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POAs and Third party authorizations

2017 Personal Income Tax Changes

E-Filing Options Using Commercial Software

E-Filing and Payment Requirements

When to file an amended return

Who’s a Massachusetts resident, non-resident or part-year resident?

What you can and can't do on MassTaxConnect

Additional Information

Administrative Procedures – Learn how things work at DOR

DOR Legal Library – Regulations, TIRs, Directives and more

Information for New Businesses

Tax Bills, Collections, Audits, Appeals

Offers in Final Settlement

Voluntary Disclosure Program

DOR Phone numbers and locations

DOR News