How do you calculate gross vs net pay?

Gross Pay is the salary for the period or the number of hours worked multiplied by the hourly rate. Then, deductions are made from gross pay to arrive at net pay. These deductions will vary depending on where the wages were earned. Typically, there will be a combination of Federal, State and possibly local taxes. These taxes may be income taxes, social security, unemployment, disability, etc. There may also be voluntary deductions for things like health insurance or a pension plan.