The Gillard government could slug workers around an average of $300 a year by raising the Medicare levy in next month's budget from 1.5 per cent to two per cent.
News Ltd papers say the increase would help fund the cost of the National Disability Insurance Scheme.
The government is looking for extra money after revealing it is facing a $12 billion loss of revenue.
A 0.5 per cent increase in the levy would raise an extra $3.2 billion a year for the May 14 Budget.
It would mean someone earning $50,000 would pay about $250 a year while someone on $75,000 could expect to pay $375.