Roth Conversion Before RMDs: The $87,000 Tax Mistake Retirees Make

The tax bill may not arrive for years. The planning mistake can happen much earlier, when a retiree still has the most flexibility to do something about it.

The Most Valuable Tax Years Can Be the Quiet Ones

Retirement planning has an unusual problem: some of the most important decisions happen when nothing appears to be wrong. A client retires, earned income falls, the IRA keeps growing, and required minimum distributions still feel distant. Here’s the surprising thing the model reveals: the quiet years before RMDs may be the period when the advisor has the most control over the client’s future tax bill.

The opportunity isn’t simply “pay less tax.” It’s control: choosing when income is recognized, how much accumulates inside a traditional IRA, how future Medicare surcharges may be affected, and what tax burden eventually reaches heirs. That kind of foresight can turn a routine retirement review into a high-value planning conversation.

We asked DeepVest AgentLab to model that decision for a 65-year-old retiree and compare waiting with acting during the years before RMDs.

The Exact Prompt We Gave DeepVest

I am an RIA helping a 65-year-old retiree with a $2.4 million traditional IRA, $1.2 million taxable account, $400,000 Roth IRA, $110,000 annual spending need, and Social Security planned at 70; model what happens if the client makes no tax-planning moves before RMDs begin.

Compare that "wait until RMDs" path with a deliberate Roth-conversion strategy from ages 65–72, and quantify the difference in lifetime federal taxes, future RMDs, Medicare IRMAA exposure, Social Security taxation, and the value ultimately left to heirs.

Identify the single biggest tax mistake, show how a seemingly harmless decision at 65 can compound into roughly $87,000 or more of avoidable tax, and explain which assumptions drive that result.

End with the three actions an advisor should review before age 73, plus a concise client-ready explanation; clearly label assumptions and do not be more than 500 words.

The Response DeepVest Produced

Schedule a demo with DeepVest to see how AgentLab can model pre-RMD tax decisions before the planning window narrows.

The Surprise Isn’t the $88,434

The eye-catching number is $88,434Z, but the deeper insight is the system behind it. Roth conversions affect more than one tax return: they change the future IRA balance, future RMDs, Medicare IRMAA exposure, Social Security taxation, and potentially the tax rate heirs face later. A decision that looks isolated at age 65 can ripple through decades of retirement.

That is what makes this type of analysis valuable for an advisor. Instead of discussing Roth conversions as a generic tactic, the conversation becomes a set of measurable tradeoffs: pay some tax earlier, potentially reduce forced taxable income later, accept possible near-term Medicare costs, and preserve more flexibility over where future dollars live.

Why Advisors Should Care About the “Quiet Window”

Clients often feel relief when they retire and their taxable income falls. That relief is real, but it can also hide a planning window that may never appear again in quite the same form. The advisor who recognizes that window can replace “we’ll deal with RMDs later” with a more confident question: “What choices do we still control today?”

DeepVest helps make those choices visible by modeling the interactions rather than examining each variable in isolation. The advisor still supplies the judgment: whether the assumptions are reasonable, whether the client values legacy planning, whether Medicare surcharges matter, and whether paying taxes earlier fits the client’s liquidity and emotional comfort.

From Tax Compliance to Tax Foresight

A tax form tells a client what already happened. Planning asks what could happen next and what decisions remain available before the outcome becomes harder to change. That shift from reaction to foresight is where an RIA can create confidence, clarity, and a stronger sense of control.

The best retirement tax conversation may therefore begin years before the first required distribution. By then, the advisor isn’t scrambling to manage a tax consequence. The advisor has already helped the client understand the tradeoffs, preserve options, and make the decision deliberately.

Schedule a demo with DeepVest to see how DeepVest can support Roth-conversion and pre-RMD planning workflows.

For questions, contact: [email protected]