Grenada has a double tax avoidance agreement with the UK dating from 1949, with an amending protocol dated 1968.

By virtue of the UK's double tax avoidance agreement with South Africa, Grenada has some double tax avoidance arrangements with that country.

The Caricom Double Taxation Agreement applies within Caricom, i.e. Barbados, Guyana, Jamaica and Trinidad and Tobago and the less developed Caricom countries, being Antigua, Belize, Dominica, Grenada, Montserrat, St. Lucia, St. Vincent and St. Kitts, Nevis and Anguilla. The treaty largely removes fiscal barriers within Caricom and provides for income arising in one Caricom territory for a resident of another to be taxed only in the source country. The Treaty also exempts dividends payable by a company resident in one Caricom territory from taxation both in the country in which the income arises but also in the country in which the shareholder is resident.

Grenada also has a Tax Information Exchange Agreement with the United States within Caricom's programme for such treaties under the Caribbean Basin Initiative. As a result, Grenada is considered to be part of the North American area for purposes of claiming deductions for expenses incurred in connection with a convention beginning on or after the 1987.