Victorians who break the law could be asked to pay an additional fine to support victims of crime under a proposal being considered by the State Government.

Victims of Crime Commissioner Greg Davies put forward the idea in a submission to a law reform review into the Victims of Crime Assistance Act.

He argued small fees added to speeding fines or more serious court fines could be used to build a multi-million-dollar fund to support those affected by wider crime.

Mr Davies said too often victims were left out of pocket.

"It shouldn't always be down to the taxpayer to provide support," he said.

"So this proposal basically says if you break the law there's a very small percentage of whatever the fine or penalty might be added to what you receive in a penalty notice and that goes directly to the victims."

Mr Davies believed the scheme could raise nearly $100 million a year.

"People who get booked for various driving offences might have a bit of an issue in the first instance and say 'Well what's this got to do with victims of crime?'

"Many of the people who are killed, maimed and otherwise injured on our roads are injured or killed as a result of criminal conduct."

Attorney-General Martin Pakula confirmed the Government was considering the proposal.

"I've spoken to Greg Davies about his idea … the Government is very interested in raising some additional support for victims through offenders," he said.

"We're working on that as we speak, and we're also very keen to see the Law Reform Commission recommendations."

Mr Pakula said there was no timeline on when changes could be made, as the details were still being worked out.

"That's obviously a balancing act that's very important."

Opposition wants 'more focused' fines for crimes

Opposition spokesman John Pesutto said the Coalition's version of the plan would only tax those convicted of serious crimes.

"Ours are very targeted, we don't propose to extend it to infringements," he said

"Our fines are focused on those who are found guilty in the Magistrates, County or Supreme Court of violent or serious offences."

But Mr Pakula said the Opposition's push for a higher levy may actually make it harder to enforce.

"If you're going to have a levy to support victims, it needs to be simple, and it needs to be one where you can raise the funds without having to spend more money chasing the funds than you do raising the money," he said.