UK vs California: take-home pay comparison
Side-by-side comparison of UK vs California take-home pay at common salary levels — tax bands, marginal rates, and net retention.
British workers considering a move to California (and Californians considering the UK) face very different tax structures even at similar gross-income levels. The UK applies a progressive income-tax stack with bands frozen until 2028 plus a flat-ish National Insurance schedule capped at 2% above £50,270. California stacks federal income tax + California state income tax + FICA, with the top federal marginal rate (37%) reachable above $626k and the top California rate (13.3%) above $1M.
This comparison applies each tax authority's 2025/26 published rates. Native currency on each side; FX is shown as an indicative pin only, not used to compute any line.
Side-by-side at common gross levels
GBP/USD shown at indicative parity — interpret native net values, not the FX-adjusted delta.
| Gross (annual) | United Kingdomnative: £ | United States — Californianative: $ | Net delta (right − left) |
|---|---|---|---|
| £40,000 / $40,000 | £32,320 (19.2%) | $33,418 (16.5%) | $1,098 |
| £80,000 / $80,000 | £56,957 (28.8%) | $61,199 (23.5%) | $4,241 |
| £120,000 / $120,000 | £75,914 (36.7%) | $85,586 (28.7%) | $9,671 |
| £200,000 / $200,000 | £117,158 (41.4%) | $134,308 (32.8%) | $17,150 |
Frequently asked questions
- How much more take-home does £80,000 yield in California vs United Kingdom?
- At £80,000 gross on each side using 2025/26 rates: United Kingdom retains £56,957 (28.8% effective), California retains $61,199 (23.5% effective). Native-currency comparison — no FX conversion applied.
- What is the marginal-rate difference between United Kingdom and California at £80,000?
- At £80,000 gross, the next 100 of gross retains £58 in United Kingdom (marginal rate 42.0%) and $61 in California (marginal rate 39.0%). This matters for bonus, overtime, or salary-sacrifice decisions — the marginal rate applies to the next unit earned, not the average.
- At what salary level is the take-home gap biggest between United Kingdom and California?
- Across the 40k–250k single-filer sweep, the largest net delta is at £250,000 gross: California net is higher by $19,809 per year. Above and below this point the gap is smaller, driven by the interaction of each side's band thresholds + social-contribution caps.
- What does this United Kingdom vs California comparison include?
- Both sides use each tax authority's published 2025/26 rates: income tax, social-insurance contributions, and any statutory levies routed through payroll. The numbers are the same ones the full /uk and /us/ca calculators produce — open either page for the full per-line breakdown.
- What does this comparison NOT model?
- Currency conversion is NOT applied — the table shows each side in its native currency. Use a live FX rate to convert if you need a single-currency view. Pension contributions, salary-sacrifice schemes, benefits-in-kind, region-specific surcharges (Scotland for UK, Comunidad Autónoma for ES, Bundesland for DE), and cost-of-living differences are not modeled here. The comparison is a tax-stack-only view.