Massachusetts Payroll Taxes: 2026 Employer Guide

Last updated: September 2026

Running payroll in Massachusetts involves more than withholding income tax from an employee’s paycheck. Employers may also be responsible for unemployment contributions, Paid Family and Medical Leave (PFML), and regular state tax filings and payments.

Whether you're hiring your first employee or reviewing an existing payroll setup, understanding the basic Massachusetts payroll requirements can help you avoid missed registrations, late filings, and unexpected notices.

Massachusetts Income Tax Withholding

Massachusetts employers generally must withhold state income tax from wages paid to employees working in Massachusetts. For 2026, the Massachusetts income tax rate on wages is 5%, with an additional 4% surtax applying above the applicable annual income threshold.

Employees generally complete Form M-4, Massachusetts Employee’s Withholding Exemption Certificate, which employers use along with the state withholding tables to calculate the appropriate amount of Massachusetts income tax to withhold.

Employers report and pay Massachusetts withholding through MassTaxConnect. How frequently an employer must file and pay depends on the amount of Massachusetts income tax withheld. Smaller employers may file quarterly or annually, while employers with larger withholding liabilities may have monthly or more frequent payment requirements.

Massachusetts Unemployment Insurance

Most Massachusetts employers are responsible for state unemployment insurance through the Massachusetts Department of Unemployment Assistance (DUA).

Unlike income tax withholding, unemployment insurance contributions are paid by the employer and are not deducted from an employee’s paycheck. Each employer is assigned a contribution rate by DUA. For 2026, the standard new-employer contribution rate is 2.42%, while the new-employer rate for employers in the construction industry is 6.08%. Established employers generally receive an experience-based rate.

Massachusetts unemployment contributions generally apply to the first $15,000 of wages paid to each employee during the calendar year. Employers report wages, file quarterly unemployment returns, and pay contributions through Unemployment Services for Employers, the Massachusetts DUA's online system.

Because unemployment rates can change from year to year, employers should make sure the correct DUA rate is being used in payroll at the beginning of each calendar year.

Massachusetts Paid Family and Medical Leave (PFML)

Massachusetts Paid Family and Medical Leave adds another layer to payroll for most employers with Massachusetts employees.

For W-2 employees, PFML generally applies regardless of whether an employee is full-time, part-time, seasonal, temporary, on-call, or per diem. Employers should not assume an employee is excluded from PFML simply because they work limited or irregular hours.

For 2026, employers with 25 or more covered individuals are responsible for a total PFML contribution of 0.88% of eligible wages. The contribution consists of a 0.18% family leave portion and a 0.70% medical leave portion. Up to 0.46% may be withheld from covered individuals, while employers are responsible for the remaining 0.42% medical leave contribution.

Employers with fewer than 25 covered individuals are not required to pay an employer share. They are still responsible for withholding and remitting the covered individual contribution, which is 0.46% for 2026.

PFML contributions are reported quarterly, and employers file PFML returns and make contribution payments through MassTaxConnect. Employers should review their covered workforce count each year because workforce size determines whether an employer contribution is required.

Payroll Filings and Deadlines

Payroll isn't just about producing paychecks. Massachusetts employers have recurring federal and state filing and payment responsibilities throughout the year.

Depending on the business, those responsibilities may include Massachusetts withholding returns and payments, quarterly unemployment reporting and contributions, PFML reporting and contributions, federal payroll tax deposits and quarterly Form 941 filings, and annual W-2 and W-3 reporting.

The filing schedule isn't necessarily the same for every employer. For example, Massachusetts withholding filing frequency is based on the amount of tax withheld. Unemployment and PFML reporting generally follow quarterly schedules.

This is also why payroll setup matters. Using the wrong tax rate, missing a registration, or assuming a filing has been handled can create problems months later when a state or federal notice arrives.

Starting Payroll in Massachusetts?

A business hiring employees in Massachusetts may need accounts with several different agencies. Massachusetts income tax withholding is administered by the Department of Revenue, unemployment insurance is administered by the Department of Unemployment Assistance, and PFML is administered by the Department of Family and Medical Leave.

Getting those accounts established — and making sure the correct account numbers, rates, and filing frequencies are reflected in payroll — is an important part of getting payroll started correctly.

When Payroll Isn't Quite as Self-Service as It Sounds

Self-service payroll can seem simple when everything is running smoothly. The difference often becomes clear when there’s a question, a tax notice, a registration issue, or something just doesn’t look right.

Massachusetts payroll has its own agencies, systems, rates, and requirements. When a problem comes up, it helps to work with someone who knows Massachusetts payroll and the agencies involved — rather than explaining a state-specific issue to a support representative who may be working from somewhere else.

Payroll Northeast has experienced payroll professionals on the ground in Massachusetts who understand the state’s payroll requirements and are here when questions come up.

Need Help With Massachusetts Payroll?

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