Provided are approaches for customizing transaction cards using a multi-part card body. In some approaches, the transaction card may include a first section comprising a first outer perimeter, a first interior edge, and a second interior edge extending from the first interior edge, wherein the first and second interior edges form an obtuse angle, and wherein a slot is formed in the first interior edge. The transaction card may further include a second section couplable with the first section, wherein the second section comprises a second outer perimeter, a third interior edge, and a fourth interior edge extending from the third interior edge, wherein a protrusion extends from the third interior edge, and wherein the protrusion is retained within the slot when the first section and the second section are joined together. The transaction card may further include a chip coupled to the first section.