As a contractor you are paid as a mixture of salary and commission on your contract.  This is because salary is subject to full tax and NI, and commission can be offset by any allowable expenses to save on tax and NI.  As salary is taxed in full, we keep this element of your wage as low as possible to maximise the amount you can earn tax-free.  The lowest rate we can pay your salary at is National Minimum Wage (NMW).  You will therefore see that your payslip shows your salary element as the number of hours you have been paid for at NMW.  You can see our payslip explanation in the Help section of our website.