Calvert International AG provides legal, taxation, and business advisory services company in Germany, South Africa, Mauritius, and internationally. The company offers legal advisory and guidance services for private and legal persons; and tax law and financial-related consulting services, as well as advice clients relating to income tax returns and a range of financial matters, including trust, estate, and retirement taxes. It also provides business advisory services in general trade and distribution law; for trade in goods and services; and at various stages of the value chain comprising manufacturing, production, procurement, purchase, distribution, and sale of products through national and international B2B and B2C businesses. In addition, the company offers renewable energy solutions; promotion; and carbon removal solutions. The company was formerly known as Centurion International AG. Calvert International AG was incorporated in 2019 and is headquartered in Frankfurt am Main, Germany.