the IRS optional 22% supplemental rate (37% over $1M). Your Form 1040 still taxes it as ordinary wages. The stub can look harsher than the annual return.
Is this the same as a bonus calculator?
Same supplemental engine. This URL matches “retro pay calculator” with a $4,000 back-pay sample, not a $10,000 signing bonus or a $5,000 PTO cash-out.