QAS-Certified – QAS-certification is only awarded to carbon offsets that are independently audited to the highest standards every year. To be certified, carbon offsets must use accurate calculators, use high quality projects and reconcile all offsets within 15 months. To help buyers, important information must be provided at or before the point of sale such as price and project certification.

Not QAS-Certified – airline carbon offset products that have not been audited by the QAS. However you can use this comparison table to find out how they compare.