Nondudctible IRA converted to Roth IRA

[Guest Karen Miranda]

Can I convert a nondeductible IRA to a ROTH IRA without also converting other 401k rollover IRA's to a ROTH IRA??

Will basis be just balance of nondeductible IRA's?

[Mary Kay Foss]

When you convert an IRA to Roth it doesn't matter that all the funds transferred were from a Nondeductible IRA. All of the IRAs you own are considered as one; the dollar amount converted will be partially basis from the nondeductible IRAs (nontaxable) and partially earnings and deductible or pretax contributions. Form 8606 is used to make the calculation.