The Bet at the Heart of Every Roth Conversion
A Roth conversion is a tax bet: pay taxes now at your current rate for tax-free withdrawals later. You win if your current rate is lower than your future rate.
Americans held $13.9 trillion in IRAs at end of 2022, with traditional IRAs accounting for roughly 64% of the total. Source: Investment Company Institute (2023) — Source
The Best Windows for Roth Conversion
Early retirement gap years: Between retirement and when Social Security and RMDs begin — income can be unusually low, ideal for converting at 10% or 12%.
Low-income years: Job loss, sabbatical, career transitions.
Bracket topping: Convert just enough to fill the current bracket without pushing into the next.
The SECURE 2.0 Act raised the required minimum distribution age to 73, giving retirees several additional years of low-income retirement to do Roth conversions. Source: IRS Notice 2023-75 — Source
Calculating the Tax Cost
Example: $200,000 traditional IRA, converting $40,000. Other income: $55,000, standard deduction $14,600.
- Taxable income before conversion: $40,400
- After conversion: $80,400 (still in 22% bracket)
- Tax on conversion: ~$8,800 (22% × $40,000)
- Result: $40,000 grows Roth — all future gains and withdrawals tax-free
Roth accounts have no required minimum distributions, giving retirees more control over their income in retirement. Source: IRS Publication 590-B — Source
See also: tax planning strategies, marginal tax rate calculator, and the tax estimator guide.
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