When your take-home pay lands in your bank account each month, it can look underwhelming compared to the salary written into your contract. Telegraph Money has devised a calculator to show you exactly how much of your hard-earned money stays with you – and how much goes to the taxman. Our calculator also allows you to add in pension contributions, student loan payments and other benefits paid via “salary sacrifice” to give you a clear reflection of your pay packet, down to the last penny. Simply enter your annual salary into the calculator and fill or tick in the additional prompts if they are relevant to you. The results will show how much of your salary is diverted from your bank account, breaking it down by year, month and week. Each month, chunks of your salary are lost to the taxman and state, or saved for a later date via pension contributions. Here is a breakdown of the various deductibles you will, or could see, on your payslip. This is the biggest raid on your pay packet, with the average worker losing 20pc of their income to HM Revenue and Customs. An employee earning £50,000 a year will see £7,186...