Thank you for your answer. I apologize if my original post wasn't sufficiently clear.
During year 2018 I made an employee contribution to my SEP IRA account. Since it was made with after tax funds, the contribution is non deductible. I see that my broker recorded the contribution with the IRA by the use of Form 5498, but I have not notified myself about this contribution to the IRS. The purpose of this question is to clarify whether I need to file Form 8606 or not, given the fact that my broker already filed a related form with the IRS.
