There is a hidden gotcha for all people who opened a non-deductible IRA in 1997 and then convert it to a Roth IRA in 1998. Most likely you will owe taxes on the non-deductible amount even though you paid taxes on the non-deductible amount in 1997 and even if the non-deductible amount didn't have earnings. The following information from Vanguards web site at "http://www.vanguard.com" explains why. What if I open a traditional IRA with a nondeductible contribution in 1997 and then convert it in 1998? If it had no earnings, I wouldn't have any tax liability, would I?
The IRS does not allow you to designate only nondeductible IRA assets for conversion. A conversion is considered a prorata distribution from the nondeductible and deductible contributions and earnings in all your IRAs. Thus, your tax liability is based on the balance of all your IRAs. What does the law mean by "the balances of all your IRAs"?
This means that you must consider the balances of all traditional IRAs and rollover IRAs (also known as conduit IRAs) in the calculation. The balances of 403(b) plans and qualified plans, such as 401(k) plans, are not included for this purpose.
How do I determine what percentage of my conversion is taxable?
IRS Form 8606-Nondeductible IRAs (Contributions, Distributions, and Basis)-is used both for reporting nondeductible contributions and for determining the taxable amount of your distributions if you have made nondeductible contributions. Because a conversion is considered a distribution from a traditional IRA and a rollover contribution to the Roth IRA, you would use IRS Form 8606 to figure the taxable portion of the conversion. The form uses a fairly simple formula. Form 8606 can be downloaded at the IRS website.
I have made both deductible and nondeductible contributions to my traditional IRAs. Can I elect to convert only the nondeductible portion so I can avoid taxes on the conversion?
No. As with any other traditional IRA distribution, if you have made both deductible and nondeductible contributions, each distribution is treated as a proportionate distribution of nondeductible contributions and deductible contributions and earnings. You may not identify a distribution as a return of a nondeductible contribution only.
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