United States vs United Kingdom: Tax Comparison

Compare income tax rates and take-home pay between United States and United Kingdom

You'd keep $1,663 more in United States

United States · California

26.2% tax

United Kingdom · London

27.9% tax

$139/mo difference

Side-by-side breakdown

United States · California

2025

26%

Income

Gross Salary$100,000
Personal Allowance-$15,750
Taxable Income$84,250

Taxes & Contributions

10% Bracket-$1,193
12% Bracket-$4,386
22% Bracket-$7,871
1% Bracket-$104
2% Bracket-$285
4% Bracket-$571
6% Bracket-$907
8% Bracket-$1,142
9.3% Bracket-$980
Social Security (OASDI)-$6,200
Medicare-$1,450
California State Disability Insurance (SDI)-$1,100
Total Taxes-$26,188
NET ANNUAL PAY$73,812
Per Month$6,151
Effective Rate26.2%

United Kingdom · London

2025-26

28%

Income

Gross Salary$100,000
Personal Allowance-$16,845
Taxable Income$83,155

Taxes & Contributions

Basic Rate-$10,105
Higher Rate-$13,053
National Insurance (Class 1 Employee)-$4,694
Total Taxes-$27,852
NET ANNUAL PAY$72,148
Per Month$6,012
Effective Rate27.9%

Tax rate by income level

United Kingdom
United States

Understanding the difference

Two-Tier vs Three-Tier

The US uses more brackets but lower top rates; the UK compresses everything into three bands with a brutal 45% top rate. America's system looks complicated but rewards middle-income earners more generously. The UK's simplicity masks how fast the tax burden climbs as you earn more.

Healthcare: Baked In vs Separate

UK tax funds the NHS directly, so your National Insurance feels like insurance. US workers pay income tax plus separate Medicare/Social Security, making it harder to see what you're actually buying. Philosophically opposite systems: one bundled, one itemized.

California's Hidden Bite

If you're in the US, state tax can rival federal; California alone adds 13.3% at the top. The UK has no regional income tax anywhere. For high earners, this swings the comparison dramatically in the UK's favor despite its higher national rates.

Who Actually Wins

Mid-career earners and families: America wins by a mile, especially with deductions. High earners over £100k: UK's simplicity and no state tax cuts through the pain. Neither system is a bargain; you're just choosing which inefficiencies you can live with.

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