I’m 40 and my advisor wants me to switch from Roth to traditional 401(k). Dave Ramsey says it’s a million-dollar mistake

A 40-year-old caller phoned into The Ramsey Show with a nagging feeling. Her financial advisor had told her to stop funding her company’s Roth 401(k) and redirect the money into a traditional 401(k) instead, pointing to her income level and the immediate tax deduction. She planned to max out at $24,500 a year either way, the full IRS limit for 2026. She suspected something was off but couldn’t identify the specific circumstance that would make the switch worthwhile.

Dave Ramsey did not hedge. “You need to get a new financial advisor that can actually do math,” he told her, then added, “I’m flabbergasted that somebody could be this dumb and call themselves a financial advisor.”

The Verdict: Ramsey Is Right on the Math

For a 40-year-old with a 25-year runway and the cash flow to max contributions, the Roth almost always wins. The logic is straightforward: the tax deduction on a traditional 401(k) applies only to the money you put in, while every dollar of growth on top of that comes out taxable in retirement. A Roth flips the equation. You pay tax on the seed. The harvest is yours.

Ramsey walked through the numbers live. Contributing $24,500 a year over 25 years produces a projected $3.1 million by age 65. Total contributions add up to roughly $612,500. The remaining $2.5 million is pure growth, and that gap is the entire ballgame.

Here is how Ramsey framed the trade the advisor was pitching: “He’s telling you to save taxes on $600,000 of the $3.1 million, but for doing that, you get to pay taxes on $2.5 million.” He pegged the tax exposure on that growth at $700,000 to $800,000 and called it almost a million-dollar mistake. “A guy that makes a million-dollar mistake, you don’t keep,” he said.

The inflation backdrop sharpens this case rather than softening it. Consumer prices rose 3.5% annually through June 2026 and 3.4% through July 2026, according to the Bureau of Labor Statistics. Persistent price pressure tends to push tax brackets and future tax rates higher over time, which is precisely the environment where locking in today’s rate through a Roth pays off most.

Run your own numbers and you will see the same pattern Ramsey drew on air. The larger the growth relative to contributions, the worse the traditional account looks by comparison.

The Inheritance Trap Nobody Talks About

The tax bill does not stop at retirement. Ramsey flagged the inheritance angle, which is where the traditional account gets even uglier. Under the Secure Act, heirs must fully draw down an inherited traditional IRA within 10 years. On a $3.1 million balance, that means roughly $300,000 a year in forced taxable distributions stacked on top of whatever your kids already earn, likely pushing them into a top bracket for an entire decade.

A Roth inheritance carries the same 10-year drawdown rule but no income tax on the distributions. “It’s harder in retirement, it’s harder in inherited, and you pay light-years more taxes. There’s no case where this is not going to happen,” Ramsey said.

The Variable That Could Flip the Math

The one factor that could genuinely tilt this calculation in favor of a traditional account is a real conviction that your retirement tax rate will be dramatically lower than your working rate. That is a bold call to make. The federal funds rate target sits at 3.75%, but rate paths and tax policy move independently. Federal deficits, entitlement funding pressures, and the 2.8% Social Security COLA for 2026 all point toward pressure for higher revenue collection over a 25-year horizon, not lower.

If you retire with a $3 million balance plus Social Security plus required minimum distributions, your effective bracket in retirement can easily match or exceed your bracket today. That is the scenario Ramsey’s math assumes, and it is the realistic one for someone maxing contributions for 25 years straight.

What to Do This Week

Four steps are worth taking right now.

1. Log into your 401(k) portal and confirm whether your plan offers a Roth option. Many do and employees never enable it.
2. Model both paths using an IRA comparison calculator with your actual salary, contribution, and expected return. Pay close attention to the after-tax balance at 65, not the gross number.
3. Ask your advisor to show the math in writing, including the tax on projected growth and the Secure Act drawdown impact on heirs. If they cannot, get a second opinion.
4. Keep in mind that employer matching contributions always go into a traditional (pre-tax) bucket, so you gain some tax diversification automatically regardless of which type you choose for your own dollars.

Individual situations vary and a qualified tax professional should review your specifics. The principle Ramsey hammered on is durable: when the growth dwarfs the contributions, you want the growth to come out tax-free.

Editor’s note: This article has been updated to reflect the correct 2026 IRS 401(k) contribution limit of $24,500, replacing the previously cited $24,000 figure, and to incorporate the June 2026 annual CPI reading of 3.5% and the July 2026 reading of 3.4% from the Bureau of Labor Statistics in place of raw index-level figures.

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