UK PAYE employees only · Tax year 2025/26 · Estimates only (not advice) · Excludes student loans and non‑standard tax codes.

About Tax Calculator 365

Tax Calculator 365 provides free, client-side calculators for estimating UK take‑home pay. Calculations are performed locally in your browser; we do not require account creation.

Methodology

Income Tax is estimated using published PAYE thresholds and rates for the selected tax year and nation (Scotland vs the rest of the UK).
Personal Allowance taper is modelled by reducing allowance by £1 for every £2 of adjusted net income above £100,000 (simplified).
Employee National Insurance is estimated using Class 1 primary rates (category A) using annualised thresholds.
Figures are rounded to the nearest penny for display. Actual payroll outcomes can differ due to tax codes, pay periods, benefits and other deductions.