Your BAS must be lodged on time, otherwise you will receive warning and then penalty.
GST & BAS
GST stands for goods and service tax issues by the government. There is a 10% GST charge, however this does not apply to agricultural products and basic food. If your annual turn over is less that $75,000, you can choose whether or not you register your GST, where as if your annual turnover is more than $75,000, you must register your GST and lodge your BAS quarterly. This applies to both self-employed (sole traders) as well as companies.
BAS must be lodged on the 28th of each month following the quarter, this does not apply to the month of January, whereby BAS must be lodged by February 28th instead.