Income Imposto calculator (UK e US)
Income Imposto, National Insurance ou FICA e your effective e marginal rates, with the full band breakdown.
Sobre Income tax calculator (UK e US)
Income Imposto, National Insurance ou FICA e your effective e marginal rates, with the full band breakdown.
Faz parte da secção «Impostos e salário» do SmartCalcy. Funciona no seu navegador sem conta, usa a sua própria moeda e unidades (altere-as no topo da página) e dá estimativas apenas a título informativo, por isso consulte as orientações oficiais antes de confiar num resultado.
Como usar a Income tax calculator (UK e US)
O que calcula e quando usar
Estimates income Imposto, National Insurance (UK) ou Social Security e Medicare (US), your effective e marginal rates, e a band-by-band breakdown.
Como usar, passo a passo
- Choose where you Pagamento Imposto: England/Wales/Northern Ireland, Scotland ou the US.
- Enter your income Por Ano antes Imposto.
- Add pension ou 401(k) contributions paid before tax and, em the UK, a student loan plan.
- Read the Imposto, take-home Pagamento e marginal Taxa.
O que significa cada campo
- Income – Gross Pagamento por the Ano.
- Filing status (US) – Sets the standard deduction e brackets.
- Pension Pagas antes Imposto – Reduces taxable income.
- Student loan plan (UK) – Plan thresholds e rates decide repayments.
Como ler os resultados
- Income Imposto – The Soma de tax em each band.
- Effective Taxa – Income Imposto ÷ income.
- Marginal Taxa – Total tax on the next unidade de income, including National Insurance ou FICA.
- Imposto by band – How much was taxed A Cada Taxa.
A fórmula
UK: taxable income = income − personal allowance (12,570, reduced by 1 por every 2 over 100,000). Tax é 20% on the first 37,700 de taxable income, 40% to 125,140 e 45% above em England; Scotland uses six bands. National Insurance é 8% between 12,570 e 50,270 e 2% above. US: taxable income = income − standard deduction, taxed in 10% a 37% brackets.
Um exemplo prático
A UK taxpayer earning 50,000 has a personal allowance de 12,570, so 37,430 é taxable at 20% por 7,486 de tax. National Insurance é 2,994, take-home pay é 39,520 e the marginal rate é 28%.
Premissas e limites
- UK: standard Imposto code, Não other income, Não Marriage Allowance ou benefits.
- US: federal Imposto only with the standard deduction. Estado taxes, Créditos e itemised deductions are excluded.
- Pension contributions are treated as Pagas antes Imposto but not antes NI.
Erros comuns
- Applying the top rate a all income. Only income em each band é taxed A that band’s Taxa.
- Forgetting National Insurance ou FICA.
Perguntas frequentes
Why é my marginal rate 60% between 100,000 e 125,140 em the UK?
The personal allowance é withdrawn as income rises, so each extra pound é taxed at 40% plus the lost allowance, an effective 60% before NI.
Does Scotland have different rates?
Yes. Scotland sets its own bands e rates por non-savings income. Choose Scotland a see them.
Dated rules: UK tax year 2026 para 2027 (6 April 2026 para 5 April 2027), de GOV.UK. Rates e thresholds change each year, so check GOV.UK before relying on a figure. Dated rules: US federal figures por tax year 2026 (IRS Rev. Proc. 2025-32 e IRS notices). These calculators are estimates por planning, not tax advice.
Ferramentas relacionadas
Detalhes
- Personal allowance
- £12,570
- Taxable income
- £37,430
- National Insurance
- £2,994
- Total Imposto e deductions
- £10,48021% de income
- Effective Imposto Taxa (income Imposto only)
- 15%
- Marginal Taxa on your next pound
- 28%income Imposto plus deductions on extra Pagamento
- Take-home Por Ano
- £39,520
Imposto by band
| Band | Taxa | Imposto |
|---|---|---|
| £0 a £37,430 | 20% | £7,486 |