SYMMETRY
PaycheckCity
PAYROLL POINT
Symmetry PAYROLL Forms
Payroll Taxes
Payroll Talk
Payroll Goddess
Premiere Payroll Tax Research Library

Taming the Dragon - A Practical Guide to the Pennsylvania Local Earned Income Tax



Payroll-Taxes.com is a free online resource featuring a compilation of research, collaboration and web tools for use by payroll professionals and more including information about payroll tax articles, federal tax information and state tax information.

 
FYI...  All our calculators are able to address Supplemental withholding rates. Note that Supplemental is an option in the Federal Filing Status field.