USA vs UK Income Tax Compared: What $100,000 Really Leaves You in 2026
Headline answer: a $100,000 US salary keeps about $79,180 after 2026 federal tax and FICA in Texas, while a £100,000 UK salary keeps about £68,557.40 after income tax and National Insurance in London. Below is every line of the math, plus the state-tax step most usa vs uk income tax comparisons skip.
Filing assumptions used for all math on this page: US: single filer, 2026 standard deduction ($16,100), employee wages, no state tax in baseline. UK: England/Wales/NI, 2026/27 bands, Category A employee NI, no student-loan deduction in headline figure.
Scenario A — USA: $100,000 Salary, Texas Baseline (No State Income Tax)
A single filer earning $100,000 in wages claims the 2026 standard deduction of $16,100. Taxable income is therefore $83,900. The 2026 single brackets tax the first $12,400 at 10%, the slice from $12,401 to $50,400 at 12%, and the slice from $50,401 up to $105,700 at 22%. FICA applies to the full salary: Social Security at 6.2% (the whole $100,000 is under the 2026 wage base of $184,500) and Medicare at 1.45% with no cap.
Gross: $100,000 Less standard deduction (single 2026): - $16,100 Taxable income: = $83,900 Federal tax: 10% x $12,400 = $1,240.00 12% x ($50,400 - $12,400 = $38,000) = $4,560.00 22% x ($83,900 - $50,400 = $33,499) = $7,369.78 Federal total: = $13,169.78 -> $13,170 FICA: Social Security 6.2% x $100,000 = $6,200 Medicare 1.45% x $100,000 = $1,450 FICA total: = $7,650 Combined federal + FICA: = $20,820 Take-home (TX baseline): = $79,180
Texas charges no state income tax, so $79,180 is the pre-state baseline. California and New York add state income tax on top of this figure — enter your state in our US calculator to see your exact take-home. State tax is the step federal-only comparisons skip.
Try it: run your own state through our US federal income tax calculator or estimate a refund with our tax refund calculator.
$100k in Texas vs London: Pick Your US State
InteractiveTexas adds $0 to the $100k baseline above, so the $79,180 take-home stands before health costs. The London figure below is final for income tax plus National Insurance.
Open the US calculator to see your exact take-home for your state →
Scenario B — UK: £100,000 Salary, London (England Bands)
An employee earning £100,000 in London keeps the full £12,570 Personal Allowance (at exactly £100,000 there is no taper). The basic-rate band covers £37,700 at 20%, and everything from £50,270 to £100,000 falls in the 40% higher-rate band. Employee National Insurance (Category A) charges 8% between the Primary Threshold (£12,570) and the Upper Earnings Limit (£50,270), then 2% above it. No student-loan deduction is included in the headline figure.
Gross: £100,000 Personal Allowance (income exactly £100k, full allowance): £12,570 Income tax: Basic 20% x £37,700 = £7,540.00 Higher 40% x (£100,000 - £50,270 = £49,730) = £19,892.00 Income tax total: = £27,432.00 Employee National Insurance (Category A): 8% x (£50,270 - £12,570 = £37,700) = £3,016.00 2% x (£100,000 - £50,270 = £49,730) = £994.60 NI total: = £4,010.60 -> £4,011 Combined income tax + NI: = £31,442.60 -> £31,443 Take-home: = £68,557.40 -> £68,557
Check your own UK figure with our UK income tax calculator.
A Note on the Currency Trap: $100k Is Not £100k
$100,000 and £100,000 are different amounts of money. A $100k earner moving to the UK is not offered '£100k' — the scenarios above compare a round $100k US salary with a round £100k UK salary so each side's bands are visible. For illustration only: £1 = $1.27 (illustrative rate, labelled — check a live rate for your move date). At that illustrative rate, £68,557 take-home is about $87,067; $79,180 take-home is about £62,347. Do not use a live FX guess in page copy — keep the 'illustrative' label.
UK vs US Salary Comparison at a Glance
The table below puts the two worked examples side by side. Percentages are effective rates on gross pay (US: $20,820 on $100,000 = 20.82%; UK: £31,442.60 on £100,000 = 31.44%).
| Item | USA — $100,000 (Texas) | UK — £100,000 (London) |
|---|---|---|
| Gross pay | $100,000 | £100,000 |
| Tax-free amount | $16,100 standard deduction (single, 2026) | £12,570 Personal Allowance (2026/27) |
| Income tax | $13,170 federal | £27,432 (£7,540 basic + £19,892 higher) |
| Payroll tax | $7,650 FICA ($6,200 Social Security + $1,450 Medicare) | £4,010.60 employee NI (£3,016 at 8% + £994.60 at 2%) |
| Combined deductions | $20,820 (20.82% effective) | £31,442.60 (31.44% effective) |
| Take-home pay | $79,180 | £68,557.40 |
| Local income tax | Texas: $0 (California / New York add state tax) | London: no local income tax; figure is final |
| Health cover | Before health insurance (see note below) | NHS funded through tax and NI (see note below) |
Are Taxes Higher in the UK or the US? The State-Tax Answer
Most USA-vs-UK tax comparisons stop at US federal tax — which flatters the American side. The United States also taxes you by state: Texas adds $0 to the $100k baseline above, while California or New York adds thousands. The UK has no local income tax, so the London figure is final for income tax plus National Insurance. Use the state picker below: '$100k in Texas vs London' keeps about $79,180 before state tax; your state decides what survives after it.
Browse all head-to-head guides in our tax comparison hub, and see current US federal tax brackets for every filing status.
US vs UK Income Tax Brackets Behind the Math
The US uses seven 2026 federal brackets from 10 to 37 percent with a $16,100 single standard deduction. England, Wales and Northern Ireland use 20, 40 and 45 percent above a £12,570 Personal Allowance. The UK also charges 8 and 2 percent employee National Insurance on earnings.
| UK Band (England, Wales, NI — 2026/27) | Taxable Income | Rate |
|---|---|---|
| Personal Allowance | Up to £12,570 | 0% |
| Basic rate | £12,571 – £50,270 | 20% |
| Higher rate | £50,271 – £125,140 | 40% |
| Additional rate | Over £125,140 | 45% |
The standard Personal Allowance for 2026/27 is £12,570, frozen until 5 April 2031. It tapers by £1 for every £2 of income above £100,000 and reaches zero at £125,140. The basic-rate limit is £37,700, giving the £50,270 higher-rate threshold. Employee National Insurance (Category A) is 0% below the £12,570 Primary Threshold, 8% between £12,570 and the £50,270 Upper Earnings Limit, and 2% above it.
Note: Scotland sets its own income tax bands, so this page uses England, Wales and Northern Ireland bands throughout. See the official rates at GOV.UK income tax rates.
UK vs US Take-Home Pay After Health Costs
The UK take-home of £68,557 funds the NHS through general taxation and National Insurance — no monthly premium at the point of use. The US take-home of $79,180 is before health insurance: the average single employee premium contribution plus deductible can erase the headline US advantage. Compare take-home pay after health costs, not before. Neither system is 'free' — the UK prepays through tax, the US pays at the employer and the hospital.
US and UK Double Taxation Agreement and the $132,900 Exclusion
Americans working in London still file US tax returns on worldwide income. The US–UK double-taxation treaty plus foreign tax credits usually prevent paying full tax twice, and qualifying expats can exclude up to $132,900 of 2026 foreign earned income under the Foreign Earned Income Exclusion (Form 2555). You still file — exclusion is not exemption from filing. Take cross-border advice before moving, investing, or selling property.
Why Are US Salaries Higher Than UK Salaries?
US nominal salaries often look higher, but headline pay is only half the story. Compare after-tax income after rent, healthcare, pension contributions and state taxes: a $100k Texas paycheck and a £100k London paycheck face very different living costs and benefits today. Run both sides yourself with our us vs uk tax calculator for the American side and our UK income tax calculator for the British side, then compare the take-home lines — not the gross offers.
Sources for Every Figure on This Page
- UK income tax rates and Personal Allowance: GOV.UK — Income Tax rates
- UK rates and allowances publication: GOV.UK — Income Tax rates and allowances
- Allowance freeze to 5 April 2031: GOV.UK — Threshold freeze policy paper
- UK bands legislation (20/40/45% for 2026-27): Finance Act 2026, Part 1
- National Insurance rates: GOV.UK — NI rates and allowances and employer rates and thresholds 2026 to 2027
- NI categories: GOV.UK — NI rates and categories
- Student loan Plan 2 threshold: GOV.UK — Repaying your student loan
- US 2026 standard deduction ($16,100 single): IRS — 2026 inflation adjustments
- US 2026 brackets: Tax Foundation — 2026 tax brackets
- Social Security wage base 2026 ($184,500): SSA — Contribution and benefit base and SSA — Maximum taxable earnings
- Foreign Earned Income Exclusion 2026 ($132,900): IRS — Figuring the Foreign Earned Income Exclusion
This USA-vs-UK comparison has been verified against the IRS 2026 inflation adjustments (standard deduction and brackets), SSA wage-base figures, and GOV.UK income tax and National Insurance rates. Every arithmetic line in both worked examples is shown above and can be recomputed by hand. Currency conversion uses a labelled illustrative rate only. All computations on this page run in your browser — your financial data never leaves your device.
Frequently Asked Questions
On a $100k salary, the UK usually takes more in direct payroll deductions than a low-tax US state. Our 2026 math shows about $20,820 US federal plus FICA versus about £31,443 UK income tax plus National Insurance. Add US state tax or higher UK earnings and the gap changes fast.
Yes, headline US federal rates often look lower than UK rates, especially beside the 40 percent higher rate and National Insurance. But Americans add FICA, state tax, health insurance and property tax. Compare total burden and take-home pay, not just one marginal income tax bracket or rate.
The US uses seven 2026 federal brackets from 10 to 37 percent with a $16,100 single standard deduction. England, Wales and Northern Ireland use 20, 40 and 45 percent above a £12,570 Personal Allowance. The UK also charges 8 and 2 percent employee National Insurance on earnings.
US nominal salaries often look higher, but UK take-home pay includes NHS coverage while Americans buy health insurance separately. Compare after-tax income after rent, healthcare, pension contributions and state taxes. A $100k Texas paycheck and a £100k London paycheck face very different living costs and benefits today.
Most people do not pay full tax twice because the US-UK double taxation treaty plus foreign tax credits generally offset one liability against the other. Americans in Britain still file US returns and may claim the Foreign Earned Income Exclusion. Get cross-border advice before moving, investing or selling property abroad.
Texas has no state income tax, so a $100k single filer keeps about $79,180 after 2026 federal and FICA in our baseline. California or New York then adds thousands more state tax. London has no local income tax, but UK income tax plus National Insurance already totals about £31,443 on £100k.