Currency: The local currency is the Trinidad and Tobago dollar. US dollars are widely accepted at an approximate rate of TT $6 to US $1 and you can find rate information at local banks, or the daily newspapers.urrency: The local currency is the Trinidad and Tobago dollar. US dollars are widely accepted at an approximate rate of TT $6 to US $1 and you can find rate information at local banks, or the daily newspapers.