Massachusetts Remote Work Tax Rules for Non-Residents

Massachusetts remote work tax rules for non-residents come down to one question: where were you sitting when you did the work? If you work full-time from a home office in another state for a Massachusetts-based employer, you generally owe the Commonwealth nothing on your wages. If you split time between home and a Massachusetts workplace, you owe tax on the portion of your pay tied to days you physically worked in the state.

The Physical Presence Rule

Massachusetts sources wage income to wherever the employee physically performs the work, not where the employer is headquartered. Under 830 CMR 62.5A.1, only the portion of your pay connected to services actually performed inside the Commonwealth counts as Massachusetts-source income.¹

A non-resident who performs every task from a home office in Connecticut, New Hampshire, or anywhere else owes no Massachusetts income tax on wages, even if the company’s headquarters sit in downtown Boston. The work happens outside the state, so the income stays outside the state’s reach.

The rule cuts the other way when your job requires you to show up in Massachusetts for meetings, training, client visits, or use of specialized equipment. Every day you physically work in the Commonwealth creates taxable income, even if it’s just one day a quarter. There is no minimum-day safe harbor. A single workday in Massachusetts can trigger a filing obligation.

No Convenience of the Employer Rule

Some states, most notably New York, tax non-residents on work performed from home if the remote arrangement exists for the employee’s convenience rather than the employer’s necessity. Massachusetts does not currently enforce that kind of rule. The Commonwealth briefly applied a similar approach during the COVID-19 pandemic, but that regulation expired in September 2021 and has not been replaced.

The distinction matters. Under a convenience rule, a non-resident working from home in another state could still owe Massachusetts tax if the employer had an available office in the Commonwealth. Under the physical presence standard, only the days you actually show up in Massachusetts count. If your employer lets you work remotely as a perk, Massachusetts will not tax you for that choice.

How to Apportion Your Pay Between States

When you split time between Massachusetts and your home state, you owe Massachusetts tax on a fraction of your salary. The formula is simple: Massachusetts workdays divided by total workdays everywhere, multiplied by your compensation.¹

What Counts as a Workday

The denominator (total working days) only includes days you were actually required to work. Holidays, sick days, vacation days, and any paid or unpaid leave do not count in the total. If you work 250 days a year but had 10 holidays and 15 vacation days, your denominator is 250, not 275.¹

There is a split-day rule that trips people up. If you work partly in Massachusetts and partly elsewhere on the same day, the entire day counts as a Massachusetts day unless you can prove you spent more than half the working day outside the state. An afternoon meeting in Boston followed by a morning at your New Hampshire home office counts as a full Massachusetts day unless your records show the out-of-state hours exceeded the in-state hours.

A Worked Example

Say you earn $200,000 a year and work 240 total days, with 30 of those in your employer’s Massachusetts office. Your Massachusetts-source income is $200,000 × (30 ÷ 240) = $25,000. That $25,000 is subject to the Massachusetts flat income tax rate of 5.0%.² Your Massachusetts tax on wages would be $1,250.

Keep a Location Log

Track where you work each day as you go. The burden of proof falls on you if the Department of Revenue questions your apportionment, and reconstructing a year’s worth of locations from memory does not go well. Calendar entries, building access logs, and VPN connection records all serve as evidence.

The 4% Surtax on High Incomes

Massachusetts adds a 4% surtax on taxable income above a threshold that adjusts annually for inflation. For tax year 2026, the surtax kicks in at $1,107,750.³ Combined with the 5% base rate, income above the line is effectively taxed at 9%.²

For most non-resident remote workers, the surtax will not apply, because it is measured against your Massachusetts taxable income after apportionment, not your total compensation. But if you are a high-earning executive with significant days in the state, or you trigger a large equity compensation event sourced to Massachusetts, the surtax is worth watching.

Stock Options, RSUs, and Deferred Pay

Equity compensation follows sourcing rules tied to where you performed the underlying work, not where you live when the money arrives. You might have left Massachusetts years ago and still owe the state tax when old stock options vest.

For non-qualified stock options, Massachusetts taxes the spread between the exercise price and the market price at exercise. The taxable portion is determined by your average Massachusetts workday percentage during the period between the grant date and the exercise date.¹ If you were granted options while working 60% of your time in Massachusetts and later exercised them after moving away entirely, roughly 60% of the gain is Massachusetts-source income. Incentive stock options under IRC § 422 and employee stock purchase plan options under IRC § 423 are generally not taxable by Massachusetts unless you make a disqualifying disposition.

Restricted stock units follow the same principle. The income recognized in the vesting year is Massachusetts-source to the extent it is tied to work performed in the state.¹ For RSUs that vest over multiple years, calculate your Massachusetts workday percentage for each vesting tranche separately.

Deferred compensation, severance pay, and accumulated sick leave payouts follow the same rule. If the underlying employment was connected to Massachusetts, the income is sourced there, even if it lands in your bank account long after you have relocated.¹

When You Have to File

Non-residents with Massachusetts-source income file Form 1-NR/PY, the Nonresident or Part-Year Resident Income Tax Return. Filing is required if your Massachusetts-source gross income exceeds the lesser of two thresholds: $8,000, or your personal exemption multiplied by the ratio of your Massachusetts income to your total income.⁴

The personal exemption amounts are $4,400 for single filers, $6,800 for head of household, and $8,800 for married filing jointly.⁵ For non-residents, the exemption is reduced by the ratio of Massachusetts income to total income. If only 10% of your income comes from Massachusetts and you are single, your apportioned exemption drops to $440, and you would need to file once your Massachusetts-source income exceeds that.

In practice, almost any non-resident earning wages in Massachusetts will need to file. Even a handful of in-office days generating a few thousand dollars will clear the apportioned exemption threshold.

Getting Credit at Home

You cannot claim a credit on your Massachusetts non-resident return for taxes paid to your home state. That credit exists only for Massachusetts residents and part-year residents.⁶ Relief comes on the other end: your home state’s resident return should offer a credit for income taxes you paid to Massachusetts on the same income.

File your Massachusetts non-resident return first. You will need the Massachusetts tax liability figure to calculate the credit on your home state return. Most states allow this credit, though the mechanics vary. Massachusetts has no reciprocal tax agreements with neighboring states, so there is no shortcut that exempts you from filing.

Watch one scenario. Your home state usually caps the credit at its own tax rate on that income. If Massachusetts’s rate on your income (5%, or 9% with the surtax) is higher than your home state’s rate, you will not get full dollar-for-dollar relief. You effectively pay the higher of the two rates on the Massachusetts-sourced portion.

What Your Employer Withholds

Massachusetts law requires every employer making wage payments subject to state tax to deduct and withhold income tax from those wages.⁷ This applies to employers that maintain an office or conduct business within the Commonwealth, even if the employer is headquartered elsewhere.⁸

Employers should apply the same physical presence sourcing rules to decide which portion of a non-resident’s wages is subject to Massachusetts withholding. If you spend 30 out of 240 workdays in Massachusetts, your employer should withhold Massachusetts tax on 12.5% of your compensation. The withholding rate is 5.0% for 2026.⁹

Many employers get this wrong. Some over-withhold by treating your full salary as Massachusetts income. Others under-withhold by ignoring your Massachusetts days entirely. Either way, the filing obligation is yours, and you will owe a balance or be due a refund based on the correct apportionment, not what appeared on your paycheck.

Estimated Tax Payments

If your employer is not withholding Massachusetts tax, or is not withholding enough, you may need to make quarterly estimated payments to avoid underpayment penalties. This is common when employers outside Massachusetts have not registered with the Department of Revenue or do not track in-state days for withholding. Massachusetts uses Form 1-ES for individual estimated payments, with quarterly due dates that generally follow the federal schedule: April 15, June 15, September 15, and January 15 of the following year.

1
Mass.gov. 830 CMR 62.5A.1 Non-Resident Income Tax
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Mass.gov. Massachusetts Tax Rates
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Massachusetts Department of Revenue. 2026 Form 2-ES Estimated Tax Payment Vouchers Instructions and Worksheets
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Mass.gov. Personal Income Tax for Nonresidents
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Mass.gov. Massachusetts Personal Income Tax Exemptions
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Mass.gov. Learn About the Income Tax Paid to Another Jurisdiction Credit
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General Court of Massachusetts. Massachusetts General Laws Chapter 62B Section 2
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Legal Information Institute. Massachusetts Regulation 830 CMR 62B.2.1 – Withholding of Taxes on Wages
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Massachusetts Department of Revenue. Massachusetts Circular M Income Tax Withholding Tables Effective January 1, 2026