What you need to know
These forms are subject to change only by federal or state legislative action.
All printable Massachusetts corporate excise tax forms are in PDF format. To read them, you'll need the free Adobe Acrobat Reader.
If you have any suggestions or comments on how to improve these forms, contact the Forms Manager at firstname.lastname@example.org.
2023 Credit Schedules
2022 Corporate Excise forms & instructions
DOR Approved Software Developers
Software developers approved by DOR for participation in the Massachusetts Electronic Filing Program.
File and Pay online with MassTaxConnect
MassTaxConnect is DOR's web-based application for filing and paying taxes. It's fast, safe and secure.
Estimated tax payment vouchers
All corporations and financial institutions that reasonably estimate their excise to be in excess of $1,000 for the taxable year are required to make estimated payments.
Form 355-ES, 2023 Corporate Estimated Tax Payment Instructions and Worksheet
Form UBI-ES, 2023 Non-Profit Entities Corporation Estimated Tax Payment Vouchers and Instructions
Visit Corporate Excise tax estimated payments for due date and scheduling information.
Contact for Massachusetts Corporate Excise Tax Forms and Instructions
9 a.m.–4 p.m., Monday through Friday