When a Roth Conversion Is a Mistake: Tax-Smart Alternatives
Written by John Macy, Financial Coach, MBA, Retirement Income Certified Professional® (RICP)
Introduction
Suppose you've built significant wealth in tax-deferred retirement accounts such as Traditional 401(k) and IRAs. With potentially large Required Minimum Distributions looming in the future, the big question is whether you should convert most of the tax-deferred balance to a Roth, pay taxes now, and avoid potentially higher taxes later?
For many households, the answer is that there are other solutions and converting funds to a Roth IRA or 401(k) at a high tax rate might be a mistake. Sometimes converting to a Roth at a low tax rate can still be a mistake.
New to Roth conversions? Start with the Guiding Principles.
A Quick Reminder: When Conversions Tend to Work
Roth conversions tend to work best in a temporary low-income year, such as the early retirement years before Social Security and RMDs begin. For the full principles and timing, see When Should You Do a Roth Conversion? 5 Guiding Principles.
When Conversions May Not Fit
Roth conversions rarely make sense if you expect to stay in a low tax bracket, or if you would pay a higher rate on the conversion than you or your heirs would pay on future withdrawals (sometimes called "negative tax arbitrage"). The Guiding Principles post explains the math.
One thing to keep in mind is that Roth conversions can raise your effective tax rate well above your regular tax bracket. This is because Roth conversions create ordinary income that can also raise your Medicare premiums (IRMAA), make more of your Social Security taxable, reduce ACA subsidies, and trigger the 3.8% Net Investment Income Tax. These are summarized below and covered in more detail in the Complications section of the Guiding Principles post.
Person / Scenario | Why Roth Conversions Fail |
Pre-65 Retirees in 22% or higher tax brackets | May trigger loss of ACA/Obamacare health insurance subsidies. May also trigger Medicare IRMAA surcharges if age 63+. |
Charitably Inclined | IRAs are better used for Qualified Charitable Distributions (QCDs), which eliminate the tax entirely. |
Heirs in low tax brackets | If your children or grandchildren will be in a lower tax bracket than you, it is more tax-efficient for them to inherit the remaining IRA and pay taxes at a lower rate later. |
Tax-Smart Alternatives for Charitably Inclined Readers
If you're in a 22% or higher tax bracket, conversions cost more, which makes alternatives more attractive. Here are some strategies that may be a better fit for those who are charitably inclined:
1. Qualified Charitable Distributions (QCDs) vs. Roth Conversions
Starting at age 70½, you can give directly from your IRA to charity. The 2026 QCD limit is $111,000 per person. Note: QCDs can only come from an IRA (not directly from a 401(k)), and they can't go to a donor-advised fund.
QCDs can be quite useful because they:
Satisfy all or part of your Required Minimum Distribution (RMD).
Reduce your taxable income, which can also lower your Medicare premiums.
Put your money directly to work for a cause you care about.
A Roth conversion reduces future RMDs by paying taxes today at your current tax rate; a QCD reduces current and future RMDs, paying zero taxes ever on those amounts given to charity.
Example: A 75-year-old couple with $2M in traditional IRAs has a required $81K RMD. If they don’t need all of the RMD to fund their expenses, by donating $50K to charities via QCDs, they cut their taxable RMD by over 60% while making a big impact. They can repeat this process multiple years to avoid taxes and benefit the causes they care about.
2. Charitable Bequests
You can leave part or all of your traditional IRA to charity through beneficiary designations. This is very tax-efficient because charities are tax-exempt and won't pay the income tax your heirs would face.
Example: Instead of leaving a $1M IRA to your children (who could lose 30–50% in taxes), leave some or all of the IRA to a charity. Then, give your heirs Roth IRAs, real estate, and taxable brokerage assets that receive a step-up in cost basis at your death. The result: more impact for charity and a more efficient inheritance for your family.
3. The Tax-Offset Strategy: DAF + Roth Conversion Combo
This is a slightly more sophisticated strategy for higher-income, higher-net-worth households primarily before age 70½.
Bunching multiple years of charitable donations into one tax year (combined with state and local taxes and mortgage interest) can result in a large itemized deduction. One way to do this is to contribute a large amount of appreciated stock (or cash) from a taxable brokerage account to a Donor-Advised Fund (DAF) in a high-income year. You can then use the large itemized deduction to offset potential taxes from a significant Roth conversion.
Example: A 60-year-old couple in a 24% or higher tax bracket contributes $100K of stock to a DAF. If we assume they pay $20K in state/local income taxes, $12K in real estate taxes, and $10K in mortgage interest, they will have approximately $141K in itemized deductions that is about $109K more than the standard deduction.* They can then convert about $109K of Traditional IRA money to a Roth, using the itemized deduction to shield that conversion from tax.
By repeating this strategy over several years, you can shift a significant amount of wealth into a tax-free Roth with minimal tax pain, while fulfilling your charitable desires.
* Itemized deductions include charitable contributions plus state/local taxes, mortgage interest, medical expenses in excess of 7.5% of AGI. There are income-based limits to this strategy depending on whether the contribution was in appreciated assets or cash. Also note that the IRA conversion may trigger the 3.8% Net Investment Income Tax on some of the converted funds. Check with your tax professional to understand how the tax code nuances will affect your specific situation.
The Roth Conversion Decision Tree
1. Is your current tax bracket significantly LOWER than your expected future retirement bracket?
NO: You are likely committing "Negative Tax Arbitrage." (Exception: Estate planning for high-net-worth heirs). Probably not worth converting to Roth.
YES: Proceed to Question 2.
2. Are you under age 65 and relying on ACA (Obamacare) subsidies?
YES: CAUTION. A conversion could trigger a "Subsidy Cliff," making your healthcare significantly more expensive.
NO: Proceed to Question 3.
3. Are you charitably inclined?
YES: Consider QCDs or Charitable Bequests. These allow you to reduce your IRA balance and satisfy RMDs with zero tax, which can be more tax efficient than a Roth conversion for the charitable portion of your wealth. Alternatively, consider gifts to Donor Advised Funds combined with Roth conversions.
NO: Proceed to Question 4.
4. Do you have enough "outside" cash (in a brokerage or savings account) to pay the conversion tax?
NO: Conversions might still make sense, but proceed with caution. Using IRA funds to pay the tax on the conversion reduces the benefit and may trigger early withdrawal penalties (if you are under 59½).
YES: This is typically a favorable setup for a Roth conversion.
The Bottom Line
If you are in a higher bracket and charitably inclined, QCDs, charitable bequests, or the DAF plus Roth combination may be worth considering, in place of or alongside conversions to maximize your impact and minimize your tax burden.
Key Takeaway: The goal is to maximize after-tax wealth, not just minimize RMDs. Prepaying a 24% tax today to avoid a 12% tax later is a net loss for your household.
At FlourishingPath Financial Coaching, I help you understand the options that align with your values and build a future you are excited about. Learn how to use Qualified Charitable Distributions (QCDs) as a tax-free alternative to Roth conversions in this article: "QCDs: The Tax-Smart Way to Give".
Want Help Thinking Through Your Roth Conversion Strategy? |
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This post is for general education and is not tax or investment advice. Please consult a qualified professional to determine what is appropriate for your specific situation.
Author: John Macy, MBA, RICP®
John Macy is a professional financial coach and the founder of FlourishingPath Financial Coaching. With over six years of experience as a financial coach, John helps pre-retirees and retirees design resilient portfolios and income streams for their next act. Read his full story here.
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