Tower has raised its premiums for house and contents insurance by between 25 per cent and 30 per cent to reflect an increase in charges from reinsurers after locking in $525 million of cover for the 2012/2013 year.
The insurer raised its cover from $500 million per event, taking advantage of spare capacity in the reinsurance market to lock in more cover at a reasonable rate, said managing director Rob Flannagan.
"There are lots of events out there but there's also a bit of capacity in the market at a reasonable price," he said. "We want to keep increasing our overall cover so we're not vulnerable."
That's even though $500 million of cover is "way above what our modelling says we would require".
Tower's excess has risen to $11.7 million from $6.7 million a year earlier, the company said in a statement. The$525 million programme again involves reinsurance cover for two catastrophe events, it said.