Mississippi Bonus Tax Calculator
Data compiled and maintained by Edmond Daher · Updated 2026-08-02
Mississippi bonus tax calculator
Your Mississippi bonus is ordinary income; the payday deduction is a flat withholding prepayment, not a higher rate. Mississippi has no separate bonus rate, so it withholds using the aggregate method on top of the 22% federal prepayment and FICA. Type in your salary and bonus above and the tool lines up today's withholding against your true tax, with the refund or balance due. Everything runs in your browser.
Short version: in Mississippi, a bonus paid on its own is withheld at the flat federal 22%, no separate Mississippi rate — it's withheld as ordinary wages, and 7.65% FICA. None of that is the final number — a bonus is taxed at your marginal rate once you file, so the calculator above estimates what comes back or is still due.
Estimate only, not tax advice — terms.
Bonus withholding in Mississippi next to Louisiana, Alabama and Tennessee
Take a $10,000 bonus for someone on $70,000 and compare Mississippi with bordering Louisiana, Alabama and Tennessee:
| State | Bonus method | State withheld | Total withheld |
|---|---|---|---|
| Mississippi | aggregate method | $400 | $3,365 |
| Louisiana | aggregate (~3%) | $300 | $3,265 |
| Alabama | flat 5% | $500 | $3,465 |
| Tennessee | no state income tax | $0 | $2,965 |
Total combines the 22% federal, the state line, and FICA. Single-filer estimates — your real income tax settles when you file.
Mississippi bonus withholding across three bonus sizes
For a single filer on a $70,000 salary, here's the Mississippi withholding at three bonus amounts:
| Bonus | Federal | Mississippi | FICA | Total | % of bonus |
|---|---|---|---|---|---|
| $5,000 | $1,100 | $200 | $383 | $1,683 | 33.7% |
| $25,000 | $5,500 | $1,000 | $1,913 | $8,413 | 33.7% |
| $100,000 | $22,000 | $4,000 | $7,650 | $33,650 | 33.7% |
The share changes because Social Security ends at the wage base; the income tax reconciles on your return either way.
Worked example: a $18,000 Mississippi bonus at a $215,000 salary
Say you earn $215,000 in Mississippi and your employer cuts a separate $18,000 bonus check:
- Off the top: $5,103 disappears at payday — $3,960 federal, $720 Mississippi, and $423 FICA — so roughly $12,897 actually reaches you, a 28.3% cut.
- What it actually costs: the true income tax on the bonus is about $6,250 (federal $5,530 + Mississippi $720), plus the same $423 FICA.
- The gap: you'll owe about $1,570 more at filing, because your real rate beats the 22% withheld. FICA ($423) stays either way — it's a real tax.
Illustrative single-filer figures from this page's engine; your result depends on your total income and filing status.
The three cuts on a Mississippi bonus: federal, state, and FICA
Federal: a flat 22% prepayment. Paid on its own check, a bonus has federal income tax withheld at a flat 22% (IRS Publication 15). Only the part of your yearly bonuses above $1,000,000 is withheld at 37%; everything under that stays a flat 22% — a shortcut, not a rate reserved for bonuses.
Mississippi folds the bonus into regular pay. Lacking a flat supplemental rate, Mississippi uses the aggregate method: withholding is figured on your wages plus the bonus. Mississippi's income tax is graduated across two Mississippi brackets topping out at 4%, so an aggregated bonus is withheld somewhere along that schedule.
FICA: withheld and owed. Social Security and Medicare take 7.65% of the bonus — a true tax, not a prepayment. The income-tax withholding is the only part that can come back — the FICA share is settled the moment it's taken.
For your regular salary rather than a bonus, use the Mississippi paycheck calculator.
Why your Mississippi bonus looks over-taxed — and mostly isn't
"Bonus tax" is a nickname for over-withholding. The 22% is a flat prepayment; your bonus is ordinary income taxed at your marginal rate once the year's brackets are applied. If your real rate sits under 22%, the surplus refunds; if it runs above, you cover the shortfall. In this page's $18,000 example, withholding falls about $1,570 short of the real tax, so you'd owe the rest. Just the 7.65% FICA slice is a real tax you won't get back.
Mississippi bonus tax FAQ
Does Mississippi have a separate bonus withholding rate?
No. Mississippi has no separate supplemental rate, so a bonus is withheld with the aggregate method — as if it were part of your regular wages.
Will I get some of my Mississippi bonus withholding back?
Often, yes — if your true marginal rate is below the 22% withheld, the difference refunds at filing; above 22%, you owe it. FICA is a true tax and never refunds.
Are bonuses taxed at a higher rate in Mississippi?
No. A bonus is ordinary income taxed at your normal marginal rate when you file; the flat 22% withheld is a prepayment, not a tax rate.
What is the Mississippi bonus tax rate in 2026?
Mississippi withholds the aggregate method on a separately paid bonus, on top of the flat 22% federal rate (37% above $1,000,000/yr) and 7.65% FICA. That's withholding, not your final tax.
Bonus tax calculators near Mississippi
Mississippi paycheck calculator · all state bonus tax calculators →
Sources
- IRS Publication 15 (2026) — Supplemental Wages (flat 22% / 37% above $1M)
- Mississippi income-tax status & rate: see the Mississippi paycheck calculator sources (state DOR, verified 2026-08-02).