The Gallagher Government has moved to scrap the $10,000 cap on donations to political parties and to quadruple the amount of public money paid to candidates after each election, from $2 a vote to $8 a vote.

The increase in public funding will see about $2 million handed to political parties and candidates at the next election. Public funding was $1 a vote for most of the ACT's political history. At the last election, it was increased to $2, amounting to $409,000 distributed to candidates.

The Greens' Shane Rattenbury is a lone voice against the changes, describing the planned $8 payment as "wildly" out of step with elsewhere.

In Victoria, candidates are paid $1.65 a vote. For Commonwealth elections, the amount is $2.56.

In a surprise move, the Bill tabled in the ACT Assembly on Thursday abolishes the limit on donations for election spending. At the moment, donations are capped at $10,000 a year from each donor.