Only forms that show tax paid are of interest. DOR Personal Income tax forms and instructions | Mass.gov states:
"attach to your [ paper-filed ] Massachusetts Form 1, with a single staple, all state copies of your Forms W-2, W-2G, PWH-WA, 2G and any Forms 1099 which included Massachusetts withholding. If making a payment, be sure to enclose Form PV with your Form 1."
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