The General Preferential Tariff (GPT) entered into force in 1974. Under this tariff, Canada offered non-reciprocal tariff rates that were less than Most-Favoured-Nation tariff rates for imports from developing countries. This was done on the recommendation of the United Nations to help promote economic growth in those countries.
In 2012, the Government of Canada revisited this commitment and decided to remove 72 countries from having this benefit on January 1, 2015. The affected countries are now considered trade-competitive countries.