Companies who pay employees in MA must register online with the MA Department of Revenue using a Federal EIN and register with the MA Division of Unemployment to receive an Employer Account Number. MA also requires employers to register their payroll provider with the MA DUA as an authorized third-party administrator to allow the provider to file unemployment taxes in MA.
MA DOR Federal Identification Number: WTH-99999999-999 ('WTH', then 8 digits, and 3 digits).
MA Paid Family Leave Identification Number: PFM-99999999-999 (PFM, then 8 digits, and 3 digits).
Labor and Workforce Development for unemployment taxes
Dept. of Revenue for withholding taxes
Employer Medical Assistance Contribution (EMAC)The Employer Medical Assistance Contribution (EMAC), which replaced the Unemployment Health Insurance (UHI) tax in 2014, helps to ... Learn more
Employers who use Zenefits Payroll to pay employees in Massachusetts must authorize Zenefits Payroll as a third party administrator (TPA) with the MA Department of Unemployment ... Learn more
The State of Massachusetts subtracts withholdings for FICA (Social Security and Medicare) taxes from employees' gross taxable wages before calculating their MA personal income w... Learn more
Starting on October 1, a new Massachusetts Paid Family & Medical Leave tax will go into effect and apply to worker paychecks. To learn more information, please reference the MA ... Learn more
In 2021, the Massachusetts Department of Unemployment Assistance adjusted the unemployment insurance (UI) tax rate to include a new COVID-specific employer charge, the COVID-19 ... Learn more