A retired CPA, age 63, is questioning whether a Roth conversion is necessary despite holding a $1.2 million 401(k). The individual states that their future marginal tax rate is not expected to differ significantly from their current rate. This assumption forms the basis of their hesitation to engage in the strategy.
Financial advisors note that the decision hinges on more than just a flat comparison of tax brackets. With a substantial retirement account, required minimum distributions (RMDs) could push taxable income higher than anticipated once they begin at age 73. Those RMDs might also increase Medicare premiums through income-related monthly adjustment amounts (IRMAA).
A conversion involves moving pre-tax retirement funds into a Roth IRA and paying income taxes on the amount converted now. The advantage is that future withdrawals, including any investment growth, become tax-free. For a retiree with a large balance, this can create significant tax-free income later in life.
However, the timing matters. Converting a large sum in a single year could spike the individual’s tax bracket well above their current level. A more measured approach, such as converting smaller amounts annually, could keep the tax impact within a manageable range. This strategy allows the retiree to fill lower tax brackets incrementally.
The current tax rates, established under the Tax Cuts and Jobs Act, are scheduled to sunset after 2025. If those rates revert to higher levels, the cost of a future conversion could rise. The CPA’s assumption of a stable rate does not account for potential legislative changes that could affect long-term planning.
Another consideration is the survivor scenario. For a married couple, the death of one spouse results in the surviving partner filing as an individual, which carries narrower tax brackets. This could subject the surviving spouse to higher taxes on the same RMD income. A conversion could mitigate that risk by reducing the pre-tax balance.
The retiree’s professional background as a CPA does not automatically settle the debate. While they grasp the technical details, personal circumstances, such as charitable giving plans or unexpected medical expenses, can alter the calculus. Those who plan to leave a legacy might find Roth accounts more attractive for heirs, as inherited Roth assets are generally tax-free.
Advisors suggest running a multi-year projection that factors in RMDs, Social Security claiming decisions, and potential healthcare costs. A single-year snapshot of tax rates is insufficient for such a consequential choice. Even a retired CPA may benefit from modeling various scenarios before concluding that a conversion is unnecessary.
Ultimately, the answer depends on the individual’s cash flow. To convert, the retiree must pay the tax from outside the retirement account to maximize the benefit. Using funds from the 401(k) itself for taxes would reduce the amount transferred and undermine the long-term gains. Without available cash, a conversion may be impractical.
The decision also requires weighing the risk of future tax hikes against the certainty of paying taxes today. If the retiree is confident that their income will remain stable and that they can manage RMDs without issue, skipping the conversion is defensible. But that confidence requires verification through detailed planning, not just a general expectation.
The individual’s age of 63 offers a window of opportunity. With roughly a decade before RMDs begin, there is time to execute a phased conversion if they choose. Waiting too long could force larger conversions under less favorable conditions. This timeline makes the current moment a critical point for evaluation.
