Paymastr is a standalone payroll program that features built-in email support. You have the ability to manually update state and federal tax charts. Nontaxable deductions such as 401k are input as a percent of the gross. Payroll summaries include: current payroll, month, quarter, and year-to-date. Enter the hours worked as well as overtime, insurance, additional income, and other pay categories. The "additional income" field can be used if an employee is not hourly and/or is paid tips. It then calculates the withholding tax for federal, state, and Social Security plus Medicare based on exemptions claimed and marital status. Latest tax tables are installed.