GRI meaning in shipping: GRI is an acronym for the term General Rate Increase. Sometimes, it might be referred to as an annual percentage increase. It represents an adjustment in shipping rates, typically implemented by carriers on a yearly basis. Note, GRI is different from things like fuel surcharges, and peak season operating costs. GRI accounts for changes in the supply chain, raw materials, and other factors that can vary significantly, impacting overall shipping costs, and causing carriers to raise prices.