South Carolina
$600
~6% est. state
- Total withheld
- $3,565
- Net bonus
- $6,435
- Federal + FICA
- $2,965
- Rank
- #12
South Carolina withholds $1 more state tax than Rhode Island on $10,000 bonus with $80,000 year-to-date wages (flat supplemental method).
By Sammy S. · Founder · AuthorUpdated for 2026
Key finding
$1 more state tax — net gap ~$1 ($6,435 vs $6,436).
$600
~6% est. state
$599
5.99% state
Total withholding gap: $1 (state drives most of the difference).
| Topic | South Carolina | Rhode Island |
|---|---|---|
| Withholding method | Aggregate / table (estimate) | Published flat supplemental |
| Supplemental rate | ~6% est. | 5.99% |
| Vignette state tax | $600 | $599 |
| Vignette federal + FICA | $2,200 + $765 | $2,200 + $765 |
| Vignette total withheld | $3,565 | $3,564 |
| Vignette net | $6,435 | $6,436 |
| Rank (curated) | #12 | #13 |
$80,000 YTD wages; engine flat supplemental method. State gap is state tax only; net columns include federal and FICA.
| Bonus | South Carolina state | Rhode Island state | State gap | SC net | RI net |
|---|---|---|---|---|---|
| $5,000 | $300 | $299.50 | $0.50 | $3,217.50 | $3,218 |
| $10,000 | $600 | $599 | $1 | $6,435 | $6,436 |
| $25,000 | $1,500 | $1,497.50 | $2.50 | $16,087.50 | $16,090 |
| $50,000 | $3,000 | $2,995 | $5 | $32,175 | $32,180 |
This page compares state supplemental withholding for South Carolina (SC) and Rhode Island (RI) on $10,000 bonus with $80,000 year-to-date wages (flat supplemental method), calculated from our engine (same engine as the bonus calculator).
South Carolina is higher by about $1 in state tax alone; net take-home favors Rhode Island by about $1.
No published flat supplemental rate (aggregate / table method). Educational estimate ≈6% — confirm with payroll tables.
Published state supplemental withholding at 5.99% on bonus and other supplemental wages.
South Carolina (Aggregate / table (estimate)): about 6% → $600 on the vignette.
Rhode Island (Published flat supplemental): about 5.99% → $599 on the vignette.
Official state agencies for this pair only are linked in the sources section — not every state in the hub.
Both states withhold $2,200 federal income tax under the Pub. 15 flat method (22% on $10,000).
FICA is $765 in each (Social Security + Medicare on this YTD/bonus pair). The take-home gap is almost entirely state supplemental withholding.
Above $1M supplemental wages with one employer, federal withholding uses 37% on the excess — still the same rule in both states.
The ladder recomputes engine results at $5k–$50k bonuses with $80,000 YTD wages.
If either state uses Vermont’s 30%-of-federal rule, Wisconsin bands, or an aggregate proxy, the gap may not scale as a simple constant percentage — check each ladder row.
Signing-bonus negotiations should still include regular wage tax and cost of living — not supplemental withholding alone.
Local city taxes (NYC, Philly wage tax, Ohio municipalities) are not included.
Aggregate-method stubs can differ from the flat-percentage estimates shown here.
Final Form 1040 liability depends on annual brackets, deductions, and credits — withholding is a prepayment.
Before treating the withholding gap as a job or relocation decision.
Vignette net: $6,435 (SC) vs $6,436 (RI).
Flat supplemental rates differ by state; federal 22% and FICA rules are the same. Withholding is not your final tax bill when you file.
NYC/local taxes, aggregate-method withholding, and equity vest timing are not modeled. Use the bonus calculator for custom amounts and YTD wages.
Compare any two states
Supplemental bonus withholding on a $10,000 bonus with $80,000 YTD wages.