Will a Roth Conversion Actually Leave You With More Money? The Answer Almost No One Gives You

Last updated: October 12, 2026

You’ve probably heard the pitch. Convert your IRA to a Roth, pay the tax now, and you’ll come out ahead. It gets sold as a no-brainer, the financial equivalent of free money if you just act fast enough.

I want to be straight with you, because that’s the whole point of how I work. When you run the actual math on a Roth conversion, carefully, year by year, on real software instead of a free web calculator or even an advisor using software that doesn’t analyze all the relevant variables, you find something the pitch leaves out. For a lot of people, converting doesn’t leave them with more money to spend in their own lifetime. Sometimes it leaves them with a little less.

That’s not a reason to never convert. It’s a reason to find out which kind of person you are before you write the check. Let me walk you through the version with the math behind it.

What a Roth Conversion Really Trades

Here’s the trade in plain language. A conversion moves money out of your pre-tax IRA or 401(k) and into a Roth, and you pay ordinary income tax on every dollar you move in the year you move it. In exchange, that money grows tax-free from then on, with no Required Minimum Distributions and no income tax bill when it passes to your family.

The catch is the tax bill today. You have to pay it from somewhere. And the dollars you use to pay it are dollars that stop compounding for you. If you pay the tax out of the IRA itself, it’s worse, because you have to pull out extra just to cover the tax on what you pulled out. That’s why where the tax comes from changes everything, and it’s a big enough topic that it deserves its own conversation. The whole bet rests on one assumption, that your rate later will be higher than your rate now, so it is worth looking at how your retirement tax bracket is likely to compare with today’s before you pay a dime.

When you add it all up over a 25 or 30-year retirement, the money you’d have had to spend on yourself often lands in roughly the same place whether you convert or not. The conversion didn’t make you richer in your own lifetime. Which means the real question isn’t “does converting save tax.” It almost always saves tax somewhere. The real question is who the saving lands on, you or your kids.

The Question That Decides It: Are You a Spender or a Leaver?

Most people assume the dividing line is wealthy versus not wealthy. It isn’t. The line that actually decides whether a conversion helps you is whether you’re a spender or a leaver.

A spender plans to use their retirement accounts to live on. The IRA is there to be spent down over the years, turned into trips and groceries and spoiling grandkids and a comfortable life. If that’s you, a conversion usually doesn’t help, and here’s the part that surprises people: the longer you live, the worse it tends to look. You paid a big tax bill up front, and then you spent the money down anyway. You never got enough tax-free growth on the back end to earn that bill back.

A leaver is different. A leaver doesn’t expect to spend the whole IRA. They live on Social Security and other income, and the retirement account is, in their own words, “the kids’ money.” If that’s you, a conversion can absolutely win, and for you the math runs the other direction: living a long life and having the surviving spouse who lives many more years actually helps, because the Roth keeps compounding tax-free the whole time, and whatever your heirs inherit comes to them without the tax trap a pre-tax account would carry.

That tax trap is what makes the leaver case strong. Under current rules, most adult children who inherit a traditional IRA have to empty it within ten years, often landing right in their own highest-earning years, stacked on top of the income they already have.¹ It’s the last link in the chain I call the Tax Avalanche. A Roth inheritance sidesteps that bill entirely.

And notice what this means. Plenty of people who aren’t wealthy at all are leavers. They live modestly, their retirement savings is almost entirely pre-tax, and they fully intend to pass it on. They’re exactly the people the “convert everything” crowd ignores, and exactly the people a conversion can help most. It was never about the size of the account. It’s about what you intend to do with it.

The Part the Trade-Off Leaves Out: Guaranteed Income and Getting In Early

Here’s where most of the analysis you’ll read still misses something, and it’s the heart of how I plan differently.

The whole “you’ll have less to spend if you convert” conclusion quietly assumes one thing: that you’re funding your entire lifestyle out of your portfolio, drawing it down year after year and hoping the markets cooperate. Under that assumption, every dollar you hand to the tax man today is a dollar you can no longer draw on. The trade-off is real.

But that’s not the only way to build a retirement. When you cover your essentials with a guaranteed income floor first, what we call guaranteed lifetime income, or Protected Lifetime Income, the picture changes. Income bought correctly, and ideally bought early, lets you create the same paycheck out of less money. There’s a real wholesale-versus-retail effect here: starting up to roughly ten years before you need the income can produce far more guaranteed income per dollar than waiting until the day you retire.

Follow what that does to the conversion question. If it takes less of your money to lock in the income you need, then more of your money is free to do other things, including filling up the low-tax window between when you stop working and when RMDs begin.¹ You convert in those calmer years, at rates you can see. And Roth money isn’t only an inheritance, it can become income too. Instead of the old either-or, spend less now to leave more later, you can sometimes land in a much better place: you may not have to spend less, and you may still leave more.

That’s the difference between asking “should I convert” in isolation and asking “how do guaranteed income and good timing change what a conversion can do.” It’s also why I push to get to this early, in your fifties and early sixties rather than at the RMD doorstep. The earlier we look, the more room there is to work with.

Why Living a Long Life Helps a Leaver and Hurts a Spender

This one trips people up, and it’s worth serious consideration. We’re used to thinking a long life is always the happy case in retirement planning. With conversions, longevity cuts both ways.

If you’re a spender drawing your accounts down, a long life means more years of withdrawals, and the up-front tax you paid to convert had less and less chance to earn itself back, because the balance was shrinking the whole time. Longevity works against the conversion.

If you’re a leaver, a long life is exactly what makes the conversion shine. Every extra year is another year of tax-free compounding inside the Roth, and for a married couple, the surviving spouse often lives many years beyond the plan most people sketch out. Those are years your Roth keeps growing untouched and your heirs’ eventual inheritance keeps getting cleaner. The same long life that hurts the spender helps the leaver. Same tool, opposite outcome, decided entirely by which one you are.

There’s a related point worth knowing for couples. When one spouse passes, the survivor usually moves to the single tax brackets, which are far less forgiving, a problem I’ve written about in the story of the widow whose tax bill went up after her income went down. Converting while both spouses are alive, in the wider joint brackets, is one of the more efficient ways to soften that.

Free to Look, Expensive to Guess

Here’s the line I come back to with everyone who asks me about converting. Running the numbers is free, and it’s completely reversible. The conversion itself is not. The rules no longer let you undo a conversion the way you once could. Once it’s done, it’s done. That asymmetry is the whole argument. It never hurts to look. It can hurt to act without looking, or to look in the wrong direction and get the wrong advice.

And please be careful with the free online Roth calculators. Most of them will lie to you, even by accident. They use a flat tax rate instead of your real year-by-year effective rate, they ignore Social Security taxation and Medicare surcharges, and they quietly assume you have some magic outside account to pay the tax from. When we look at your situation, we run your numbers on what we believe is the most accurate conversion engine in the industry, the kind of detailed software those free calculators wish they were. That’s the difference between a guess and an answer.

The Practical Question

Here’s the key. Before anyone tells you to convert, or not to, ask yourself the question that actually decides it. Do you plan to spend this money, or leave it? Is there money outside the IRA to pay the tax? And has anyone ever shown you what your conversion looks like when you also have a guaranteed income floor doing some of the heavy lifting?

If no one has put those pieces on the table together, you don’t yet know your answer. You’ve heard the pitch, but you haven’t seen your more comprehensive and more accurate numbers. The good news is that looking costs you nothing, and it’s the one step in this whole process you can always take back.

If you’d like to see your real numbers, including whether you fall on the spender or the leaver side of the line, that’s exactly what we work through in a Retirement Income Blueprint call. Fifteen to thirty minutes, no cost, no obligation. You leave knowing where you stand.

What Is the Sweet Spot for a Roth Conversion?

The usual sweet spot is converting just enough each year to fill up your current tax bracket without crossing into the next one. The best years for it are often after the paychecks stop and before Social Security and required minimum distributions, at 73 or 75 depending on birth year, push your income up.

A sweet spot isn’t the only test. Filling a bracket is a starting point, not proof that a conversion makes sense or that it’s the right bracket to stop at. Many other factors need a close look first.

Here are the 2026 lines:³⁴⁵

Two more ceilings don’t show up in a bracket chart, which is why the bracket alone isn’t the best way to judge a conversion. Medicare’s surcharge uses your income from two years earlier, so a conversion today can raise your premiums two years from now.⁶ And once Social Security starts, extra income can make more of your benefits taxable.⁷ There’s also the new $6,000 senior deduction, which phases out above $75,000 of income for a single filer and $150,000 for a couple.⁸

Look at the single column, too. After one spouse dies, the survivor eventually files single, in a later tax year, with brackets roughly half as wide. Converting while both of you are alive and filing jointly can be cheaper. See The Widow’s Tax Trap.

A conversion can’t be undone.⁹ Leave yourself a cushion below the line.

About Kurt H. Jackson

Experience: Since founding KJ Financial in 2010, Kurt H. Jackson has worked with retirees and pre-retirees across Missouri, Nebraska, Kansas, Iowa, and Florida who discovered that the retirement plan they had built around a fixed withdrawal rule was far more fragile than they realized. He has worked directly with clients coming out of the 2008 crash, and with clients who retired into the 2020 COVID drop and the inflation spike of 2021 to 2023, and he has seen firsthand what sequence of returns risk does to a withdrawal-only strategy versus a Lifestyle-First plan with a guaranteed income floor. Before founding KJ Financial, he spent 20 years as a Certified Mortgage Planner working with more than 1,000 clients on major financial commitments, giving him deep insight into how financial decisions compound over time.

Expertise: Kurt is a Retirement Lifestyle Architect and the creator of the Lifestyle-First Retirement Income Planning framework. He builds guaranteed lifetime income, which he calls Protected Lifetime Income (PLI), under both his clients’ essentials and their non-negotiables, the adventures, the experiences and the memories with those they care about. With that income floor in place, the rest of their money no longer has to pay the bills, which means it doesn’t have to be sold in a down market. He is Life and Health Insurance Licensed in MO, NE, KS, IA, and FL. His practice focuses exclusively on insurance-based, tax-optimized retirement income strategies. He does not manage investments or sell securities.

Authoritativeness: Kurt founded KJ Financial and operates MaxMyRetirementIncome.com as a dedicated educational resource for retirees. His work is grounded in peer-reviewed and independently published research, cited directly on each page. He applies that research to the practical income planning decisions retirees face every day in the states he serves.

Trustworthiness: KJ Financial is a compliance-first firm. All figures and research citations on this page are sourced from publicly available, independently published studies and are linked directly in the content. Kurt is paid by commission from the insurance company that issues the policy. Kurt H. Jackson is not a securities broker, registered investment advisor, or CPA. Guarantees rely on the claims-paying ability of the issuing insurance company.

Contact KJ Financial:
1014 E. 5th St., Maryville, MO 64468
Direct: 816.582.5532
Email: kurt@kjfinancialonline.com
Website: www.MaxMyRetirementIncome.com