By offloading some of the risk on their loans, the banks can significantly reduce how much capital they need to set aside to cover potential losses, according to law firm Clifford Chance.
A bank can normally transfer risks of losses equivalent to around 7% to 12% of a loan portfolio, two market sources said.
With synthetic structures, a bank transfers the risk via credit derivatives or guarantees but keeps holding the underlying exposures.
The IFC sold BNP a $50 million guarantee on $1 billion of loans to emerging markets, they said, without disclosing terms.
While Europe has been at the forefront for risk transfers, the stock of loans covered by SRTs is small relative to European banks' balance sheets.