Illinois
$495
~4.95% PIT state
- Total withheld
- $3,460
- Net bonus
- $6,540
- Federal + FICA
- $2,965
- Rank
- #24
Compare different states
2026
2026Illinois vs Indiana Bonus Tax
Illinois withholds $200 more state tax than Indiana on $10,000 bonus with $80,000 year-to-date wages (flat supplemental method).
By Sammy S. · Founder · AuthorUpdated for 2026
Key finding
Illinois withholds more state tax
$200 more state tax — net gap ~$200 ($6,540 vs $6,740).
Side-by-side bonus withholding scoreboard
Indiana
$295
~2.95% PIT state
- Total withheld
- $3,260
- Net bonus
- $6,740
- Federal + FICA
- $2,965
- Rank
- #39
Total withholding gap: $200 (state drives most of the difference).
Key takeaways — Illinois vs Indiana bonus tax
- Illinois withholds about $200 more state tax ($495 vs $295).
- Illinois: ~4.95% PIT (Flat PIT proxy (no separate table)). Indiana: ~2.95% PIT (Flat PIT proxy (no separate table)).
- Federal withholding is $2,200 in both states on this vignette (22% flat per IRS Pub. 15); FICA is $765 each.
- Illinois ranks #24; Indiana ranks #39 (#1 = highest state withholding).
- Model custom bonuses at /bonus-tax-calculator.
Rule contrast — Illinois vs Indiana
| Topic | Illinois | Indiana |
|---|---|---|
| Withholding method | Flat PIT proxy (no separate table) | Flat PIT proxy (no separate table) |
| Supplemental rate | ~4.95% PIT | ~2.95% PIT |
| Vignette state tax | $495 | $295 |
| Vignette federal + FICA | $2,200 + $765 | $2,200 + $765 |
| Vignette total withheld | $3,460 | $3,260 |
| Vignette net | $6,540 | $6,740 |
| Rank (curated) | #24 | #39 |
State withholding and net at different bonus sizes
$80,000 YTD wages; engine flat supplemental method. State gap is state tax only; net columns include federal and FICA.
| Bonus | Illinois state | Indiana state | State gap | IL net | IN net |
|---|---|---|---|---|---|
| $5,000 | $247.50 | $147.50 | $100 | $3,270 | $3,370 |
| $10,000 | $495 | $295 | $200 | $6,540 | $6,740 |
| $25,000 | $1,237.50 | $737.50 | $500 | $16,350 | $16,850 |
| $50,000 | $2,475 | $1,475 | $1,000 | $32,700 | $33,700 |
How to read this page
Illinois vs Indiana bonus tax in 2026
This page compares state supplemental withholding for Illinois (IL) and Indiana (IN) on $10,000 bonus with $80,000 year-to-date wages (flat supplemental method), calculated from our engine (same engine as the bonus calculator).
Illinois is higher by about $200 in state tax alone; net take-home favors Indiana by about $200.
No separate supplemental table; educational estimate uses the state’s flat PIT ≈4.95%.
No separate supplemental table; educational estimate uses the state’s flat PIT ≈2.95%.
How each state’s rate works
Illinois (Flat PIT proxy (no separate table)): about 4.95% → $495 on the vignette.
Indiana (Flat PIT proxy (no separate table)): about 2.95% → $295 on the vignette.
Official state agencies for this pair only are linked in the sources section — not every state in the hub.
Federal and FICA are the same on this vignette
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.
Same bonuses, different state tax
The ladder recomputes engine results at $5k–$50k bonuses with $80,000 YTD wages.
When both sides use flat (or flat-PIT proxy) rates, the dollar gap scales roughly with bonus size.
Signing-bonus negotiations should still include regular wage tax and cost of living — not supplemental withholding alone.
What this comparison excludes
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.
Who this Illinois vs Indiana comparison helps
Useful if…
- •Candidates weighing Illinois vs Indiana offers with cash bonuses
- •Payroll comparing multi-state supplemental setup
- •Editors quantifying high-tax vs no-tax state gaps
Use official tools if…
- •Local city taxes (NYC, Philly, Ohio municipalities)
- •Aggregate-method stubs that differ from flat rates
- •Year-end true-up if federal 22% under-withholds
Illinois vs Indiana checklist
Before treating the withholding gap as a job or relocation decision.
- 1Confirm Illinois and Indiana supplemental rules with each revenue department.
- 2Ask which withholding method payroll uses (flat vs aggregate).
- 3Check the bonus ladder for your award size.
- 4Open /bonus-tax-by-state/illinois and /bonus-tax-by-state/indiana for full profiles.
- 5Run both scenarios in /bonus-tax-calculator.
Vignette net: $6,540 (IL) vs $6,740 (IN).
What the state gap means
Flat supplemental rates differ by state; federal 22% and FICA rules are the same. Withholding is not your final tax bill when you file.
Limits of this comparison
NYC/local taxes, aggregate-method withholding, and equity vest timing are not modeled. Use the bonus calculator for custom amounts and YTD wages.
Illinois vs Indiana bonus tax FAQs
Illinois withholds about $200 more in state tax ($495 vs $295).
No on this vignette — both use the flat 22% federal supplemental method plus the same FICA rules. The gap is almost entirely state supplemental withholding.
Illinois: ~4.95% PIT. Indiana: ~2.95% PIT.
Indiana, by about $200.
No. This comparison is state supplemental withholding plus federal and FICA only.
Not on this vignette. Both use 22% flat federal supplemental withholding ($2,200) plus the same FICA rules.
Compare another pair
Compare any two states
Supplemental bonus withholding on a $10,000 bonus with $80,000 YTD wages.
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