Massachusetts Form 10A (RTF) is a tax form for filing a Massachusetts Personal Income Tax Return for Part-Year Residents and Nonresidents. It is to be used by individuals who were a nonresident or part-year resident of Massachusetts during tax year 2020. This form is used to report income from all sources, including wages, salaries, tips, interest, dividends, and other income. It can also be used to claim deductions, credits, and other tax benefits. There are three types of Massachusetts Form 10A (RTF): Form 10A — Resident, Form 10— - Part-Year Resident, and Form 10A — Nonresident.