Code B indicates a distribution from a designated Roth account in an employer plan like a 401(k). When the Form 1099-R is entered into TurboTax, TurboTax will include on Form 1040 line 5a the amount from box 1 and, if not rolled over to another Roth account, will include on line 5b the taxable amount from box 2a. If box 7 includes code 1 in addition to the code 8, TurboTax will include the 10% early-distribution penalty ($1 penalty on the $8.20 taxable amount that results if not rolled over) on Form 5329 Part I.
