The 13th edition of the regional showpiece is slated to be held from Dec. 5, 2021, to Jan. 1, 2022, after getting postponed twice from its original schedule in 2020 because of the COVID-19 pandemic.
A total of ten nations from Southeast Asia will feature across two groups that will be played out in a round-robin format.
Five-time champions Thailand are in Group A alongside Myanmar, Philippines and hosts Singapore. They will also be joined by either Timor-Leste or Brunei Darussalam who will play each other in the qualifier.
The top two teams from each group will progress to the semifinals. The final, expected to be a two-legged affair, is scheduled to be held on Dec. 29 and Jan. 1.
This will be the first time Singapore will be hosting the AFF Championship since 2014 when the city-state co-hosted the event with Vietnam.