Queensland's Crime and Misconduct Commission (CMC) says it will have to axe up to 30 full-time positions due to State Government budget cuts.

The State Government has cut funding to the CMC by 1 per cent.

CMC head Ross Martin appeared before today's budget estimates hearing at Parliament House.

He says the reduction will have a significant impact on the Commission's ability to perform its duties.

Mr Martin says he will be addressing staff tomorrow.