<prompt> Human: My tax prep accountant who I used for several years missed 415 deadline and wouldnt return my calls. In fact, Id call and theyd say, Ill look into it and get right back to you and not call back. They finally emailed on 420 and said things are under control and they have filed an extension. I am not reassured. I am under the impression I may owe 2013 taxes and should have paid by 415 even with the extension.I am willing to pay the consequences and know I am ultimately responsible. Ive never missed an IRS deadline so I am completely lost about what I should do.Can anyone provide advice about my situation? Many thanks for whatever guidance you can give. Edit: Thanks to advice I got here, I called the IRS and verified that an extension was filed Whew. I will work with tax prep to complete 2013, as quickly as possible. I paid my estimated taxes, so hope whatever tax burden and interest penalty isnt too high. And I will change my tax person and try to avoid this situation again.  <response>: If you owed and its past due, if the accountant is worth a shit, will pay the late filing fines and any interest accrued. Id press for that, pay what you would have owed anyways, and move on down the road. 