You have a corporation that is legally doing business in Massachusetts. This means that your corporation is either formed in MA ("domestic corporation") or formed somewhere else. If you are formed somewhere else and doing business in MA than you should be registered as a "foreign corporation" with the secretary of state to legally operate.
There are at least two forms that all corps need to file with two MA agencies:
Secretary of State Annual Report
Domestic or foreign, The Massachusetts Secretary of State requires you to file an annual report 2.5 months after the close of the corporation's fiscal year. For most Corporations, that is the calendar year which means that this
Annual report is due February 15th each year. Filing Fee is $125 and the late filing fee is $25.
Department of Revenue Corporate Excise Tax Return
Your corporation is also required to file a tax return for 355 or 355S (for S-Corp).
The Massachusetts corporation tax return due date is March 15th for calendar year taxpayers or 3.5 Months after your corporation's fiscal year end. Along with it you will pay a minimum Corporate Excise Tax of $456.
There may be other filing requirements for you Corporation, like Payroll Tax returns, so this list is intended to be the bare minimum to get you started and can not be used for the purposes of avoiding any failure to file penalties or interest.
Any advice in this communication is limited to the conclusions specifically set forth herein and is based on the completeness and accuracy of the stated facts at the stated time, assumptions and/or representations included. In rendering our advice, we may consider tax authorities that are subject to change, retroactively and/or prospectively, and any such changes could affect the validity of our advice. We will not update this advice for subsequent changes or modifications to the law and regulations, or to the judicial and administrative interpretations thereof.