Explanation letter

[ndp4949]

Hello,

I had a plan offset from my 401K loan from my old company in 2022.  I got the form the old company showing the plan offset but I didn't pay it back until 2023, so I don't have the tax documents (I think 5498 showing the rollover).  I want to give a letter of explanation to explain this since the 1099-R was generated and I don't have the other piece of it.  Can I provide this when I file electronically?  Is it even necessary?

[rjs]

The IRS does not want explanations that are not required by the rules. The IRS instructions for Form 1040 say "Don't attach correspondence or other items unless required to do so." If the IRS has a question about your tax return or wants more information, they will send you a letter asking for it.