Calculating a regular paycheck? Try our South Carolina paycheck calculator →
Paid hourly? Try our South Carolina hourly paycheck calculator →
How Bonuses Are Taxed in South Carolina (2026)
A bonus paid on a separate check in South Carolina has a flat 22% federal tax withheld (37% on cumulative supplemental wages over $1,000,000 in a year), 7.65% FICA, and South Carolina state income tax at your marginal rate. Withholding is not a higher tax rate — it is just how much your employer holds back up front; your actual tax on the bonus is settled when you file, and any over-withholding comes back as refund.
| Component | Rate on the bonus |
|---|---|
| Federal income tax (supplemental, percentage method) | 22% flat · 37% above $1,000,000/yr |
| Social Security | 6.2% (up to $184,500 of total wages) |
| Medicare | 1.45% · +0.9% above $200,000 |
| South Carolina state tax | Your marginal bracket rate |
Some employers instead use the aggregate method — adding the bonus to your regular paycheck and withholding as if that were every check — which can withhold more or less than the flat 22%. The calculator above uses the flat-rate (percentage) method.
South Carolina Bonus Take-Home by Amount (2026)
Flat-rate (percentage) method, single filer, bonus paid separately on top of a $65,000 salary. Enter your own numbers in the calculator above — this table is a starting point.
| Bonus | Federal (22%) | FICA | South Carolina tax | Take-home |
|---|---|---|---|---|
| $1,000 | $220 | $77 | $52 | $651 |
| $2,500 | $550 | $191 | $130 | $1,629 |
| $5,000 | $1,100 | $383 | $261 | $3,257 |
| $10,000 | $2,200 | $765 | $521 | $6,514 |
| $15,000 | $3,300 | $1,148 | $782 | $9,771 |
| $25,000 | $5,500 | $1,913 | $1,303 | $16,285 |
How South Carolina Paycheck Tax Is Calculated (2026)
Source: South Carolina Department of Revenue| Taxable income bracket | Rate |
|---|---|
| $0 – $30,000 | 1.99% |
| $30,000 – + | 5.21% |
Standard deduction (single): $15,000, subtracted from gross income before applying brackets.
Federal Tax & FICA (shared across all states)
| Filing status | Standard deduction |
|---|---|
| Single | $16,100 |
| Married Filing Jointly | $32,200 |
| Head of Household | $24,150 |
| Federal brackets (all filing statuses) | 10% / 12% / 22% / 24% / 32% / 35% / 37% |
|---|---|
| Social Security | 6.2% up to $184,500 wage base |
| Medicare | 1.45% on all wages, +0.9% above $200,000 single/HoH, $250,000 MFJ |
⚠️ South Carolina's married-filing-jointly and head-of-household state brackets have not yet been independently verified against the primary source above — this calculator uses South Carolina's single-filer brackets as an estimate when those statuses are selected.
Guideline version 2026-SC-v1 · Last verified 2026-07-26
South Carolina Bonus Tax FAQ
What are South Carolina's income tax brackets for 2026?
South Carolina uses 2 marginal brackets ranging from 1.99% to 5.21%.
How much is take-home pay on $65,000 in South Carolina?
On a $65,000 gross salary, a single filer in South Carolina takes home roughly $51,987/year (about $4,332.25/month) after federal tax, FICA, and state tax.
What deductions does South Carolina apply before taxing my income?
South Carolina applies a $15,000 standard deduction, before its marginal bracket schedule. See the "How South Carolina Paycheck Tax Is Calculated" section above for the exact formula.
Does this estimate change if I'm married or have dependents?
This calculator uses single-filer figures only (v1 scope). Married filing jointly typically uses different federal and South Carolina state brackets and a larger standard deduction — your actual take-home pay will differ. Dependents can also reduce federal withholding via the W-4. Check South Carolina Department of Revenue's married-filing-jointly tables for a precise figure.
Methodology & Source
South Carolina state tax figures sourced from South Carolina Department of Revenue (https://dor.sc.gov/), citing H.4216 (signed 2026-03-30) — 2-bracket overhaul, 1.99% under $30,000 / 5.21% above, decoupling from the federal standard deduction. Federal brackets, standard deductions (single/MFJ/HoH), and FICA constants sourced from the IRS (Revenue Procedure 2025-32; married-filing-jointly Additional Medicare threshold of $250,000 is a separate, unindexed statutory figure). South Carolina's married-filing-jointly and head-of-household figures are not yet independently verified and currently fall back to single-filer brackets — see the caveat in the formula section above.
Bonus federal withholding uses the flat supplemental-wage rate (22%, 37% above $1,000,000 cumulative supplemental wages/year), per IRS Publication 15 (Circular E), Employer's Tax Guide, 2026 edition — the alternative "aggregate method" is not modeled. South Carolina publishes no separate supplemental withholding rate, so the calculator estimates the state tax on the bonus from your marginal bracket.
This is an estimate based on standard single-filer federal, FICA, and SC state calculations. Actual withholding may differ based on your W-4 elections, pre-tax deductions, and other factors. H.4216 replaces the federal standard deduction with a new "South Carolina Income Adjusted Deduction" (SCIAD) of $15,000 for single filers — but that amount phases out on a sliding scale between $40,000 and $95,000 of federal AGI (numerator = AGI over $40,000, denominator = $55,000). This estimate applies the full $15,000 regardless of income, which understates SC tax for filers in that phase-out band. Verify at dor.sc.gov for high-precision use.
Guideline version: 2026-SC-v1 · Effective: 2026-01-01 · Last verified: 2026-07-26