Regardless of the details, a rollover from a 401(k) is always reportable on your tax return, even if nontaxable.
A nontaxable direct rollover from the designated Roth account in the 401(k) to a Roth IRA would be indicated by code H in box 7 of the Form 1099-R. A taxable direct rollover from the traditional account in the 401(k) to a Roth IRA would be reported with code G in box 7 and the taxable amount, usually the entire amount, in box 2a. Only indirect rollovers are subject to the 60-day rollover deadline and would be reported with a different code in box 7 than the codes for direct rollovers.
You moved it to a ROTH? Was the 401K also a Roth? You will owe tax on the whole amount. Did they take any tax withholding out of it? You had to roll it into a Traditional IRA to avoid the tax. Was it a direct transfer from the 401K or did you get a check and take it to the IRA? You had 60 days to put it in the IRA. You will get a 1099R for it.
Enter a 1099R under
Federal Taxes Tab or Personal (Home & Business)
Wages & Income at the top
Then scroll way down to Retirement Plans and Social Security,
Then IRA, 401(k), Pension Plans (1099R) - click Start or Revisit
There are 4 boxes. Be sure to pick the right box for the kind of 1099R you got.
If you are filing a Joint return be sure to pick which person it is for.
Regardless of the details, a rollover from a 401(k) is always reportable on your tax return, even if nontaxable.
A nontaxable direct rollover from the designated Roth account in the 401(k) to a Roth IRA would be indicated by code H in box 7 of the Form 1099-R. A taxable direct rollover from the traditional account in the 401(k) to a Roth IRA would be reported with code G in box 7 and the taxable amount, usually the entire amount, in box 2a. Only indirect rollovers are subject to the 60-day rollover deadline and would be reported with a different code in box 7 than the codes for direct rollovers.