Massachusetts Remote Employee Tax Withholding: Flat 5% and 9% on Gains

Massachusetts is one of the higher-tax states in New England, applying a flat 5.00% income tax on most income plus a 12.00% rate on short-term capital gains, layered with the state's distinctive Paid Family and Medical Leave (PFML) program that requires employer and employee payroll contributions. Unlike most neighboring states, Massachusetts has no reciprocity agreements, meaning every cross-border commuter faces dual-state tax issues and the credit-for-taxes-paid mechanism. This guide walks through the Massachusetts tax landscape, residency rules, withholding for residents and non-residents, the absence of reciprocity, SUI through the Massachusetts Department of Unemployment Assistance (DUA), PFML administration, out-of-state employer obligations, the credit for taxes paid to other states, Massachusetts-specific wage laws including the Earned Sick Time Law, recent developments, and common payroll mistakes.

The Massachusetts Tax Landscape

Massachusetts levies a flat individual income tax at 5.00% on most categories of taxable income, including wages, salaries, interest, dividends, and long-term capital gains, under Massachusetts General Laws Chapter 62. The 5.00% rate was constitutionalized by voter approval of Question 1 in November 2022, which added a 4.00% surtax on income above $1 million, producing a combined top rate of 9.00% on income over the $1 million threshold (indexed for inflation). Short-term capital gains and long-term gains from collectibles are taxed at 12.00%, which is among the highest short-term capital gains rates in any state. The Massachusetts Department of Revenue (MA DOR) administers the income tax and publishes annual guidance on rates and brackets.

For payroll purposes, Massachusetts imposes three employer-side obligations: state income tax withholding at 5.00% on wages (above the threshold the additional 4.00% is generally collected through estimated taxes rather than withholding), State Unemployment Insurance (SUI) paid by the employer on the first $15,000 of wages per employee per year, and Paid Family and Medical Leave (PFML) contributions shared between employer and employee on wages up to the Social Security wage base. Massachusetts does not have a separate state disability insurance program outside PFML, and no local income tax outside the small Boston area wage-and-hour rules. The MA DOR administers income tax withholding, the Massachusetts DUA administers SUI, and the Massachusetts Department of Family and Medical Leave (DFML) administers PFML. Combined employer payroll costs in Massachusetts are among the highest in New England.

Massachusetts Residency Rules

Massachusetts residency is determined under three categories: resident, non-resident, and part-year resident, all codified in M.G.L. c. 62. A resident is an individual domiciled in Massachusetts, regardless of where they are physically present during the tax year. Domicile is the place where an individual has their true, fixed, and permanent home and to which they intend to return whenever absent. Once established, domicile persists until the individual establishes a new domicile through physical presence in a new jurisdiction combined with intent to remain there indefinitely. The MA DOR applies a multi-factor domicile test that examines family location, business activities, time spent inside and outside Massachusetts, real and tangible property holdings, and persistence of Massachusetts ties such as voter registration, driver's license, vehicle registration, and banking relationships. Massachusetts residents are taxed on worldwide income regardless of where it is earned.

Massachusetts also has a statutory residency rule that applies when an individual maintains a permanent place of abode in Massachusetts and spends 183 or more days of the tax year inside Massachusetts. The 183-day threshold is the standard bright-line test, and Massachusetts counts any part of a day as a full day except for transit days. A part-year resident who established or abandoned Massachusetts domicile during the tax year files Form 1-NR/PY and reports income as a resident for the resident period and as a non-resident for the non-resident period. Massachusetts does not have a special safe-harbor rule like New York's 30-day rule, but the MA DOR has historically taken a more measured approach to remote-work audits than New York or California. Any individual with significant Massachusetts presence should track day counts carefully and document days outside the state with travel receipts, lodging receipts, and similar evidence.

Massachusetts Withholding for Residents

Massachusetts residents are subject to Massachusetts income tax on all income regardless of source, and employers must withhold Massachusetts income tax from wages paid to Massachusetts residents. The withholding calculation uses Form M-4, the Massachusetts Employee's Withholding Exemption Certificate, which is separate from the federal Form W-4. The M-4 collects the employee's withholding exemptions and additional withholding amounts. Massachusetts does not have a standard deduction; instead it uses personal exemptions that reduce taxable income. For 2025 the personal exemption is $4,400 for single filers, $8,800 for married filing jointly, $4,400 for married filing separately, and $6,800 for head of household. An additional exemption of $1,000 is available for blind filers, and $1,000 for age 65 or older.

The Massachusetts withholding formula is straightforward: subtract the personal exemption (multiplied by the number of claimed exemptions) from gross wages, then multiply the result by 5.00%. For an employee claiming one exemption on $50,000 annual wages, withholding is approximately $2,280 per year. Supplemental wages (bonuses, commissions, and similar payments) are subject to Massachusetts supplemental withholding at 5.00% with no exemption adjustment, per MA DOR Publication TIR 04-17. Employees who have non-wage income or who expect to owe more than their withholding can request additional withholding on Form M-4. Employees can also claim exemption from Massachusetts withholding on Form M-4 if they had no Massachusetts income tax liability in the prior year and expect none in the current year, which is rare for wage earners. The 4.00% millionaire surtax on income above $1 million is generally collected through estimated tax payments rather than through payroll withholding, but high-earning employees may request additional withholding on Form M-4 to cover the surtax liability.

Massachusetts Withholding for Non-Residents

Massachusetts non-residents are subject to Massachusetts income tax only on Massachusetts-source income. For employees, Massachusetts-source income means wages earned while physically performing services in Massachusetts. A non-resident employee who works entirely outside Massachusetts for a Massachusetts employer has no Massachusetts-source wages and no Massachusetts withholding obligation. Non-resident withholding is computed by allocating the employee's annual wages across states based on days worked in each state, then applying Massachusetts withholding to the Massachusetts-allocated portion. Massachusetts does not enforce a convenience rule for non-resident employees of Massachusetts employers who work remotely outside Massachusetts, so a non-resident working remotely from New Hampshire, Maine, or another state has no Massachusetts-source wages.

Non-resident employees file Form 1-NR, the Massachusetts Nonresident Income Tax Return, to report Massachusetts-source income and compute the non-resident tax. The non-resident tax is calculated by taking the Massachusetts tax on total income (as if the employee were a resident) and multiplying by the ratio of Massachusetts-source income to total income. Non-resident employees who expect to owe less Massachusetts tax than the withholding amount can file Form M-4 with the employer to adjust exemptions, but Massachusetts does not have a reciprocity exemption form because it has no reciprocity agreements. Massachusetts also requires withholding on certain non-wage payments to non-residents, including gambling winnings over $5,000 and certain lottery winnings, per the MA DOR non-resident withholding rules.

No Massachusetts Reciprocity

Massachusetts has no income tax reciprocity agreements with any other state, per the MA DOR. This means residents of neighboring states who commute to Massachusetts for work are subject to Massachusetts income tax on their Massachusetts-source wages, and Massachusetts residents who work in neighboring states are subject to the work state's tax with a credit claimed on the Massachusetts return. New Hampshire has no wage income tax, so New Hampshire residents who work in Massachusetts are subject to Massachusetts income tax on their Massachusetts wages with no New Hampshire offset. Maine, Rhode Island, Connecticut, Vermont, and New York all tax their residents on worldwide income and provide credits for taxes paid to Massachusetts, producing the standard dual-state tax friction.

Because Massachusetts has no reciprocity, cross-border commuters face the burden of filing two state tax returns each year. A Massachusetts resident who commutes to Rhode Island for work, for example, must file a Rhode Island non-resident return reporting Rhode Island wages and a Massachusetts resident return reporting worldwide income, claiming a credit on Schedule OUT for the Rhode Island tax paid. The credit is limited to the Massachusetts tax attributable to the same wages, so the Massachusetts resident does not bear the full Rhode Island rate but does bear any rate differential. For New Hampshire residents who work in Massachusetts, there is no offset because New Hampshire does not tax wages, so the employee bears the full 5.00% Massachusetts rate. SUI is paid to the state where the work is performed, so a Rhode Island resident working in Massachusetts has Massachusetts SUI paid by the Massachusetts employer.

Massachusetts SUI (DUA)

Massachusetts State Unemployment Insurance is administered by the Massachusetts Department of Unemployment Assistance (DUA) under the Massachusetts Employment and Training Law (M.G.L. c. 151A). The new employer SUI rate is approximately 2.4% for most non-construction industries, with a higher rate of 6.36% for new construction employers. The SUI wage base is $15,000 per employee per year for 2025, which is among the higher wage bases in New England and significantly above the federal minimum of $7,000. The maximum new-employer per-employee contribution is approximately $360 (2.4% × $15,000) for non-construction or $954 (6.36% × $15,000) for construction. After the initial period (typically three years), the rate becomes experience-rated based on the employer's benefit charge ratio and reserve account balance, with rates ranging from 0.5% to 12.65% under the standard tax schedule.

Employers register for a DUA unemployment tax account through the Massachusetts UI Online system, which is separate from the MA DOR income tax withholding registration. Quarterly contribution reports are due April 30, July 31, October 31, and January 31, with both wage detail and tax payment submitted on the same form. Late or missing returns generate penalties, and the DUA actively audits employers who fail to register or file. Massachusetts also requires new-hire reporting to the Massachusetts New Hire Reporting Directory within 14 calendar days of hire, which is used for child support enforcement and other state purposes. Massachusetts also assesses a solvency assessment on top of the SUI rate when the unemployment trust fund balance falls below statutory thresholds, which has been applied in recent years and can add 0.5% to 1.0% to the effective SUI rate.

Massachusetts PFML (DFML)

The Massachusetts Paid Family and Medical Leave (PFML) program, administered by the Department of Family and Medical Leave (DFML), is a payroll-funded insurance program that provides paid leave for medical, family, and caregiver reasons. The program began contributions on October 1, 2019, and benefits began on January 1, 2021. For 2025 the combined contribution rate is approximately 1.18% on wages up to the Social Security wage base ($176,100 for 2025), with the rate split between medical leave (approximately 0.88%) and family leave (approximately 0.18%). For employers with 25 or more covered employees, the employer pays 40% of the medical leave contribution and the employee pays 60% of the medical leave contribution plus 100% of the family leave contribution. For employers with fewer than 25 covered employees, the employer pays none of the medical leave contribution but the employee pays 100% of both the medical and family leave contributions.

Employers register for a PFML account through the MassTaxConnect portal, which is integrated with the MA DOR withholding registration but separate from the DUA SUI registration. Quarterly PFML contributions are reported on Form PFML-1, with wage detail and payment submitted together. Employers may choose to self-insure the PFML benefits rather than participate in the state fund, but they must still register with DFML and report quarterly. Out-of-state employers with Massachusetts remote employees must register for PFML if they meet the coverage threshold (one or more Massachusetts employees for the previous four quarters). The DFML actively audits employers who fail to register or remit contributions, and penalties for non-compliance are significant.

Out-of-State Employer With a Massachusetts Remote Employee

An out-of-state employer that hires a Massachusetts remote employee creates Massachusetts payroll tax nexus and must register with the Massachusetts Department of Revenue for an income tax withholding account, with the Massachusetts DUA for an SUI account, and with the Massachusetts DFML for a PFML account. The three registrations are separate and produce separate account numbers. The MA DOR withholding registration is completed online through MassTaxConnect, the DUA SUI registration is completed through UI Online, and the DFML PFML registration is completed through MassTaxConnect with a separate account. All three registrations typically take five to ten business days to process. Foreign-entity registration with the Massachusetts Secretary of the Commonwealth may also be required for corporations and LLCs transacting business in Massachusetts.

Once registered, the out-of-state employer must withhold Massachusetts income tax at the 5.00% flat rate from the remote employee's wages, file quarterly withholding returns through MassTaxConnect, and file annual reconciliation with the MA DOR by January 31. The employer must also pay SUI on the first $15,000 of the Massachusetts employee's wages, file quarterly contribution reports through UI Online, and remit PFML contributions on wages up to the Social Security wage base. The employee must complete Form M-4 for state withholding calculations. The employer must also secure Massachusetts workers' compensation coverage, comply with the Massachusetts Wage Act (which mandates treble damages for violations), and comply with the Massachusetts Earned Sick Time Law and the Massachusetts Parental Leave Act.

Massachusetts Resident Working for an Out-of-State Employer

A Massachusetts resident who works remotely for an out-of-state employer is still subject to Massachusetts income tax on all wages, regardless of where the employer is located. Massachusetts taxes its residents on worldwide income. The out-of-state employer should register with the MA DOR and withhold Massachusetts income tax from the resident employee's wages, although many out-of-state employers fail to do this initially and the resident must make estimated tax payments to cover the Massachusetts liability. If the work state also taxes the resident (because the work state does not have reciprocity with Massachusetts — and no state has reciprocity with Massachusetts — and sources wages to the employer's state), Massachusetts provides a credit for taxes paid to other states on Form 1, Schedule OUT.

The credit is calculated as the lesser of the tax paid to the other state on the out-of-state wages or the Massachusetts tax attributable to those same wages. Because Massachusetts applies a flat 5.00% rate, the credit calculation is straightforward, but the credit cannot exceed the Massachusetts tax on the out-of-state income. For high-tax work states like California (13.3% top rate) or New York (10.9% top rate), the Massachusetts credit is capped at 5.00% of the out-of-state wages, and the Massachusetts resident bears the rate differential. For low-tax work states like New Hampshire (no wage tax) or Pennsylvania (3.07% flat rate), the Massachusetts resident bears the full Massachusetts rate after any small credit. Massachusetts does not enforce a convenience-of-the-employer rule, so a Massachusetts resident who works remotely from Massachusetts for a New York or Connecticut convenience-rule state will be taxed by Massachusetts on the wages and may also be taxed by the work state, with the credit mechanism applying.

Massachusetts-Specific Wage Laws

The Massachusetts Wage Act (M.G.L. c. 149, § 148) governs the timing and method of wage payment for Massachusetts employees and is among the most employee-friendly wage laws in the country. Wages must be paid at least weekly or biweekly for manual workers and at least semimonthly or monthly for other employees, on regular paydays designated in advance. Final paychecks must be delivered on the next regular payday if the employee resigns or was terminated, with stricter rules for certain industries. Violations of the Wage Act can result in mandatory treble damages (three times the unpaid wages) plus attorney's fees, making wage-and-hour litigation particularly costly in Massachusetts. The Wage Act also covers accrued unused vacation, which must be paid out at separation under Massachusetts law.

The Massachusetts minimum wage is $15.00 per hour for 2025 for most employees, per the Massachusetts Attorney General's Fair Labor Division, with the service minimum wage (tipped employees) at $6.75 per hour. The minimum wage was last raised by the Grand Bargain legislation of 2018, which phased in increases from $11.00 to $15.00 between 2019 and 2023, and no further statutory increases are scheduled. The Massachusetts Earned Sick Time Law, effective July 1, 2015, requires employers with 11 or more employees to provide up to 40 hours of paid sick leave per year, accrued at 1 hour per 30 hours worked. Employers with fewer than 11 employees must provide the same amount of unpaid sick leave. The Massachusetts Parental Leave Act provides up to 8 weeks of parental leave for the birth or adoption of a child, and the Massachusetts Pregnant Workers Fairness Act provides accommodations for pregnancy-related conditions.

Recent Massachusetts Tax Developments

The most significant recent Massachusetts tax development is the implementation of the millionaire surtax, approved by voters in November 2022 as Question 1 and effective beginning tax year 2023. The surtax adds 4.00% to income above $1 million, producing a combined top marginal rate of 9.00% on income over the threshold, with the threshold indexed annually for inflation. The MA DOR released extensive guidance on the surtax in 2023 and 2024, including rules for allocating income to the threshold and rules for part-year residents. The surtax affects high-earning employees, particularly those with substantial bonus, commission, or equity compensation income, and has prompted some high-income individuals to consider relocating to lower-tax states.

Massachusetts enacted Chapter 62F relief in 2023 and 2024, triggered by state revenue exceeding an annual cap under a 1986 voter-approved law, which produced refund checks to taxpayers in both years. The 62F mechanism operates automatically when state revenue exceeds the cap, and taxpayers should be aware of the possibility of future refunds. The Massachusetts PFML program has continued to expand, with benefit increases and contribution rate adjustments each year, and the DFML has issued updated guidance for 2025. The Massachusetts minimum wage has stabilized at $15.00 per hour with no scheduled increases, but the attorney general has continued to pursue aggressive enforcement of wage-and-hour violations. Out-of-state employers with Massachusetts remote employees should monitor the annual PFML rate adjustment and update payroll systems to ensure compliance.

Common Massachusetts Payroll Mistakes

The most common Massachusetts payroll mistake is failing to register for all three Massachusetts tax accounts — MA DOR withholding, DUA SUI, and DFML PFML. Many out-of-state employers register for income tax withholding but miss the SUI and PFML registrations, producing back-tax exposure with the corresponding agency. The second common mistake is mishandling PFML contributions, particularly the employer/employee split for employers with 25 or more employees versus fewer than 25 employees, and the Social Security wage base cap on contributions.

The third common mistake is mishandling the Massachusetts Wage Act, which imposes mandatory treble damages for violations including late final paychecks, unpaid accrued vacation, and improper deductions. The fourth common mistake is failing to file quarterly returns for all three programs even in zero-wage quarters, which generates penalties. The fifth common mistake is mishandling supplemental wages — Massachusetts supplemental withholding is 5.00% with no exemption adjustment, and applying the standard formula to bonuses produces incorrect withholding.

The sixth common mistake is failing to comply with the Earned Sick Time Law for employers with 11 or more employees, including proper accrual tracking and carryover. The seventh common mistake is failing to register for PFML when an out-of-state employer has even one Massachusetts employee, which triggers PFML coverage. The eighth common mistake is mishandling the millionaire surtax for high-earning employees, particularly regarding estimated tax payments and additional withholding requests on Form M-4. The ninth common mistake is failing to file the annual reconciliation for any of the three Massachusetts payroll tax accounts by January 31, which generates per-form penalties.

What to Do Next

Audit your Massachusetts payroll compliance using the nine common mistakes above. Verify that your MA DOR withholding account, DUA SUI account, and DFML PFML account are all active and that quarterly returns are filed on time for all three programs, including zero returns for no-wage quarters. Confirm that SUI contributions stop at the $15,000 wage base per employee, that the new employer rate of approximately 2.4% is correctly applied, and that PFML contributions are calculated correctly up to the Social Security wage base with the proper employer/employee split. Verify that Form M-4 is on file for every Massachusetts employee and that the 5.00% withholding rate is correctly applied in your payroll system. Confirm that the Earned Sick Time Law accrual and carryover are properly tracked for employers with 11 or more employees. If you have a Massachusetts resident working for an out-of-state employer, confirm that the credit for taxes paid to other states is being claimed on Form 1, Schedule OUT. Run our multi-state withholding calculator for each Massachusetts employee to verify the full federal, state, and PFML payroll picture.