Ljublana - Slovenian banks' losses in the first half of the year jumped to €215m ($283m) from €24m in the same period in 2012, the eurozone country's central bank said Monday.
"Write downs in the same period reached €467m which represents a 10% increase compared to the same period 2012," the central bank said.
Slovenia, which is seeking to clean up its troubled banks and avoid a bailout by its eurozone counterparts, hired foreign consultants to conduct in depth reviews of its lenders by the end of the year.
There have been concerns that a mountain of bad debts at its banks - led by the country's three largest state-owned banks - could push Slovenia into seeking a bailout.
Slovenia has set up a so-called bad bank, which will relieve the country's state-owned banks of up to €7.0bn in risky assets and non-performing loans.
Fearing the true amount of distressed assets could be higher, the European Commission asked Slovenia to contract out an independent audit of the banking system before beggining to transfer of non-performing loans to the bad bank.