You will receive a Form 1099-R later in January or early February from the prior employer for the distribution from the 401(k). There will be an amount of the distribution, the taxable amount of the distribution and federal income taxes withheld on the form. You report the Form 1099-R on your 2023 tax return if the distribution occurred during 2023.
If you are under the age of 59 1/2 when the fund were distributed there will be a 10% early distribution penalty assessed on your federal tax return, Form 1040.
To enter, edit or delete a form 1099-R -
Click on Federal Taxes (Personal using Home and Business)
Click on Wages and Income (Personal Income using Home and Business)
Click on I'll choose what I work on (if shown)
Scroll down to Retirement Plans and Social Security
On IRA, 401(k), Pension Plan Withdrawals (1099-R), click the start or update button
