Uk Advance Salary Calculator Enter UK Income Tax Details Tax year 2025/26 2024/25 Base salary (£) Salary period Per yearPer monthPer week Pension contribution (£ per year) Age Under 6565+ Overtime entries (add multiples) Month JanuaryFebruaryMarch AprilMayJune JulyAugustSeptember OctoberNovemberDecember Overtime hours Overtime rate (£/hour) Add Overtime Clear All OT Overtime list Patch v3.4: calculation fixed to per-period monthly thresholds. Layout unchanged. Your Payslip Wage Summary Monthly breakdown