Affluent couple in their early-to-mid 60s discussing Roth conversion strategy with CPA for retirement tax planning

Roth Conversion Strategy: How to Defuse the $1.6M Tax Bomb in Your IRA

February 15, 202612 min read

I need to tell you something that might make you angry.

If you have $2 million or more in traditional retirement accounts, there's a tax bomb sitting in your future. And your CPA probably isn't saying a word about it.

Not because they're incompetent. Not because they don't care.

But because they're paid to file taxes, not plan around them.

Let me show you what I mean.

The Government's Retirement Wealth Seizure Plan

Robert came to my office three years ago. Successful career. $4 million in his traditional IRA. Thought he'd done everything right.

His CPA had filed his returns for 22 years. Never mentioned the problem coming at age 73.

That's when the government forces you to start withdrawing money from your traditional IRA. They call them Required Minimum Distributions—RMDs.

Here's what Robert's looked like:

Year 1 (age 73): $146,000 forced withdrawal
Year 5: $175,000
Year 10: $250,000
Year 15: $350,000+

Every dollar taxed as ordinary income. At the highest rates.

Robert's total tax bill over his retirement? $1.6 million.

His CPA? Still filing returns. Still saying nothing.

Why Your Advisor and CPA Aren't Talking About This

Here's the thing many people don't understand:

Your CPA looks backward. They file what already happened.

Your investment advisor manages your portfolio. They watch your account balance.

But nobody's watching the tax train coming down the track.

It's not their fault. It's how the system works.

CPAs get paid to prepare returns, not prevent problems.

Investment advisors get paid on assets under management, not tax efficiency.

And you? You're assuming someone's looking out for your best interests.

They're not.

Affluent couple in their early-to-mid 60s discussing Roth conversion strategy for retirement tax planning

The Real Cost: A $1.6 Million Family Tax Disaster

Let me walk you through Robert's numbers. Because this isn't theory. This is math.

Starting Point:

  • Robert has $4 million in his traditional IRA at age 73

  • The government forces him to start taking Required Minimum Distributions (RMDs)

  • Every dollar withdrawn is taxed as ordinary income

Year-by-Year Breakdown Explained:

Ages 73-77 (First 5 Years of Retirement)

  • What Robert must withdraw each year:$146K-$175K

  • What he pays in taxes each year:$56K-$70K per year

  • Total taxes paid over these 5 years:$280K-$350K

Ages 78-82 (Next 5 Years)

  • What Robert must withdraw each year:$200K-$250K

  • What he pays in taxes each year:$80K-$100K per year

  • Total taxes paid over these 5 years:$400K-$500K

Ages 83-87 (Next 5 Years)

  • What Robert must withdraw each year:$280K-$350K

  • What he pays in taxes each year:$112K-$140K per year

  • Total taxes paid over these 5 years:$560K-$700K

Ages 88-92 (Next 5 Years)

  • What Robert must withdraw each year:$350K+

  • What he pays in taxes each year:$140K+ per year

  • Total taxes paid over these 5 years:$700K+

The Bottom Line:

Over 20 years of retirement (ages 73-92):

  • Total taxes paid: $1.6 million to $2 million

  • That's an average of $80K-$100K in taxes EVERY SINGLE YEAR for 20 years

What Makes This Worse: The Widow's Tax Penalty

Robert's wife Linda will face an even bigger problem.

When Robert dies, Linda becomes a single filer. Same income. Higher tax brackets.

That $250,000 RMD that was taxed at 35%? Now it's taxed at 37% or more.

The tax bomb just got bigger.

And here's what really hurts: This was completely avoidable.

The Roth Conversion Strategy: A Different Approach

There's a better way. We call it a Roth conversion strategy.

Here's how it works:

Instead of letting the government force withdrawals at the worst possible time, you convert portions of your traditional IRA to a Roth IRA strategically—on YOUR timeline.

You pay taxes now, at rates you control.

Then that money grows tax-free forever. No RMDs. No forced withdrawals. No tax bomb.

Robert's Alternative Path: The Roth Conversion Strategy

Ages 60-66 (7 years of strategic conversions):

  • Convert $500K-$600K each year

  • Pay $120K-$150K in taxes each year (at 24-32% tax rates)

  • Total taxes Paid over 7 years: $840k-$1.050

Age 73 and beyond:

  • Annual RMDs required: $0 (money's in Roth now)

  • Annual taxes on withdrawals: $0 (Roth withdrawals are tax-free)

Lifetime Tax Comparison:

  • Traditional approach (do nothing): $1.6M-$2M in total taxes

  • Roth conversion strategy: $840K-$1,050K in total taxes

  • Lifetime savings: $760K to $950K

Same $4 million. Different strategy. Seven figures in savings.

Side-by-side comparison infographic of Traditional RMD Approach versus Roth Conversion Strategy showing $1.6M-$2M in taxes with traditional approach versus $840K-$1,050K in taxes with Roth conversion strategy, resulting in $760K-$950K savings

Why This Works: The Three Tax Windows

Many people think about retirement taxes wrong.

They think: "I'll be in a lower bracket when I retire."

That was true 30 years ago. It's not true now.

Here's why:

Window 1: The Pre-RMD Years (Ages 60-72)

After you retire but before RMDs start, you have the lowest income you'll ever have in retirement.

No salary. No RMDs yet. Just Social Security and maybe a pension.

This is your conversion window. Your tax rates are low. You have room in lower brackets.

Window 2: The RMD Years (Ages 73+)

RMDs push you into higher brackets. You have no control.

The government decides how much you withdraw. You just pay the bill.

Window 3: The Widow/Widower Years

Single filer. Same income. Highest brackets.

This is when the tax bomb explodes.

The strategy: Use Window 1 to avoid Windows 2 and 3.

The Numbers Behind the Strategy

Let's look at a real Roth conversion strategy for a $4 million IRA:

Scenario: Couple, both age 62, recently retired

Traditional approach (do nothing):

  • Ages 62-72: No action, IRA grows to $5.2M

  • Age 73: RMDs begin at $189,000/year

  • Lifetime taxes: $1.8M-$2.2M

Roth conversion strategy:

  • Ages 62-68: Convert $600,000/year (7 years)

  • Total converted: $4.2M

  • Taxes paid during conversions: $500,000-$650,000

  • Age 73: RMDs = $0 (everything's in Roth)

  • Lifetime taxes: $500,000-$650,000

Savings: $1.3M to $1.5M

Plus: All future growth is tax-free. No RMDs ever. Better inheritance for kids.

Five Warning Signs You Need a Roth Conversion Strategy

You need to pay attention if:

  1. You have $2M+ in traditional retirement accounts (401k, IRA, 403b)

  2. You're between ages 55-72 (the conversion window)

  3. You're recently retired or planning to retire soon (low-income years ahead)

  4. You don't need all your retirement money to live (can pay conversion taxes from other sources)

  5. You want to leave money to your kids tax-efficiently (Roth IRAs are better inheritances)

If three or more apply, you're leaving seven figures on the table.

The Three Types of Retirement Tax Planning

Many people get one of three approaches from their advisors:

Type 1: The Filer

Your CPA files your taxes. They're good at it. But they're not planning ahead.

They'll tell you about the RMD the year it happens. Too late to fix it.

Type 2: The Portfolio Manager

Your investment advisor grows your account. They're good at it. But they're not thinking about taxes.

They'll celebrate when your IRA hits $5 million. They won't mention the $2 million tax bill coming.

Type 3: The Tax Strategist

Someone who looks at your entire financial picture and plans around the tax code.

They see the RMD train coming. They build the strategy to avoid it.

This is what you need. This is what many people don't have.

Common Objections (And Why They're Wrong)

"But I'll be in a lower tax bracket when I retire"

Maybe. But RMDs might push you right back up.

Plus, tax rates are historically low right now. They're scheduled to increase in 2026.

Converting now locks in today's rates.

"I don't want to pay taxes before I have to"

I get it. Nobody wants to write a check to the IRS.

But would you rather pay $500,000 now or $1.6 million later?

It's not about avoiding taxes. It's about minimizing them.

"My advisor never mentioned this"

That's the problem.

Many advisors aren't CPAs. They don't think about tax strategy.

And many CPAs aren't financial planners. They don't think about long-term planning.

You need both. In the same room. Looking at the same numbers.

"This sounds too good to be true"

It's not magic. It's math.

The tax code allows Roth conversions. The IRS publishes the RMD tables.

We're just using the rules to your advantage instead of the government's.

Roth Conversion Strategy Reality Check

Before you rush to convert everything, here's what you need to know:

This strategy works best if:

  • You can pay conversion taxes from non-retirement accounts

  • You have 5-10 years before you need the money

  • You're in lower tax brackets now than you will be at 73+

  • You want to leave tax-free money to heirs

This strategy might NOT work if:

  • You need every dollar to live on right now

  • You're already taking RMDs (though partial strategies still help)

  • You have very low income in retirement (might not need conversions)

  • You're in poor health with short life expectancy

This isn't one-size-fits-all. It requires actual planning.

What a Roth Conversion Strategy Actually Looks Like

Here's what we do for clients:

Step 1: Run the Numbers

We model your entire retirement tax situation:

  • Current IRA balances

  • Projected growth

  • Future RMDs

  • Tax brackets now vs. later

  • Social Security timing

  • Pension income

Step 2: Design the Conversion Schedule

We create a multi-year plan:

  • How much to convert each year

  • Which accounts to convert from

  • How to pay the taxes

  • When to stop converting

Step 3: Execute Strategically

We coordinate everything:

  • Timing conversions for lowest tax impact

  • Managing estimated tax payments

  • Adjusting for market changes

  • Monitoring tax law changes

Step 4: Monitor and Adjust

We review annually:

  • Are we on track?

  • Do we need to convert more or less?

  • Have tax laws changed?

  • Has your situation changed?

This isn't a one-time transaction. It's a multi-year strategy.

Affluent couple in their early-to-mid 60s discussing Roth conversion for retirement tax planning

Frequently Asked Questions

How does a Roth conversion strategy save money on retirement taxes?

A Roth conversion strategy saves money by allowing you to pay taxes on your retirement accounts during low-income years (typically ages 60-72) at lower tax rates, rather than being forced to take Required Minimum Distributions starting at age 73 when you'll likely be in higher tax brackets. By converting traditional IRA funds to Roth IRAs strategically over several years, you control when and how much tax you pay, potentially saving $1 million or more over your lifetime compared to the traditional RMD approach.

What is the difference between a Roth conversion and regular RMDs?

Regular RMDs (Required Minimum Distributions) are forced withdrawals from traditional retirement accounts starting at age 73, where the government dictates how much you must withdraw and pay taxes on each year. These amounts increase as you age and are taxed as ordinary income. A Roth conversion, by contrast, is a voluntary strategic move where you convert traditional IRA funds to a Roth IRA on YOUR timeline, paying taxes at rates you control. Once converted, that money grows tax-free forever with no future RMDs required.

When is the best time to implement a Roth conversion strategy?

The best time to implement a Roth conversion strategy is during your "low-income window"—typically between retirement and age 72 (before RMDs begin). This is when you no longer have employment income but haven't yet been forced to take RMDs. During these years, you have the most control over your tax bracket and can strategically convert portions of your traditional IRA to fill up lower tax brackets. The earlier you start (ideally ages 60-65), the more time the converted funds have to grow tax-free.

Can I still do Roth conversions if I'm already taking RMDs?

Yes, you can still implement a Roth conversion strategy even after RMDs have begun, though the opportunity is smaller. You must take your RMD first each year (you cannot convert your RMD amount), but you can convert additional funds beyond the RMD. While this won't eliminate your current RMDs, it can reduce future RMDs and the tax burden on your surviving spouse. Partial conversion strategies can still save hundreds of thousands in lifetime taxes, especially if you have 10+ years of life expectancy remaining.

How much should I convert each year in a Roth conversion strategy?

The optimal annual conversion amount depends on your specific tax situation, but generally you want to "fill up" lower tax brackets without pushing yourself into unnecessarily high brackets. For many high-net-worth retirees, converting $500,000-$700,000 annually over 5-7 years works well. The key is to model your entire retirement tax picture—including Social Security, pensions, and investment income—to determine the sweet spot where you're paying reasonable taxes now to avoid much higher taxes later. This requires detailed planning with both a CPA and financial advisor.

What are the tax implications of a Roth conversion strategy?

When you convert traditional IRA funds to a Roth IRA, the converted amount is added to your taxable income for that year and taxed at your ordinary income tax rates. However, once converted, that money grows completely tax-free forever, and you never pay taxes on qualified withdrawals. The strategy works because you're paying taxes during low-income years at lower rates (typically 24-32%) rather than during RMD years at higher rates (35-37% or more). The key is having funds outside your IRA to pay the conversion taxes without reducing the amount converted.

The Window Is Closing

Here's what many people don't realize:

The best time to implement a Roth conversion strategy was 10 years ago.

The second best time is right now.

Every year you wait:

  • Your IRA grows larger (bigger future tax bill)

  • You get closer to RMDs (less time to convert)

  • Tax rates might increase (higher conversion costs)

  • The window gets smaller

If you're between 60 and 72, you're in the sweet spot.

If you're over 72, you can still do partial conversions.

If you're under 60, you have time to plan.

But if you do nothing? The tax bomb is waiting.

What to Do Next

If you have $2 million or more in traditional retirement accounts, you need to see your numbers.

Not generic advice. Not rules of thumb. Your actual situation.

Here's what that looks like:

We'll model your retirement tax situation:

  • Your current IRA balances and projected growth

  • Your future RMDs year by year

  • Your tax brackets now vs. at age 73+

  • Your total lifetime tax bill under the current path

  • Your total lifetime tax bill with a Roth conversion strategy

  • The exact savings in dollars

Then we'll show you:

  • Whether a Roth conversion strategy makes sense for you

  • How much to convert each year

  • When to start and when to stop

  • How to pay the taxes efficiently

  • What your new retirement tax picture looks like

No cost. No obligation. Just the truth about your retirement tax situation.

Book a Possibility Planning Session


We'll spend 45 minutes going through your numbers. You'll walk away knowing exactly what you're on track to pay in taxes—and what you could pay instead.

Most people are shocked when they see the difference.

Don't let $1.6 million disappear because nobody told you there was a better way.


About the Author

Andrew Hall, CPA is the founder of Virtus Financial Group, a financial planning firm specializing in retirement and tax planning strategies for high-net-worth individuals. With over 20 years of experience as both a CPA and financial advisor, Andrew helps clients navigate the complex intersection of retirement planning and tax strategy to maximize wealth preservation and minimize lifetime tax burdens.

As a CPA and financial advisor, I’ve helped thousands of people ‘Retire Well’. Retirement should be the time when you can finally relax and enjoy yourself.

Andrew Hall

As a CPA and financial advisor, I’ve helped thousands of people ‘Retire Well’. Retirement should be the time when you can finally relax and enjoy yourself.

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