<prompt> Human: Got a 1099-R from Vanguard last week saying that my contributions for a Roth IRA conversion from a traditional IRA were taxable. Since the money was already taxed on income isnt this incorrect? The guy at Vanguard said my CPA could figure it out but just seems to not function how I thought it would.  <response>: Vanguard doesnt know whether your traditional IRA balance was deductible or nondeductible. The way this is figured out come tax time is by you correctly filling out Form 8606. 