For retirees and pre-retirees across High Point, Greensboro, Winston-Salem, and Jamestown, the more useful question is usually not whether a conversion is allowed but whether the timing and size fit the rest of the plan. This guide covers how a Roth conversion in retirement works, the rules worth understanding first, and the trade-offs to weigh with a tax professional.
Can you do a Roth conversion after retirement?
Generally, yes. There is no upper age limit on Roth conversions, and retirement itself does not disqualify you. As long as you hold a traditional IRA, an old 401(k), or another pre-tax retirement account, you can generally convert some or all of it to a Roth IRA. The pre-tax portion you convert is generally added to that year's income. (Source: IRS Publication 590-B)
This surprises some people because they are thinking of a different rule. Before 2020, traditional IRA contributions had to stop at age 70½. The SECURE Act removed that age cap on contributions, and a conversion was never subject to it, because a conversion moves existing money rather than adding new money. (Source: IRS Publication 590-A)
In practice, someone in their late sixties or seventies, or someone already taking required minimum distributions (RMDs), can still convert. The RMD for the year must be withdrawn first because it is not eligible to be rolled over, but amounts above it generally remain eligible. (Source: IRS RMD FAQs)
When might a Roth conversion in retirement be worth modeling?
There is no single right answer. A few recurring situations are where a Roth conversion in retirement tends to get a closer look.
- The gap years. The stretch between the last paycheck and the first RMD is often one of the lower-income periods of a retiree's life, which may make it a comparatively inexpensive time to recognize income on purpose. Our article on Roth conversions before RMDs begin looks at that timing question in detail.
- Before Social Security starts. The years before benefits begin are also years without that additional income layered on top, though the effect varies by household.
- Lower-income years generally. A year with reduced investment income, a paid-off mortgage, or a temporary dip in other income could open room in a lower bracket that might otherwise go unused.
- Market downturns. When account values are down, the same holdings convert at a lower taxable value, since tax is owed on the value converted. A conversion does not protect against further declines, and the tax cannot be undone. (Source: IRS Publication 590-B)
- Estate planning goals. Qualified distributions from a Roth IRA are generally income-tax-free to heirs, although most non-spouse beneficiaries must empty an inherited account within ten years. (Source: IRS RMD FAQs)
A Roth conversion is a taxable event and cannot be reversed, so any possible benefit comes with a real cost today. None of these situations means a conversion is the right move for a given household. Each one simply describes a condition where the tax math may be worth running.
How do tax brackets affect a Roth conversion?
A Roth conversion is taxed as ordinary income in the year it happens. The converted amount is added to your other taxable income and taxed at your marginal rate, the same way an extra withdrawal would be. (Source: IRS Publication 590-B)
That is why bracket management is usually at the center of the decision. A common approach is described as filling up a bracket: converting enough to use the remaining room in a chosen bracket, such as the 12% or 22% federal bracket, without pushing the additional income into the next one. The bracket thresholds are adjusted for inflation each year and are set by law that Congress can change. (Source: IRS 2026 tax inflation adjustments)
Bracket math is not the only thing a larger conversion can change. A conversion also raises modified adjusted gross income (MAGI), which can affect Medicare premiums and how much of a Social Security benefit is taxed, as covered below. A bigger conversion is not automatically wrong, but its size is worth modeling in advance rather than choosing a number that simply feels right.
How does a Roth conversion affect Medicare premiums?
It can. Medicare Part B and Part D premiums include an income-related monthly adjustment amount (IRMAA) for higher earners. The Social Security Administration sets IRMAA using the federal tax return from two years earlier, so a conversion made this year could raise premiums two years from now. (Source: SSA Medicare premiums)
For 2026 premiums, SSA lists the first surcharge tier at a MAGI above $109,000 for single filers and above $218,000 for joint filers. (Source: SSA Medicare premiums, with premium amounts in the CMS 2026 premiums fact sheet) These thresholds change, so confirm current figures before relying on them.
Because of the two-year lookback, a conversion made at 63 may affect the premiums you pay when Medicare coverage begins at 65. Spreading a conversion across several years, or sizing it to stay under a threshold, is one way households try to manage that effect, and it may involve trade-offs elsewhere in the plan.
How does the five-year rule work for Roth conversions?
Roth IRAs carry more than one five-year rule, and retirees converting later in life should understand both. (Source: IRS Publication 590-B)
The first is the conversion-specific rule. Each conversion has its own five-year period. If you withdraw converted amounts within that period and you are under 59½, the taxable portion of what you converted may be subject to the 10% additional tax, unless an exception applies. The conversion itself is not penalized, and the amount was taxed when it was converted.
For anyone already 59½ or older, which describes many people converting in retirement, that 10% additional tax generally does not apply to converted amounts, however recently the conversion happened.
A separate five-year rule governs whether earnings can be withdrawn tax-free. A distribution is qualified when it is made after the five-year period that begins with the first tax year for which a contribution was made to any Roth IRA, and when you are at least 59½ or meet another qualifying condition. Someone who opens their first Roth IRA through a late-in-life conversion may still be inside that period.
What happens to RMDs after a Roth conversion?
Four points shape the answer:
- The RMD comes first. An RMD for a given year cannot be rolled over, so it cannot be converted. Only amounts above the RMD may be considered for conversion. (Source: IRS RMD FAQs)
- Roth IRAs have no RMDs during the original owner's lifetime. Money converted to a Roth IRA is no longer subject to the owner's RMD rules. (Source: IRS RMD FAQs)
- Future RMDs may be smaller. An RMD is calculated from the prior December 31 balance of each pre-tax account, so a smaller pre-tax balance could mean smaller required distributions later. The conversion itself adds taxable income in the year it happens, so the trade-off is worth modeling. (Source: IRS RMD FAQs)
- The starting age depends on your birth year. RMDs generally begin at 73 for people born from 1951 through 1959 and at 75 for people born in 1960 or later. (Sources: IRS required minimum distributions and Congressional Research Service)
Our RMD guide for retirees walks through the birth-year table and the Uniform Lifetime Table in more detail.
How do Roth conversions fit with Social Security?
A conversion adds to MAGI, and MAGI helps determine how much of a Social Security benefit is taxable. Depending on other income, up to 85% of a benefit can become taxable, and the interaction is not linear. (Source: IRS Publication 915)
That is why the claiming decision and the conversion decision are often modeled together. A conversion in a year before benefits start does not affect benefit taxation that year, but the same conversion in a year when benefits are being paid may. The right sequence depends on each household's income, filing status, and goals.
How can a Roth conversion calculator help?
So much of this decision depends on your own numbers, including your current bracket, the size of your pre-tax balance, your expected RMDs, and when you plan to claim Social Security, that a general explanation only goes so far.
Our Roth conversion calculator lets you compare converting a hypothetical amount with leaving the balance untouched, using the tax rate and time horizon assumptions you choose. It produces an educational estimate, not tax advice, and the result depends entirely on the assumptions you enter. It does not know your full tax return.
Is a Roth conversion right for your retirement plan?
A Roth conversion in retirement is one piece of a larger financial plan, and it tends to work best when it is coordinated with your other income sources, your tax return, and your long-term goals rather than decided on its own. Our financial planning, tax planning, and retirement income services are built to look at those pieces together.
If you are weighing a Roth conversion in retirement and want to see how it interacts with your Social Security timing, RMD schedule, and overall plan, Will Armfield, AAMS®, CRPC®, and the team at Armfield Wealth work with retirees and pre-retirees across the Piedmont Triad, including High Point, Greensboro, Winston-Salem, and Jamestown, on this kind of question. You can set up a 30-minute conversation on our scheduling page to talk through your situation before making a decision.
This article is educational content and general information. It is not individualized tax or investment advice and does not account for your specific circumstances. Roth conversions are taxable events and cannot be undone, and tax rules, thresholds, and RMD ages are subject to change. Consult a qualified tax professional and a financial advisor before making decisions about converting retirement savings.
This article is general information, not individualized investment, tax, or legal advice, and it does not account for your circumstances. Tax rules referenced are those in effect at the date shown and change over time. Consult a qualified professional before acting.