Maine starts sending out $300 affordability payments this month, so how do you know if one is coming your way? Maine Residents Will Begin Receiving $300 Affordability Checks in July 2026As part of the state's supplemental budget, passed in April 2026, it was determined that eligible Maine residents would receive a one-time $300 affordability payment. Eligible Maine Residents to Receive $300 Affordability Checks by MailSo, how do you know if you're eligible for the $300 payment? According to Maine Revenue Service, there are three requirements for eligibility:File a 2025 Maine individual income tax return by October 15, 2026, as a full-year Maine resident. Not to be eligible to be claimed as a dependent on another taxpayer's 2025 individual income tax return.