Massachusetts has specific regulations and requirements regarding the taxation of wages for both resident and nonresident remote employees, which fall under distinct categories:
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Employer Withholding Obligations: Employers are required to withhold state income taxes from wages paid to both resident and nonresident employees. For Massachusetts, this includes all taxable income derived from sources within the Commonwealth, where the amount of tax withheld is determined based on the employee's taxable income.
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Sourcing of Nonresident Wages: Nonresidents are subject to Massachusetts taxation on income generated from sources within the state, including wages earned from employment. The rules stipulate that nonresident employees’ gross income should include earnings from any employment carried on in Massachusetts, regardless of whether they physically perform work in the state. This is specified under Section 5A of the state's tax code, which governs taxation for nonresidents.
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Reciprocity Agreements: Massachusetts does not have reciprocity agreements with other states, meaning that nonresidents working in Massachusetts will owe taxes on their Massachusetts-sourced income even if they reside in another state.
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De-minimis Thresholds: Massachusetts does not specify a de-minimis threshold for withholdings concerning remote employment. Nonresidents earning income within the Commonwealth must report their earnings, regardless of the amount earned.
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Local/City Wage Taxes: Massachusetts municipalities do not impose local or city wage taxes. Employers are only responsible for state income tax withholding, while other local taxes do not apply to employee wages in the Commonwealth.
In summary, Massachusetts enforces withholding obligations, sources wages for nonresidents based on activity in the state, has no reciprocity agreements that benefit nonresidents, lacks de-minimis thresholds, and does not levy local wage taxes.