In Australia, renters younger than 25 although over 21 years of age are subject to a Young Driver Surcharge, which is a daily fee applied by the car rental companies. 


The amount depends on which car rental company you have rented your vehicle with. 


See following a guide:


Budget:..............$16.50* per day, per each under aged Driver - NOT Probationary/Provisional P Plate Licence holders



Avis:....................$27.50* per day per each under aged Driver - NOT Probationary/Provisional P Plate Licence holders


Enterprise:.......$20.00* per day $20* per day per each under aged Driver


Europcar:..........$30.25* per day per each under aged Driver - NOT Probationary/Provisional P Plate Licence holders


Thrifty:...............$27.50* per day per each under aged Driver - NOT Probationary/Provisional P Plate Licence holders


Hertz:..................$16.50* per day per each under aged Driver -NOT Probationary/Provisional P Plate Licence holders 

 

 * All extra add-ons will attract additional percentage taxes and surcharges.