Re: Form aa-1 is for? are there instructions? - Intuit Accountants Community

Is this for MA corporate returns?

https://www.mass.gov/doc/form-aa-1-application-for-section-42-method-of-apportionment/download

https://www.mass.gov/administrative-procedure/ap-304-applications-for-section-42-method-of-apportion...

https://malegislature.gov/laws/generallaws/parti/titleix/chapter63/section42

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