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Kansas vs California Bonus Tax

California withholds $523 more state tax than Kansas on $10,000 bonus with $80,000 year-to-date wages (flat supplemental method).

By Sammy S. · Founder · AuthorUpdated for 2026

Key finding

California withholds more state tax

$523 more state tax — net gap ~$523 ($6,535 vs $6,012).

Side-by-side bonus withholding scoreboard

Kansas

$500

5% state

Total withheld
$3,465
Net bonus
$6,535
Federal + FICA
$2,965
Rank
#19
Kansas profile →

California

$1,023

10.23% state

Total withheld
$3,988
Net bonus
$6,012
Federal + FICA
$2,965
Rank
#4
California profile →

Total withholding gap: $523 (state drives most of the difference).

Key takeaways — Kansas vs California bonus tax

  • California withholds about $523 more state tax ($500 vs $1,023).
  • Kansas: 5% (Published flat supplemental). California: 10.23% (CA DE 44 bonus/stock (10.23%)).
  • Federal withholding is $2,200 in both states on this vignette (22% flat per IRS Pub. 15); FICA is $765 each.
  • Kansas ranks #19; California ranks #4 (#1 = highest state withholding).
  • Model custom bonuses at /bonus-tax-calculator.

Rule contrast — Kansas vs California

TopicKansasCalifornia
Withholding methodPublished flat supplementalCA DE 44 bonus/stock (10.23%)
Supplemental rate5%10.23%
Vignette state tax$500$1,023
Vignette federal + FICA$2,200 + $765$2,200 + $765
Vignette total withheld$3,465$3,988
Vignette net$6,535$6,012
Rank (curated)#19#4

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.

BonusKansas stateCalifornia stateState gapKS netCA net
$5,000$250$511.50$261.50$3,267.50$3,006
$10,000$500$1,023$523$6,535$6,012
$25,000$1,250$2,557.50$1,307.50$16,337.50$15,030
$50,000$2,500$5,115$2,615$32,675$30,060

How to read this page

Kansas vs California bonus tax in 2026

This page compares state supplemental withholding for Kansas (KS) and California (CA) on $10,000 bonus with $80,000 year-to-date wages (flat supplemental method), calculated from our engine (same engine as the bonus calculator).

California is higher by about $523 in state tax alone; net take-home favors Kansas by about $523.

Published state supplemental withholding at 5% on bonus and other supplemental wages.

California DE 44: 10.23% flat on bonuses and stock options (other supplemental wages use 6.6%).

How each state’s rate works

Kansas (Published flat supplemental): about 5% → $500 on the vignette.

California (CA DE 44 bonus/stock (10.23%)): about 10.23% → $1,023 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 Kansas vs California comparison helps

Useful if…

  • •Candidates weighing Kansas vs California 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

Kansas vs California checklist

Before treating the withholding gap as a job or relocation decision.

  1. 1Confirm Kansas and California supplemental rules with each revenue department.
  2. 2Ask which withholding method payroll uses (flat vs aggregate).
  3. 3Check the bonus ladder for your award size.
  4. 4Open /bonus-tax-by-state/kansas and /bonus-tax-by-state/california for full profiles.
  5. 5Run both scenarios in /bonus-tax-calculator.

Vignette net: $6,535 (KS) vs $6,012 (CA).

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.

Kansas vs California bonus tax FAQs

California withholds about $523 more in state tax ($500 vs $1,023).

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.

Kansas: 5%. California: 10.23%.

Kansas, by about $523.

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.