Ms Roxon was forced to stub out the speculation after the government's indigenous smoking coordinator, Tom Calma, said another tax hike had been "mooted".
Labor increased the excise by 25 per cent in April 2010, adding $2.16 to the price of a pack of 30 smokes.
The government's preventative health taskforce had recommended a 68 per cent increase in the excise.
But in responding to the taskforce's findings in May the government argued that while hiking prices could cause some smokers to quit "it can also induce financial stress among people who continue to smoke".
