We can prepare overdue returns even if they’re from several years ago. Remember, the IRS can go back an unlimited number of years for unfiled returns and even if you are not under audit now, do you want that worry hanging over your head indefinitely? On the other side, you may have missed out on refunds to which you were entitled since those can only be claimed for up to three years after the due date of the return. The best time to start is now!