YES! all the overdue returns must be lodged as soon as possible to avoid interest charges and fines. If you are voulenterily lodging your late tax returns, you will most probably not get a fined. If wait till the ATO finds out, you will be charged with penalties and interest. If you get a fine, and you have a very good reason for not lodging the tax returns on time, we can try our best to get it remitted. Please talk to us for more information.