{"slug":"income-tax-uk","name":"United Kingdom Income Tax Calculator (2025/26)","category":"earn","tags":["tax","income"],"aliases":["United Kingdom tax calculator","tax calculator United Kingdom","United Kingdom income tax","income tax United Kingdom","income tax calculator United Kingdom","United Kingdom income tax rate","income tax United Kingdom rate","how much is income tax in United Kingdom","United Kingdom tax income","United Kingdom salary tax"],"region":"GB","tagline":"2025/26 United Kingdom income tax: tax owed, effective rate, marginal rate, and take-home pay.","endpoint":"https://xearno.tools/api/v1/tools/income-tax-uk","page":"https://xearno.tools/t/income-tax-uk","description":"Computes United Kingdom personal income tax for 2025/26 using the official progressive brackets, and explains the number the way it actually works: your marginal rate versus your effective rate, how far you are from the next bracket, and exactly what this model excludes.","inputSchema":{"type":"object","properties":{"annualIncome":{"description":"Annual income (GBP)","type":"number","minimum":0,"default":35000},"deduction":{"description":"Deductions (GBP) Allowance is built into the bracket table; add extra deductions here.","type":"number","minimum":0,"default":0}},"required":[],"additionalProperties":false},"methodology":["Cumulative progressive calculation: each slice of taxable income is taxed at its bracket's rate — 0% up to 12,570, 20% up to 50,270, 40% up to 125,140, … up to 45% at the top. Taxable income = annual income − deductions.","Basis: HMRC 2025/26 rates, England/Wales/NI; personal allowance built into the 0% band. Bracket tables are updated when the jurisdiction publishes new rates; the tax year is stated in the tool name so you never mistake stale rates for current ones.","Scope: personal income tax only. Excluded: National Insurance, the personal-allowance taper above £100,000, and Scottish rates. Real filings involve credits, reliefs, and personal circumstances this calculator deliberately does not guess at."],"usage":"POST https://xearno.tools/api/v1/tools/income-tax-uk with a JSON body matching inputSchema."}