did you send money? That was a mistake.
you should wait for a bill from IRS. They may not impose that fine.
On the forum you will see that IRS has been asking recently for 1040-X in this situation. You might get such a letter.
Form 8606 can be filed alone, only when no Form 1040 is required. Otherwise attach 8606 to your tax return.
Use Form 1040-X to add or change info on an already filed tax return.
IRS may also want proof you did not take an IRA deduction in those years.
