PM vows to keep word on pensioners

Prime Minister Tony Abbott has hosed down speculation his government is planning to make changes to the age pension.

He vowed to "do the right thing" by all Australians, when quizzed by reporters in Canberra on Tuesday.

"That certainly means looking after the vulnerable," he said.

Treasurer Joe Hockey has hinted the eligibility age for the pension might be lifted from 67 to 70, while there are suggestions the government is looking at making changes to indexation arrangements.

Mr Abbott said he would keep to the commitments he made during last year's election campaign.

One of those commitments was "no changes" to pensions.