Profits for the year were impacted by a £29 million fine by the U.K.'s Financial Conduct Authority over failings related to Starling's financial crime prevention systems.
Starling also flagged an issue with the Bounce Back Loan Scheme (BBLS) that was designed to provide firms with access to cash during the coronavirus pandemic.
Starling was one of several banks that were approved to lend cash to firms during the Covid-19 outbreak in 2020. The scheme provided a 100% guarantee to lenders, making the government responsible for covering the full outstanding loan amount if a borrower defaulted.