China's banking regulator said Tuesday that its lowest capital adequacy ratio (CAR) imposed on the country's five state-owned commercial banks has been 11.5 percent.

China has implemented differentiated capital control targets for the five banks under the regulatory system of CARPALs since the beginning of the year, said the China Banking Regulatory Commission (CBRC), adding that all the banks' CARs are set above 11.5 percent.

The CARPALs, a regulatory target system created by the CBRC in early 2010, consists of seven indicators concerning capital adequacy, asset quality, risk concentration, provisioning coverage, affiliated institutions, liquidity and swindle prevention control.

A previous report by Bloomberg News said China raised the CAR last month because of concerns over credit risks.

China's five state-owned commercial banks include the Industrial and Commercial Bank of China, the Agricultural Bank of China, the Bank of China, China Construction Bank, and the Bank of Communications.