Social worker here, I work with folks on Mainecare, and many of my clients are non-filers. Unfortunately, there is no way for a non-filer at this point to become eligible for the $450 heating checks.

Maine’s Revenue Services has the following requirement listed on the payment status checking page: “You filed a 2021 Maine income tax return no later than October 31, 2022 as a full-year resident”. This was the same requirement for the $850 pandemic relief funds from 2022, so if they received the $850, they will also get the $450 automatically.

Short of calling Maine Revenue Services and maybe being able to be granted an exemption due to extenuating circumstances, filing at this point will not make someone eligible.