The NSW Liberal Party will appeal a court decision ordering it to repay almost $250,000 in illegal donations involving money given to the party by two candidates at the last state election.

Former Auburn mayor Ronney Oueik donated $150,000 to a party bank account to fund his unsuccessful campaign for the state seat of Auburn at the 2015 election.

Former Auburn mayor Ronney Oueik donated $150,000 to fund his campaign. Credit:Peter Rae

Glenn Brookes, the Liberal MP for East Hills, paid $50,000 into the same party account.

“The amounts paid into the [Liberal] account were unlawful political donations,” Supreme Court Justice Christine Adamson found, in a case brought against the party by the NSW Electoral Commission.