Every year, more savers ask their advisors the same question: does it make sense to move traditional retirement money into a Roth account? An IRA rollover to Roth can be a smart tax-planning move for some people and a costly mistake for others, depending on income, timing, and long-term goals. As tax brackets, contribution rules, and Roth-related regulations shift heading into 2026, retirement planners are fielding more detailed questions than ever. This FAQ-style guide walks through the questions that come up most often, so you can have clearer, more confident conversations with clients.

What Is an IRA Rollover to Roth, Exactly?

An IRA rollover to Roth typically refers to moving money from a pre-tax retirement account, such as a traditional IRA or an old 401(k), into a Roth IRA. Because Roth accounts are funded with after-tax dollars, the amount you move is generally added to your taxable income for the year, and you pay ordinary income tax on that amount now instead of when you eventually withdraw the funds. In practice, many people use the terms “rollover” and “conversion” interchangeably when discussing this strategy, but there’s a technical difference worth mentioning to clients.

Rollover vs. Conversion: Is There a Difference?

A rollover usually describes moving funds between accounts of the same tax treatment, like shifting a 401(k) into a traditional IRA. A conversion specifically describes changing the tax character of the money, such as moving pre-tax funds into a Roth. When people talk about an IRA rollover to Roth, they almost always mean a Roth conversion, whether the money is coming from a traditional IRA, a SEP IRA, or a former employer’s retirement plan. Using precise language with clients can prevent confusion later, especially at tax time.

Frequently Asked Questions About IRA Rollover to Roth Strategies

1. How is the tax bill calculated?

The taxable amount is generally the pre-tax portion of whatever you move. If someone converts $60,000 from a traditional IRA that has no after-tax contributions, that entire $60,000 is typically added to their taxable income for the year. If the account includes nondeductible contributions, only the pre-tax portion is usually taxable, and the pro-rata rule across all traditional IRAs often applies. This is one of the more misunderstood aspects of an IRA rollover to Roth, so it’s worth reviewing account history carefully before filing.

2. Are there income limits for doing this?

Unlike direct Roth IRA contributions, which phase out at higher income levels, converting existing IRA funds to a Roth generally has no income cap. This is why the strategy sometimes gets called a “backdoor” approach for high earners who can’t contribute to a Roth directly but can still complete an IRA rollover to Roth through conversion.

3. What is the five-year rule, and does it apply here?

Roth accounts come with more than one five-year clock, which trips people up constantly. One clock determines when earnings can be withdrawn tax-free. A separate five-year rule applies to each conversion, determining when converted amounts can be withdrawn without a penalty if you’re under 59½. If a client converts funds in 2026 and needs to access that money in 2028, they may face a penalty on the converted principal even though it was already taxed. Planners should walk clients through both timelines separately, since assuming one covers the other is a common error.

4. Can a Roth conversion be reversed?

At one point, taxpayers could “recharacterize” a Roth conversion, essentially undoing it if the account lost value or if the tax bill turned out to be unaffordable. That option was eliminated for conversions several years ago and remains unavailable in 2026. This makes the decision to complete an IRA rollover to Roth less flexible than it used to be, so getting the numbers right beforehand matters more than it once did.

5. Does converting affect Required Minimum Distributions (RMDs)?

Roth IRAs are not subject to RMDs during the original owner’s lifetime, which is one of the more appealing long-term benefits. For clients who want to reduce future forced withdrawals, especially if they don’t need the income, moving funds through an IRA rollover to Roth before RMD age can reduce the size of the pre-tax account that will eventually require distributions. However, any RMD already due for the current year generally cannot itself be converted; it must be taken first.

6. Should the conversion happen all at once or in smaller pieces?

This is one of the most common planning questions, and there’s no single right answer. Converting a large balance in one year can push a client into a much higher tax bracket, potentially affecting things like Medicare premium surcharges or the taxability of Social Security benefits. Many planners instead recommend spreading conversions across several years, filling up the current tax bracket without spilling into the next one. For example, a retiree in a lower-income year between leaving work and starting Social Security might convert a portion of their IRA each year to take advantage of the temporarily lower bracket.

7. Does this impact Medicare premiums?

Yes, and this is frequently overlooked. Medicare Part B and Part D premiums are based on income from two years prior, using a measure called Modified Adjusted Gross Income. A large IRA rollover to Roth in one year could trigger higher premiums two years later, sometimes called IRMAA surcharges. Clients close to Medicare age should model this out carefully before converting a large sum in a single year.

8. What about state income taxes?

State tax treatment varies. Some states tax converted amounts the same as federal law, others offer partial exemptions for retirement income, and a handful have no state income tax at all. If a client is planning a move to a different state in retirement, timing a conversion before or after that move could change the total tax owed. This is a detail that’s easy to mi

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