Also note that your extensions have expired. An extension is only for 6 months. You are now just filing late for all prior years. If you are getting a refund there is no penalty for filing late. However, it's too late to get a refund for 2015 or earlier. You can file the tax return, but if it shows a refund you will not get the refund. If you owe tax for an earlier year, you must file the tax return and pay any tax that you owe. The IRS will then bill you for penalties and interest for filing late and paying late.
