Payslip HomeResourcesCalculatorsPayslip 2017/18 2017/18 Scotland 2016/17 Check your payslipThis payslip calculator performs monthly calculations for the 2017/18 tax year on a Month 1 basis. These deductions should approximate to your monthly payslip. Please see the explanatory notes below.The calculator calculates the liability based on a personal allowance of £11,500.Your payslip information Your gross pay (£): * You receive this: Monthly Weekly The numerical part of your tax code (removing all letters): For example, if your tax code is 1150L enter 1150. (If you are unsure of your tax code enter 810, which represents the standard personal allowance for a single or married person) If you have one of these tax codes please select it from the list: KBRDOD1NT Do you have a student loan?: Yes, Plan 1 Yes, Plan 2 Please note: Different payroll packages do give different results. The results given by our calculator may not therefore agree exactly with your payslip but will be approximately correct For calculating gross pay from net pay you will need to make an initial guess for the gross figure and then start amending that figure in the appropriate direction until you arrive at the target net pay figure. For directors the NI is calculated on a monthly basis and not on an earnings basis.