Massachusetts: why is my paycheck lower than expected?

Top reasons a Massachusetts worker's paycheck shrinks — and how to figure out which one is yours.

Educational only — not advice. PayslipIQ USA provides educational guidance only. It is not legal, tax, accounting, payroll, employment, credit, financial, or consumer reporting advice. Results are estimates based on the information you enter or upload and may be incomplete, outdated, or inaccurate. PayslipIQ USA does not verify income, certify payroll accuracy, determine legal violations, or confirm that money is owed. PayslipIQ is independent and not affiliated with the IRS, SSA, U.S. Department of Labor, any state tax agency, employer, or payroll provider. Always confirm with your employer, payroll department, the IRS, your state labor or revenue agency, a CPA, attorney, or another qualified professional before acting.Figures reflect tax year 2025. Last verified 2025-04-01. Rules and limits may change.

Top reasons a Massachusetts paycheck looks smaller

New W-4 (federal or state).
Year-to-date wages crossed a bracket (less common in flat-rate states like Massachusetts).
Bonus withheld at supplemental rate.
Benefits enrollment change.
401(k) percent change.
New garnishment or child-support order.

Massachusetts official sources

Massachusetts Department of Revenue

Massachusetts Executive Office of Labor and Workforce Development