Welcome to Royston Parkin Doncaster Calculators.

Calculators Company car tax The tax you pay on your company car is based on the CO2 emissions of the car. This calculator will calculate your tax exposure on your company car. VAT This calculator will calculate the VAT that has been paid or will be paid on amounts entered. Payslip Check to see if you are having the correct amount of tax and NI deducted from your salary. Profit analyser This calculator will help you to forecast how your business performance will be affected by changes in key areas. Loan This calculator will help you check how much interest you will pay on a loan. Inheritance Calculate the Inheritance Tax to be paid on your estate. Gross profit margin Calculate your Gross Profit Margin. Savings Calculate how your savings will grow.