From January 1, 2022, banknotes in the denomination of $1, $5, $10, $20 and $50 bearing series dates prior to 2020 shall cease to be legal tender for cash payment within Trinidad and Tobago.   

See link to Notice under Section 27(1) of the Central Bank Act, Chap. 79:02

See link to information on the Completion of Transition to Polymer Banknotes