If your spouse overcontributed to a 401(k) in 2018 and the excess will be distributed by 4/15/2019, you need to include the excess contribution to your 401(K) on line 1 of your 2018 Form 1040. (See instructions below)
- You do not need a corrected/amended W2.
- You will not need or receive a 2018 Form 1099-R because the distribution will be in 2019 (See last paragraph which explains the Form 1099-R's that you will receive for 2019 and what to do with them)
Follow these steps to report the excess 401(K) contribution on your 2018 Tax Return:
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- Click on the "Wages & Income" Tab
- Click on "I'll choose what I work on"
- Scroll down to "Less Common Income"
- Select "Miscellaneous Income" and click Start or Update
- Select "Other income not already reported on a Form W-2 or Form 1099" and click on Start
- Answer "Yes" to the Question "Did you receive any other wages?"
- Click "Continue" through the questions until you get to the section "Any Other Earned Income"
- Answer "Yes" to "Did you earn any other wages?"
- Indicate "Other" as Source of Other Earned Income and click Continue
- For the description enter "2018 Excess 401K Deferrals" and click on Done
You will receive a Form 1099-R in 2019 with a code P in box 7 which you can ignore if the excess deferral is reported as suggested above. However, the earnings (if any) will be reported on a separate 2019 Form 1099-R with a Code "8" in Box 7 that should be reported on your 2019 tax return.
Please comment below if you need further clarification.
