Read the Related Story: The Cost of Roth IRA Conversions

Our calculator will give you a rough estimate of the tax hit from converting a traditional IRA to a Roth IRA, based on certain assumptions, including that your income (not counting the conversion) remains relatively stable in 2010, 2011 and 2012. We also do not take into account any possible impact of the alternative minimum tax. The deadline for making a 2010 Roth conversion is December 31. (Learn more about the benefits of a Roth IRA conversion in our special report.)

Compare the tax hits you'll face on a 2010 Roth conversion if you:

     • report 100% of the conversion as income on your 2010 tax bill (due in April 2011) , or

     • split the conversion 50/50 on your 2011 tax bill (due in April 2012) and 2012 tax bill (due in April 2013) -- and we'll even show you how those tax bills will vary depending on the expiration/extension of the Bush tax cuts