We provide the .Net component and payroll tax data, and we monitor each jurisdiction for changes. Our TaxControls component gives you easy access to Federal, State, and Local withholding tax information, all available programmatically.

You can try it out yourself:

  1. File size is around 205K.
  2. Using Windows Explorer, double-click on the file 'TaxControls.NET.exe' to install the demo application.