
-Carl Richards, New York Times
You are paying taxes now in order to obtain future tax-free growth.
Rather than go through a bunch of tedious explanations, we examine a number of scenarios.
Scenario 1: Conversion during a low tax year
Scenario 1, Example 1:
Bill (40) got laid off in January and took the rest of the year off. His income was $12,000 from interest and dividends and a bit of unemployment. His credits, deductions, and exemption add up to $44,000, so his taxable income is -$32,000. Bill has $32,000 in his IRA so he can convert all of it to a Roth with no additional tax owed. At age 90, the after-tax value of Bill’s Roth IRA will be about 43% larger ($284,700) than the unconverted IRA.
Scenario 1, Example 2:
Sarah (40) terminated a business and took an operating loss of $100,000. Her income was $70,000 from interest and earnings. Her credits, deductions, and exemption are $50,000. Similar to Bill, Sarah can convert $80,000 to a Roth for no tax cost and gain a similar 43% ($709,200) advantage at age 90. If Sarah were to convert another $34,000 (maxing out her 10% and 15% tax bracket and costing $4,681 for income tax), the advantage is about 38% for a total after-tax advantage of $920,700.
Scenario 1, Example 3:
Roger (40) has taxable income of $34,000. He wants to max out the 25% tax bracket this year and expects to be in the 25% bracket during retirement. Roger converts $48,400 costing $12,100 in additional income tax. At age 90, Roger’s advantage is 16% ($196,600). If Roger needs $5,000 annually for living expenses beginning at age 70, the advantage is 19% ($85,100).
Typical reasons for low tax years:
The general rule is that you convert to a Roth in years when your marginal tax rate is lower or the same as the marginal rate expected at age 70 ½.
Scenario 2: Conversion for the benefit of your heirs
Scenario 2, Example:
Abby (40) is a very successful entrepreneur, and thanks to a wildly successful IPO, she has considerably more than she needs for the rest of her life. Understandably, Abby can leave a substantial estate to her 2 children ages 7 and 10. A Roth IRA is tax free for Abby’s lifetime and also for the children’s lifetimes. Therefore the Roth IRA is one of the best items to bequeath to your heirs. Abby’s IRA is $100,000 and she expects to be in the highest tax bracket for the remainder of her life. It costs $35,000 in tax to convert, but at 90, the after-tax value of Abby’s Roth IRA is about 22% larger ($531,700) than the unconverted IRA. If the heirs drawdown the inherited Roth IRA over 40 years, the additional advantage is about 47% ($12,809,600).
The general rule is that when all these are true …
… You should consider converting everything to a Roth IRA as soon as possible.
Scenario 3: Opportunistic conversion
Scenario 3, Example:
Angus (40) had a $500,000 IRA invested in a IPO stock that was clobbered in the recent bear market, so the IRA is only worth $100,000 now. Angus is completely confident that the company will survive and grow and that the IRA value will recover back to $500,000. Needless to say, we think Angus is nuts, but if he is right, it sure is a great time to convert to a Roth. Angus is in the 35% tax bracket this year but expects to be in the 25% bracket when he is 70 ½. Converting now costs $35,000 in tax, but at age 90, the Roth is about 8% larger ($214,000) than the unconverted IRA, and that is if the stock never recovers. If the stock recovers, and is replaced with diversified investments, the Roth IRA advantage is 34% ($3,528,000).
The general rule is if you think your IRA is temporarily at a low valuation, then it may be a good time to convert to a Roth even if your tax bracket is higher now than in retirement.
Scenario 4: Tax diversification conversion
Scenario 4, Example:
Matt (40) has a $100,000 IRA and he doesn’t believe anyone can forecast future tax rates, plus he cannot forecast his income before or after retirement. Since the tax rates are an unknown, Matt wants to consider having regular IRA and Roth IRA accounts . Matt can choose a low-income year for converting some of the IRA to a Roth, and in retirement he can withdraw from the IRA in low-income years and from the Roth in high-income years. Matt gains better control of his taxes since he has access to taxable income from the IRA and tax-free income from the Roth.
General Roth conversion rules:
Some things that could occur that could make the Roth conversion less valuable or even worse than not converting:
All may not be lost however: If you convert to a Roth, you may recharacterize (move the money from the Roth IRA back to the IRA) some or all of the conversion reducing the taxes owed. There are strict time limits on when the recharacterization may occur.
As you can see, analyzing a Roth conversion is complex and involves multiple factors. Financial planners or tax professionals that perform tax planning are able to help you make wise decisions about Roth conversions.
Assumptions used in all the scenario examples:
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