Massachusetts Tax Deadlines

When are taxes due in Massachusetts?

Massachusetts state income tax returns for 2025 are generally due on April 15, 2026, aligning with the federal deadline. However, some entity types such as partnerships and S-corporations have earlier deadlines (March 16, 2026). Check the deadlines above for your specific entity type.

Does Massachusetts require estimated tax payments?

Yes, Massachusetts generally requires estimated tax payments if you expect to owe more than a certain threshold in state income tax. Payments typically follow a quarterly schedule. Visit the estimated payments page for Massachusetts for specific due dates.

What is the Massachusetts tax extension deadline?

Massachusetts generally grants a 6-month extension for filing state income tax returns, moving the deadline to October 15, 2026 for most individual filers. Note that an extension to file is not an extension to pay — any tax owed is still due by the original deadline.

What are the Massachusetts tax rates for 2026?

Massachusetts tax rates vary by income level and filing status. For the most current rates and brackets, visit Massachusetts Department of Revenue at https://www.mass.gov/orgs/massachusetts-department-of-revenue. Tax rates can change annually based on state legislation.

Does Massachusetts conform to federal due dates?

Many Massachusetts deadlines follow the federal calendar. Always confirm on Massachusetts Department of Revenue.

Where can I file Massachusetts tax forms?

Visit Massachusetts Department of Revenue at https://www.mass.gov/orgs/massachusetts-department-of-revenue for official forms and e-file options.