If you’ve spent any time in the Texas Hill Country lately: maybe enjoying a glass of wine in Fredericksburg or a quiet morning in Boerne: you’ve likely heard the chatter about Roth conversions. For many retirees and those approaching the finish line of their careers, the appeal is obvious: pay taxes now to enjoy tax-free growth and tax-free withdrawals later.
But as the calendar inches closer to 2026, the strategy behind these conversions is becoming more critical. With the current tax landscape potentially shifting and the sunset of certain tax provisions on the horizon, a Roth conversion can be a powerful tool: or a very expensive mistake.
At Portafolio Capital, we see ourselves as more than just money managers. We are your partner in "retirement transformation." That means looking beyond the ticker symbols and focusing on how your portfolio risk aligns with your actual life goals.
Here are the seven most common mistakes we see people make with their Roth conversion strategies and, more importantly, how a specialized Retirement Planner can help you fix them.
1. The "All-at-Once" Bracket Creep
The most common mistake is trying to "get it over with." We see retirees who decide to convert their entire traditional IRA into a Roth in a single tax year. While the intention of getting the tax bill out of the way is noble, the execution is often disastrous.
When you convert a large sum all at once, you effectively pile that entire amount on top of your existing income for the year. This can catapult you into the highest possible tax brackets. Instead of paying a modest 12% or 22%, you might find yourself handing over 37% of your hard-earned savings to Uncle Sam.
The Fix: Use a "bracket-filling" strategy. A fiduciary advisor can help you identify exactly how much "room" you have left in your current tax bracket. By spreading the conversion over several years, you can stay in a lower tax environment and keep more of your wealth working for you.
2. Ignoring the Medicare IRMAA Trap
Many retirees focus solely on federal income tax and completely overlook how a Roth conversion affects their Medicare premiums. This is known as the Income-Related Monthly Adjustment Amount (IRMAA).
Because a Roth conversion increases your Modified Adjusted Gross Income (MAGI), it can trigger "cliffs" that significantly increase your Medicare Part B and Part D premiums. Even being $1 over a threshold can result in thousands of dollars in extra costs for a couple. Since Medicare uses a two-year look-back period, a conversion mistake made today could haunt your bank account two years from now.
The Fix: Don’t plan in a vacuum. Coordinate your conversion amounts with your Medicare brackets. A skilled Retirement Planner understands these nuances and can model how a conversion impacts your total out-of-pocket costs, not just your tax return.
3. Paying the Tax Bill with Retirement Dollars
If you have a $100,000 IRA and you convert it to a Roth, you owe taxes on that $100,000. A frequent error is "withholding" the taxes directly from the IRA during the conversion.
Why is this a mistake? First, if you are under age 59½, that withholding might be considered an early distribution, triggering a 10% penalty. Second, you are shrinking the "seed" in your tax-free garden. By using IRA funds to pay the tax, you have less money compounding tax-free inside the Roth.
The Fix: Whenever possible, pay the tax bill using cash from a non-retirement brokerage account or savings. This allows your entire IRA balance to move into the Roth and grow unencumbered by future taxes.
4. Waiting Until the "Golden Window" Closes
The "Golden Window" for Roth conversions is typically the period between your retirement and the age when Required Minimum Distributions (RMDs) begin. During these years, your income is often at its lowest point in decades, providing a perfect opportunity to convert at low tax rates.
Waiting until RMDs start is a major strategic blunder. Once RMDs begin, you are required to take that money out and pay taxes on it first. You cannot convert an RMD to a Roth. This forced income often pushes you into higher brackets, leaving you with very little "room" to do a meaningful conversion.
The Fix: Start early. Even if you aren't ready to convert the whole portfolio, utilizing those early retirement years to "chip away" at your traditional IRA balance can drastically reduce the size of your future RMDs and lower your lifetime tax bill.
5. Falling Victim to the Pro-Rata Rule
We often hear from people who want to do a "Backdoor Roth" conversion because their income is too high for a direct contribution. They contribute after-tax money to a traditional IRA and immediately convert it, thinking it will be tax-free.
However, if you have any other traditional IRAs (including SEP or SIMPLE IRAs), the IRS applies the "pro-rata rule." They look at all your IRA accounts as one giant bucket. You can't just choose to convert the "after-tax" portion. You must convert a proportional amount of your pre-tax and after-tax dollars.
The Fix: Before attempting a conversion, an advisor should review your entire IRA landscape. There are strategic ways to handle this, such as rolling pre-tax IRA funds into a current 401(k) if your plan allows it, which "clears the deck" for a cleaner conversion.
6. Overlooking the 5-Year Rule
A Roth IRA is a long-term play. One of the most misunderstood aspects of conversions is the 5-year rule. Specifically, each conversion you make has its own 5-year "waiting period" before you can withdraw the converted principal penalty-free if you are under age 59½.
Even if you are over 59½, if you have never owned a Roth IRA before, there is a separate 5-year clock for withdrawing earnings tax-free.
The Fix: Ensure you have enough liquidity in your taxable accounts to cover your lifestyle for at least five years before tapping into converted Roth funds. Our focus at Portafolio Capital is on portfolio liquidity and transparency, ensuring you never have to sell assets at the wrong time just to pay for your life.
7. Not Coordinating with Social Security
When you perform a Roth conversion, you are intentionally increasing your income. If you are already collecting Social Security, this "extra" income can trigger a phenomenon where a larger portion of your Social Security benefits becomes taxable.
This is often referred to as the "Tax Torpedo." For every dollar you convert, you might not only be paying tax on that dollar but also pushing more of your Social Security into the taxable column, effectively creating a much higher marginal tax rate than you anticipated.
The Fix: Coordinate the timing. In some cases, it may make sense to delay Social Security while you aggressively convert your IRA. This not only allows for lower-tax conversions but also increases your eventual Social Security benefit.
Why a Fiduciary Registered Investment Adviser Matters
Navigating the complexities of Roth conversions requires more than just a calculator; it requires a comprehensive understanding of your entire financial picture. This is where the value of a fiduciary Registered Investment Adviser (RIA) becomes clear.
Unlike firms that might push "cookie-cutter" products, a fiduciary is legally obligated to act in your best interest. At Portafolio Capital Management dba Mau Sanchez Capital, we focus on:
- Risk Modeling: We don't just "invest." We align your portfolio risk with your specific retirement goals. If a Roth conversion is right for you, we ensure your asset allocation supports that long-term vision.
- Strategic Positioning: We believe in the power of publicly traded markets and long-term equity ownership. We avoid complex, illiquid products that often carry hidden fees and unnecessary risk.
- Personalized Attention: We serve families who have worked hard to accumulate wealth and want a partner to help them protect and grow it.
As a firm, we prioritize liquidity and cost-efficiency. We don't invest in TIPS or REITs, as we believe there are more transparent and effective ways to manage a retirement portfolio for the long haul.
"The goal of retirement planning is not just to have enough money, but to have enough of the right kind of money: money that isn't at the mercy of future tax hikes."
Ready to reclaim control of your investments and ensure your Roth strategy is sound?
Schedule a call with a fiduciary financial advisor today: https://calendly.com/portafoliocapital/15min
Or give us a call at (512) 593-8380 to learn more about how we can help you transform your retirement planning.
Portafolio Capital Management dba Mau Sanchez Capital is a Registered Investment Adviser. This content is for informational purposes only and does not constitute investment advice or a solicitation to buy or sell any security. Advisory services are provided only pursuant to a written advisory agreement.
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