Manually calculating payroll taxes is the process of manually computing taxes and deductions owed to government entities. This process typically involves taking an employee’s gross salary or wages, deducting mandatory payments such as Social Security and Medicare taxes, then applying additional taxes such as income tax withholdings based on information provided by the employee. Once all deductions have been taken into account, the final amount of money for take-home pay can be calculated. Calculating taxes manually can be a tedious and time consuming task, but it is necessary for a successful business in order to ensure that payroll taxes are correctly paid.