What is the Massachusetts State Income Tax Rate in 2026?

The Massachusetts state income tax rate for 2026 is primarily a flat 5% on most taxable income, with a surtax of 4% on income above $1,083,150. This simple structure makes planning and withholding predictable for most residents, while high earners should watch the additional surtax threshold carefully.

How Much is the Flat Massachusetts Income Tax Rate in 2026?

The base Massachusetts income tax rate remains 5% for most taxpayers in 2026.

• Applies to wages, salaries, business income, interest, and dividends
• Simple flat rate, unlike progressive states like California or New York
• Easy to calculate for payroll withholding and estimated payments

Table: Massachusetts 2026 Flat Income Tax Overview

What is the Massachusetts “Millionaires Tax” in 2026?

Massachusetts imposes a 4% surtax on taxable income exceeding $1,083,150, sometimes called the “Fair Share Tax” or Millionaires Tax.

• Only the portion above the threshold is taxed at 4%
• Combined with the 5% base, effective tax on this portion is 9%
• Expected to generate billions for state revenue, funding education, infrastructure, and social services

This surtax ensures that high-income earners contribute more without changing the flat rate for the majority of taxpayers.

Are There Special Tax Rates for Capital Gains or Other Income?

Yes. While most income is taxed at 5%, certain income types have different rates:

• Short-term capital gains: 8.5%
• Long-term gains from collectibles: 12% (with partial deductions in some cases)
• Other investment income generally taxed at 5%

These rates make it important for investors and high-net-worth individuals to plan strategically before filing.

How Will 2026 Withholding and Payroll Be Affected?

The Massachusetts Department of Revenue (DOR) has released draft withholding tables for 2026, confirming the continued 5% base rate.

Key points for employers and employees:

• Payroll withholding should be adjusted to the 5% flat rate
• High earners should calculate surtax obligations for quarterly estimated payments
• Filing deadlines remain consistent: April 15, 2027 for most taxpayers

Tip: Using MassTaxConnect or a tax professional ensures accurate withholding and avoids penalties.

How Does Massachusetts Compare to Other States in 2026?

Massachusetts’ flat 5% rate keeps it simple and predictable:

• Lower than highly progressive states like California (up to 13.3%)
• Higher than states with no income tax (Florida, Texas)
• Surtax brings only the wealthiest residents to a higher rate, still below some top state brackets nationally

Table: Massachusetts vs. Other States (Top Rates)

FAQs

What is the tax plan for 2026?

The 2026 tax plan in Massachusetts maintains a 5% flat income tax on most earnings, with a 4% surtax on income above $1,083,150. It keeps payroll withholding straightforward, continues existing deductions and credits, and emphasizes predictability, while high earners will see additional surtax obligations on top of the base rate.

Why are tax rates increasing in 2026?

Massachusetts tax rates increase for high earners due to the 4% surtax on income exceeding $1,083,150. This “Millionaires Tax” aims to raise revenue for state programs like education and infrastructure. The flat 5% base rate remains unchanged, so only the wealthiest residents experience higher combined tax rates in 2026.

Is 80k a good salary in Massachusetts?

An $80,000 salary in Massachusetts is above the state median income, providing comfortable living in many areas. After state and federal taxes, it supports housing, transportation, and basic expenses. However, costs in Boston or other urban regions may be higher, so lifestyle expectations should factor into financial planning.

What is a 150k salary after taxes in Massachusetts?

A $150,000 salary in Massachusetts typically results in $105,000–$110,000 take-home pay, depending on filing status, deductions, and contributions. The base 5% state tax applies, alongside federal taxes and payroll deductions. High earners approaching the surtax threshold may pay slightly more on income above $1,083,150.

Need Help With Massachusetts Taxes in 2026?

Filing your Massachusetts state income tax can be straightforward, but high-income earners and investors may face complexities. Dimov Tax offers expert guidance for individuals and businesses to maximize savings, stay compliant, and plan for surtax impacts.

Contact Dimov Tax today to schedule a consultation and ensure your 2026 tax return is accurate and optimized.