BERN(Reuters) -The Swiss National Bank still has the tools to steer inflation towards its price stability goal even with interest rates at zero, extended governing board member Atillio Zanetti said on Tuesday.

"It's not an obvious step to go into negative rates, but I wouldn't say that we don't want to do that if that's necessary," Zanetti told reporters.

"So negative rates are an option but we are aware that the transmission of monetary policy with negative rates is different than in positive territory," he added.

(Reporting by John Revill)