There is another option: Report the income on your tax return even though it's not included in your W-2 and you're not going to get a corrected W-2. To do so:
- Select "Income & Expenses"
- Scroll to the bottom of the screen to "Less Common Income" and click on "Show More"
- Next to " Miscellaneous Income, 1099-A, 1099-C" select "Start" or "Revisit"
- Select " Other income not already reported on a Form W-2 or Form 1099"
- Answer Yes to "Did you receive any other wages?"
- Click through to "Any Other Earned Income" and answer Yes to "Did you earn any other wages?"
- Mark the button next to "Other" for Enter Source of Other Earned Income
- Provide a description such as "Return of Excess 401(k) deferral" and the amount.