SmartAsset: Gradual Roth Conversions Offer Tax Control for Large IRA Balances
With Required Minimum Distributions mandatory from age 73, strategic partial conversions can manage tax liabilities and preserve estate value for heirs.
Financial experts at SmartAsset are advising individuals with substantial pre-tax retirement savings to consider gradual Roth IRA conversions as a method to manage tax liabilities and mitigate the impact of Required Minimum Distributions (RMDs). The guidance highlights that converting large balances, such as a hypothetical $650,000 account, all at once could trigger a significant tax bill, potentially pushing taxpayers into the highest marginal bracket.
Under current regulations, mandatory RMDs begin for traditional IRAs at age 73, or age 75 for those turning 74 after 31 December 2032. Large withdrawals can increase taxable income, pushing retirees into higher income tax brackets. For instance, a single filer with $75,000 in other taxable income facing a $95,000 RMD could be pushed from the 22% bracket into the 24% bracket, increasing their overall tax liability.
SmartAsset notes that converting a $650,000 IRA balance in a single transaction could automatically increase a single filer’s tax rate to 37%, the highest marginal rate, resulting in an estimated tax bill of approximately $193,000. This does not account for other income sources that might further compound the tax impact.
A gradual conversion strategy involves converting amounts sufficient to fill the current tax bracket, thereby minimising immediate tax impact. For example, if an individual has $75,000 in taxable income, they might convert $28,350 to raise their total to $103,350, which is the top of the 22% bracket for 2025. This approach allows retirees to secure tax-free growth for heirs while avoiding the shock of a massive one-time tax event.
The five-year rule for Roth conversions is another critical consideration. Withdrawals from converted funds within five years may incur a 10% early withdrawal penalty, although this does not apply to individuals aged 59½ or older. Additionally, while Roth accounts are not subject to RMD rules, the funds remaining in the traditional IRA continue to grow, meaning RMDs will still apply to the unconverted portion.
Investors must also account for fluctuating investment returns and annual adjustments to tax brackets, which can affect the efficacy of conversion strategies. SmartAsset recommends consulting a financial advisor to determine if a Roth conversion strategy aligns with individual financial circumstances, filing status, and other income sources.
