Major parties could be forced to repay even more money sourced through a now-closed political donations loophole under revamped laws.
Bleary-eyed Victorian MPs sat until about 5.30am on Friday to pass legislation restoring political donation laws ahead of the November state election.
The state has not had any caps, foreign donations ban or disclosure requirements since mid-April, when the High Court found donation exemptions created for nominated entities were unconstitutional.
Under the new laws that restored those safeguards, nominated entities of the Labor, Liberal and National parties will be subject to the revised four-year donation cap of $7500, which is double for new parties and candidates.
The original bill stipulated each party must return money transferred to their nominated entities between July 1, 2023 and April 14, 2026 above the previous cap of $5030 that remained in their state campaign accounts on April 15.