Resources

Find helpful payroll-related resources below, including online forms, state websites and other useful information. Check back often as this page is updated.

Internal Revenue Service
Internal Revenue Service, Obtain an FID Number
Social Security Administration
US Department of Labor
US Citizenship and Immigration Services
US Child Support Enforcement Office
State Agencies (see below)

Employer’s Tax Guide Publication 15
Employer’s Tax Guide Publication 15-A
Employer’s Tax Guide Publication 15-B
Form SS-4
Form W-4
Form M-4
Form I-9

US Department of Labor Posters
MA Workplace Poster Requirements

MA Department of Revenue
Mass Unemployment
MA Department of Unemployment Insurance
RI Division of Taxation and Department of Labor Registration
CT DOR
CT DOL
KS DOR
KS DOL
Florida DOR
Ohio DOR
Ohio Dept of Job & Family Services
Virginia DOR and DOL