The Queensland government is facing calls to amend its plans to further limit political donations by civil society groups who say they'd be silenced.

Legal bodies, conservationists and a church argue the proposed law will push them from political debate unless they're amended.

Queensland Premier Annastacia Palaszczuk intends to put a curb to political donations. Credit:Dan Peled/AAP

However, the state government says its proposed legislation will even the playing field ahead of elections by curbing political donations and election spending.

The groups were due to front a parliamentary committee on Monday, after lawyers on Friday suggested the bill could face a High Court challenge.