When a Roth conversion may be worth evaluating

The IRS explains that you can convert eligible traditional IRA amounts to a Roth IRA and that any untaxed amount converted is generally taxable in the conversion year. The IRS also identifies Form 8606 for reporting conversions. See the IRS guidance on IRA conversions and reporting.

A conversion is different from making a Roth IRA contribution. It moves existing retirement money between account types; contribution eligibility and limits are separate questions.

A conversion may be worth modeling when taxable income is temporarily lower than expected later, when reducing future tax-deferred balances supports the broader withdrawal plan, or when money is intended to remain invested for later years.

Those are reasons to evaluate, not reasons to act. The comparison should include the same spending plan, investment assumptions, and time period for each option.

Medicare states that Part B and Part D premiums can depend on income. Because a conversion adds taxable income, include possible premium effects in the review without assuming a particular dollar impact. See Medicare costs.

The IRS explains that a conversion completed after 2017 generally cannot be recharacterized, or undone, as a traditional IRA contribution. Treat each conversion as a final decision for that year. See the IRS IRA FAQs on conversions and recharacterizations.

The IRS states that required minimum distribution amounts cannot be rolled over, so the year's required amount generally cannot be converted to a Roth IRA. See the IRS required minimum distribution FAQs.

Useful questions include: Would the tax come from cash, a taxable account, or the retirement money itself? How would each choice affect reserves, spending, and the amount that stays invested? These are coordination questions to take to your independent tax professional, who determines the tax treatment and any estimated payments.

The IRS says qualified Roth IRA distributions are tax-free when its requirements are met. Converted amounts have their own holding-period rules, and a distribution before age 59½ may face an additional tax. Discuss the holding-period and early-distribution rules that apply to you with your tax professional before relying on the money. See the IRS overview of Roth IRAs.

A conversion can create taxable income in the year it is completed. That may require cash for taxes, reduce money available for spending or reserves, and affect other income-sensitive costs. It also moves money out of a tax-deferred account, so the decision should be compared with doing less, waiting, or not converting.

Age 65 alone does not answer the question. A useful review considers current and expected taxable income, spending and reserve needs, how the tax would be paid, future required withdrawals, Medicare premiums, and the purpose of the money. Your independent tax professional determines the tax consequences.