How can i find out what years i failed to file taxes
Contact the IRS. I received notification from them after I inadvertently forgot to send a 1099 with my return when I was working as an independent contractor. However, if you haven't been notified it's best to call to avoid interest and penalties.
You can find out by getting in touch with the IRS. They will notify you of your pending taxes and a deadline of when you will be required to file them.
Call the IRS. The deadline for filing has obviously passed, despite the answer previously given by someone who probably never pays taxes.