The Financial Services Authority (OJK) will impose additional capital for systemically important banks (SIBs) based on their size, inter-connected with the financial system, and the complexity of their business to protect against any failures. The said banks are urged to create a tier-1 capital surcharge of between 1% and 3.5% of risk-weighted assets, depending on the size and perceived riskiness of the lender, the regulator said in a statement on its website Tuesday.