The Roth IRA has a near-mythical reputation among retirement savers. Pay taxes upfront, let the account grow, and walk away decades later without owing another dollar to the IRS. That last piece is the appeal, and it’s also where most investors get tripped up.
Qualified withdrawals from a Roth IRA really are federally tax-free, but the word “qualified” does heavy lifting. Miss a detail on any one of several overlapping IRS rules and you can end up owing ordinary income tax, a 10% early withdrawal penalty, an inflated Medicare bill, or some combination of the three. Fidelity has flagged the Roth five-year rule as one of the most misunderstood features in the US retirement code, and the 260-page final regulations the IRS released on inherited accounts in July 2024 did little to simplify things.
Here are five places where the “tax-free” label quietly breaks down, and what retail investors can do about each one.
The Earnings Five-Year Rule Most Savers Don’t Track
Contributions to a Roth IRA can be withdrawn at any time, at any age, tax-free and penalty-free, because that money was already taxed. Earnings are a different story. To withdraw investment gains tax-free, the account holder has to be at least 59½ and must have held any Roth IRA for at least five tax years, counted from January 1 of the year of the first contribution.
That second requirement trips up late starters. A 62-year-old who opens their first Roth in 2026 still has to wait until January 2031 before earnings become qualified, even though they are already past the age threshold. Pull earnings before then and they get taxed as ordinary income. The practical workaround is that the IRS treats Roth withdrawals in a specific order (contributions first, then conversions, then earnings), so someone who only touches the contribution layer stays clean.
Every Roth Conversion Starts Its Own Five-Year Clock
Backdoor Roth strategies have exploded in popularity among higher earners, and so has confusion around the second, separate five-year rule governing conversions. Every individual conversion starts its own holding period, measured from January 1 of the conversion year. Pull the converted principal out before that clock expires and before age 59½, and a 10% early withdrawal penalty applies to the converted amount, not just the earnings.
Charles Schwab (NYSE:SCHW) walks through a representative example. A 55-year-old who converts $10,000 in 2026 and withdraws $6,000 two years later owes the 10% penalty on the full withdrawn amount because the five-year conversion clock has not expired. The penalty hits even though taxes were already paid on that money at the time of conversion. Anyone running a multi-year Roth conversion ladder needs to track each year’s conversion separately on IRS Form 8606.
Roth Conversions Quietly Inflate Your Medicare Bill
This one surprises almost everyone. A Roth conversion is a taxable event in the year it happens, and the converted amount lands in your modified adjusted gross income (MAGI). MAGI drives the Income-Related Monthly Adjustment Amount (IRMAA) surcharge on Medicare Part B and Part D premiums.
For 2026, IRMAA surcharges begin at $109,000 MAGI for single filers and $218,000 for married couples filing jointly, according to CMS bracket tables. IRMAA operates as a cliff rather than a gradient, so crossing a threshold by a single dollar can cost a couple more than $2,300 a year in added premiums. Because IRMAA uses a two-year lookback, a large conversion in 2026 hits Medicare premiums in 2028. Retirees planning aggressive conversions in their early 60s often fare better by laddering smaller conversions across multiple years rather than front-loading a single big one.
Inherited Roth IRAs Come With A 10-Year Countdown
The Roth’s “no lifetime required minimum distributions” feature is real for the original account holder, but it evaporates for most heirs. Under the SECURE Act, most non-spouse beneficiaries who inherit a Roth after 2019 must empty the account by December 31 of the tenth year following the original owner’s death. Miss the deadline and the remaining balance faces a 25% excise tax, which can drop to 10% if corrected promptly.
The IRS finalized these regulations in July 2024, and the grace period that waived annual RMDs during the 10-year window expired at the end of 2024. Distributions from a qualifying inherited Roth generally stay tax-free, but the forced 10-year liquidation strips away much of the compounding runway that made the account so valuable in the first place. Surviving spouses retain more flexibility and can usually roll the inherited account into their own Roth, sidestepping the 10-year rule entirely.
State Tax Quirks Can Still Catch You
Federal law sets the headline tax treatment, but state rules do not always line up. A majority of states follow the federal treatment on Roth IRAs, yet a handful have historically diverged on conversions, distributions, or the mechanics of when income is recognized. Investors who convert in one state and plan to withdraw after relocating to another should check the rules in both jurisdictions before pulling the trigger. The same logic applies to retirees considering a move to a state that taxes retirement income differently than the one they currently live in, since a decision that looked tax-neutral at the federal level can still generate a state tax bill.
The Bottom Line For Retirees And Savers
Roth IRAs still deserve their place in most long-term plans. The tax drag of a traditional account during retirement, combined with rising life expectancies and uncertain future tax rates, keeps the Roth compelling. What changes once the rules are fully understood is the strategy around it. Laddering conversions, tracking each five-year clock separately, and projecting MAGI two years forward before executing a large conversion are what separate a genuinely tax-free retirement from an unwelcome surprise courtesy of the IRS or Medicare. Read the fine print, and the Roth holds up. Skip it, and “tax-free” becomes a much softer promise.
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Benzinga Disclaimer: This article is from an unpaid external contributor. It does not represent Benzinga’s reporting and has not been edited for content or accuracy.
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