In this article, sustainability of the current account deficit (CAD) for BRICS countries is analyzed in a nonlinear framework. In this respect, Harvey, Leybourne, and Xiao (2008) linearity test and the unit root tests of Sollis (2009) and Kruse (2011) are used. The analysis is based on the quarterly current account (CA) balances as percentages of gross domestic product. Results indicate that the CADs are unsustainable for Brazil and India. However, the sustainability hypothesis is valid for South Africa when considering size nonlinearity.