Indicative rates, not an offer.
The Guyanese dollar (GYD) is the national currency; US dollars are the main foreign currency, and Brazilian reais and Surinamese dollars are traded near the borders. Georgetown has the most offers, followed by Linden and New Amsterdam.
Licensed cambios in central Georgetown usually offer better rates than banks. In Guyana, P2P offers let you exchange US dollars for Guyanese dollars directly with another person, in cash or by transfer.