Nope you won't get fined. Our account has us set up to do our tax each March. According to our accountant the cut off is actually the 31st of March. We have been doing it this way for a couple of years now and haven't been fined yet. Also before we set it up this way we were so slack and both didnt lodge our tax returns for 3 years in a row. We thought we would get fined for sure but nope. DH heard nothing and I got a warning letter but that was it.