The ACWB notice refers to the Advanced Canada workers benefit (ACWB), which is a refundable tax credit to help individuals and families who are working and earning a low income. If you are entitled to receive the Canada Workers Benefit (CWB), you will get up to 50% of your CWB in advanced payments under the ACWB. The ACWB payments are sent automatically, and you dont need to apply to receive them. Starting in July 2023, ACWB recipients will receive half of their 2022 CWB allotment in quarterly instalments in July, October, and January. The remaining amount will be reconciled once they file their 2023 tax return next spring.