Key Takeaways
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A Roth IRA conversion can be a powerful tax strategy, but the timing, income level, and withdrawal plan must be aligned to avoid unnecessary costs.
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Many public sector employees fall into avoidable traps that can reduce the long-term value of converting pre-tax funds into a Roth account.
Why Roth IRA Conversions Are Popular in 2025
As a government employee, your retirement income may come from a combination of FERS annuity payments, Social Security
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A Roth IRA allows tax-free withdrawals in retirement, making it a tempting option for those who want to limit taxable income later in life. Converting traditional retirement funds to a Roth account involves paying taxes on the converted amount now in exchange for future tax-free growth. But if you don’t approach the process with careful planning, you could end up accelerating your tax bill without maximizing the benefits.
1. Misjudging Your Tax Bracket in the Year of Conversion
One of the most common mistakes is failing to calculate how the conversion will impact your current year’s tax bracket. Roth conversions are treated as ordinary income, which means the entire converted amount is added to your taxable income in the year of conversion.
In 2025, federal income tax brackets remain progressive, so even a moderate conversion can push you into a higher bracket:
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If you’re in the 22% bracket and your conversion pushes you into the 24% or 32% bracket, the extra tax you owe can negate the long-term benefits of the strategy.
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Many public sector employees underestimate their existing income sources—including spousal earnings, pensions, and investment income.
What to do: Work with a licensed tax professional to project your total income before initiating a Roth conversion. Consider breaking up conversions over multiple years to stay within your current bracket.
2. Ignoring Required Minimum Distributions (RMDs)
If you’re 73 or older in 2025, you’re already required to take RMDs from your traditional TSP and IRA accounts. You can’t convert RMDs into a Roth IRA.
This means:
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You must take your full RMD for the year before converting any remaining funds.
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The RMD itself is taxed as income and can inflate your total income, making your Roth conversion more expensive from a tax standpoint.
What to do: Begin evaluating Roth conversions well before reaching RMD age. Ideally, consider partial conversions in your 60s—especially between retirement and age 73—when your income may be temporarily lower.
3. Overlooking Medicare IRMAA Impacts
Income from Roth conversions can push you into higher Medicare premium brackets due to the Income-Related Monthly Adjustment Amount (IRMAA).
In 2025, IRMAA surcharges apply to individuals with modified adjusted gross incomes (MAGI) over $106,000 and couples over $212,000. These thresholds are based on income from two years prior.
So, if your conversion in 2025 inflates your MAGI to $115,000, you could be subject to higher Medicare Part B and Part D premiums in 2027.
What to do: Forecast your MAGI carefully. If you’re close to the IRMAA thresholds, consider converting a smaller amount or spacing it out across years to avoid costly premium increases.
4. Using Converted Funds to Pay the Tax
If you use money from the Roth conversion itself to pay the resulting tax bill, you undercut the future compounding value of the converted funds. Worse, if you’re under 59½, the IRS may apply a 10% penalty on the withdrawn amount.
Why it matters:
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You lose tax-free growth on the withdrawn portion.
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You reduce the overall size of your Roth IRA.
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You may face early withdrawal penalties.
What to do: Always plan to pay the conversion tax with funds from outside your retirement accounts. This ensures the full converted amount continues to grow tax-free.
5. Not Having a Clear Withdrawal Strategy
A Roth conversion without a long-term withdrawal plan is like installing solar panels without checking your home’s energy usage. It may sound smart, but the return depends on how and when you tap into the funds.
Some retirees convert large sums to a Roth only to realize later they don’t need those funds for decades. While tax-free growth is valuable, the upfront cost of the conversion may not pay off unless those funds are actually used.
What to do: Match your Roth conversion plan with your expected retirement spending. If you’re unlikely to withdraw the funds within 10-20 years, the long-term tax-free growth may justify the conversion. But if you need short-term income, converting might not yield a net benefit.
6. Timing Conversions Without Considering Market Conditions
Market fluctuations can significantly influence the strategic value of a Roth conversion. Converting when markets are down allows you to pay taxes on a temporarily depressed account value—and then benefit from a potential rebound inside a tax-free account.
For example: A $50,000 IRA that drops to $40,000 during a downturn offers a unique opportunity: convert at $40,000, pay taxes on that lower amount, and if it grows back to $50,000 or more in the Roth, you’ve essentially captured the rebound tax-free.
What to do: Watch market trends and consider converting during dips. While market timing shouldn’t be the only factor, it can significantly enhance the benefit of a conversion when paired with a well-planned strategy.
7. Disregarding the Impact on State Taxes
While Roth conversions are taxed federally, some states also tax retirement income. Depending on your state, a Roth conversion could trigger additional tax liability.
Important to consider:
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Some states tax all retirement income, while others exclude it.
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Your residency status in retirement affects long-term tax treatment.
What to do: Factor in your current and anticipated retirement location. If you plan to move to a tax-friendly state within a few years, it may be worth delaying the conversion until you relocate.
8. Assuming Conversions Are a One-Time Event
Many public sector retirees treat Roth conversions as a one-and-done move. But in reality, a gradual approach often yields better outcomes.
In 2025, you still have time to execute multi-year partial conversions, especially if you retired early or have a temporary dip in taxable income.
Why gradual conversions make sense:
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They allow you to stay in lower tax brackets.
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They give flexibility to respond to changes in income, tax law, or health.
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They reduce the risk of IRMAA surcharges or other tax cliffs.
What to do: Consider a conversion ladder—converting small, controlled amounts each year between retirement and age 73.
9. Failing to Coordinate With TSP and Pension Income
Your Roth conversion strategy shouldn’t exist in a vacuum. FERS pension payments and TSP withdrawals can significantly affect your tax bracket. If you start converting just as your pension or annuity kicks in, you may find yourself in a much higher income range than expected.
Key tip:
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FERS annuities are taxable.
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TSP withdrawals (from traditional accounts) are also fully taxable.
What to do: Identify the low-income windows—typically between your retirement date and when your pension, Social Security, or RMDs begin. Those are your best opportunities to complete Roth conversions with lower tax impact.
10. Forgetting the Five-Year Rule
The Roth IRA five-year rule is often misunderstood. Each conversion has its own five-year clock before the earnings on the converted amount can be withdrawn tax-free.
In 2025, this rule matters if:
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You plan to use Roth funds within five years of converting.
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You are under age 59½ and withdraw funds early, triggering penalties.
What to do: Keep detailed records of each Roth conversion and the associated five-year clock. Avoid drawing from those funds prematurely.
Strategic Planning Is the Key to Getting It Right
Roth IRA conversions can be an excellent tool in your retirement strategy—but only if used wisely and aligned with your complete financial picture. You have many moving parts to balance: tax brackets, income timing, Medicare premiums, and required distributions.
If you’re unsure how to map out your ideal conversion timeline, consider speaking with a licensed agent listed on this website. A professional can walk you through multi-year projections and help you determine whether, when, and how much to convert.
