JohnB5677
Employee Tax Expert

Get your taxes done using TurboTax

I have always adhered to the process stated above, and have had success.

However:

  1. I ‌agree with @dmertz that the IRS is probably not going to evaluate the 8606 on the current tax return.
  2. I have no idea how long the IRS maintains records. 
    1.  I'm sure it's in excess of 10 years
    2. However, unless it's an extreme circumstance I don't think they would go back that far.

@BTRR 

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