{"slug":"income-tax-uk","name":"United Kingdom Income Tax Calculator (2025/26)","category":"fortune","tags":["earning","tax","planning"],"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."}