Dear Liz: I am a CPA and fairly knowledgeable about investing, but I have a question about my IRAs. I am 58 and my husband is in his mid-80s. We both are retired with federal pensions and no debt other than a mortgage. My plan is to start taking money annually from my traditional IRA in two or three years. I want to reduce the required minimum distribution I will need to start taking at age 701/2 and lessen the tax impact at that time. Should I put these annual withdrawals in my regular investment account or should I put them in the Roth IRA? My goal is to lessen the tax impact on my only child when he ultimately inherits this money. Does my plan make sense?

Answer: Your letter is proof that our tax code is too complex if it can stymie even a CPA. Still, it’s hard to imagine any scenario where you’d be better off accelerating withdrawals from an IRA and putting them in a taxable account.

A required minimum distribution “is merely a requirement to take the money out anyway,” said Certified Financial Planner Michael Kitces, an expert in taxation. “All you’re doing by taking money out early to ‘avoid’ an RMD [required minimum distribution] is voluntarily inflicting an even more severe and earlier RMD on yourself.”

In other words, you’d be giving up future tax-advantaged growth of your money for no good reason.

What might make sense, in some circumstances, is moving the money to a Roth. You can’t make contributions to a Roth if you’re not working, because Roths require contributions be made from “earned income.” What you can do is convert your traditional IRA to a Roth, either all at once or over time. You have to pay taxes on amounts you convert, but then the money can grow tax-free inside the Roth and doesn’t have to be withdrawn again during your lifetime, since Roths don’t have required minimum distributions. Whether you should convert depends on a number of factors, including your current and future tax rates and those of your child.

“In other words, if your tax rate is 25% and your child’s is 15%, just let them inherit the [traditional IRA] account and pay the lower tax burden,” said Kitces, who has blogged about the Roth vs. traditional IRA decision at http://www.kitces.com. “In reverse, though, if the parents’ tax rate is lower … then yes, it’s absolutely better to convert at the parents’ rates than the child’s. In either scenario, the fundamental goal remains the same — get the money out when the tax rate is lowest.”

If you do decide to convert, remember that the conversion itself could put you in a higher tax bracket.

“It will be important not to convert so much that it drives up the tax rate to the point where it defeats the value in the first place,” Kitces said. “Which means the optimal strategy, if it’s to convert anything at all, will be to do partial Roth conversions to fill lower tax brackets but avoid being pushed into the upper ones.”