Maine Attachment A (B410A) (12/15) is a form used for sending income tax returns to the Maine Revenue Services. The form is used to report income received from wages, as well as other sources such as interest, dividends, and capital gains. It also includes information about withholding, estimated taxes, and adjustments to income. There are three types of Maine Attachment A (B410A) (12/15): 1) Form B410A for Individual Income Tax Return, 2) Form B410A-NR/BY for Nonresident/Part-Year Resident Income Tax Return, and 3) Form B410A-F for Fiduciary Income Tax Return.