Founded in 1990, Guaranty Trust has been on a mission to make financial services accessible to all Africans in ways that truly serve people’s needs and help businesses thrive. Headquartered in Lagos, Guaranty Trust has banking subsidiaries in Nigeria, Cote D'Ivoire, Gambia, Ghana, Liberia, Kenya, Rwanda, Tanzania, Uganda, Sierra Leone and the United Kingdom.

Since commencing operations in February 1991, Guaranty Trust has maintained an unbroken streak of year-on-year growth and a consistent lead in driving the digitization of financial services in Nigeria thanks to its strong service culture, efficient management, world-class corporate governance standards and bias for innovation.

In April 2021, Guaranty Trust Bank Plc. transitioned to a financial holding company, Guaranty Trust Group Holding Company Plc. (GTCo Plc.), as part of the company's strategy to position for future growth and deliver benefits beyond banking to the people, communities and businesses who depend on the value we create to thrive.

Guaranty Trust Bank (Ghana) Limited was registered in Ghana in October 2004 and obtained its universal banking license from the Bank of Ghana on 23rd February, 2006, thereby paving the way for the commencement of operations.

The Bank is a subsidiary of Guaranty Trust Holding Co Plc, one of the foremost financial institutions in Nigeria. Guaranty Trust Bank Ltd, a subsidiary of Guaranty Trust Holding Co Plc is the first indigenously owned sub-Saharan bank to be quoted on the London Stock Exchange. In 2008, GTBank Ltd became the first new generation indigenous African bank to obtain a banking license to carry out fully fledged commercial banking activities in the United Kingdom.

In the last 15 years, Guaranty Trust Bank has built a strong, profitable and respectable brand in Ghana, becoming a reference point for good business practice and a role model in the financial services industry.

GTBank operates from 32 branches spread across Ghana.