SimpleBooks Pro goes beyond Invoice & Billing to become a full-featured business management application. It adds a Ledger, Supplier Management and Purchase Orders.
Most significantly, SimpleBooks Pro offers full-featured Payroll capabilities, including the ability to calculate Federal Income Tax, FICA, FUTA, Medicare, State Income Taxes, SUTA, SDI (where applicable), Local Taxes and Benefits. In addition, SimpleBooks Pro also allows you to account for AEIC payments (Advanced Earned Income Credit). SimpleBooks Pro also includes support for Daily, Weekly, BiWeekly, SemiMonthly and Monthly pay schedules, as well as support for the standard 0-10 withholding allowances.
Most importantly, SimpleBooks Pro Payroll Module was designed from the ground up with ease-of-use in mind, making it the easiest, most intuitive payroll application for OS X.