A Roth conversion completed during an RMD year does not reduce that year's required minimum distribution. The RMD is based on the prior December 31 balance, and the required amount is not eligible for rollover or conversion. After the year's RMD is satisfied, additional eligible traditional retirement money may be converted. That conversion can reduce a later RMD only to the extent that it leaves a lower balance on a future December 31 measurement date.
Which accounts follow which RMD rules?
Do not treat every account with the word Roth or retirement the same. The owner, beneficiary status, plan document, and legal account type control both distribution and conversion choices.
| Account or status | Owner RMD boundary | Conversion boundary |
|---|---|---|
| Traditional IRA | Owner RMD rules generally apply at the applicable starting age. | The year's required amount cannot be converted; additional eligible money may be converted. |
| Traditional SEP or SIMPLE IRA | Owner IRA RMD rules generally apply. | IRA conversion rules apply, with additional SIMPLE IRA timing and plan-history checks. |
| Pretax employer plan | A non-5% owner may qualify for a still-working delay under the plan; IRA rules do not provide that delay. | A rollover or in-plan Roth conversion depends on distributability and plan terms. |
| Designated Roth plan account | Owner lifetime RMDs no longer apply for years beginning after 2023. | Moving money may still affect investments, fees, access, beneficiaries, and plan protections. |
| Roth IRA | The original owner has no lifetime RMD. | Traditional-to-Roth conversion tax and Roth distribution qualification remain separate issues. |
| Inherited account | Beneficiary category, owner death date, account type, and elections control. | Do not apply the normal owner conversion checklist; inherited-account rollover and conversion rights are different. |
The 2026 RMD guide covers tables, deadlines, aggregation, inherited-account routing, and the unresolved 1959 birth-year rule in more detail.
Does every retiree start RMDs at age 73?
No. Age 73 is relevant to many current owners, but it is not a universal rule for every birth year, plan, or beneficiary. Earlier birth cohorts had earlier applicable ages. Federal law assigns a later age to younger cohorts, while the overlapping statutory language for people born in 1959 remains reserved in the 2024 final regulations; proposed regulations would assign age 73. As of August 22, 2026, treat that proposal as planning guidance rather than a final resolution.
Employment can also matter for some employer plans. A qualifying non-5% owner may be able to delay that plan's RMD until retirement if the plan permits, but the still-working exception does not delay RMDs from the person's traditional IRAs. Separate every employer plan from every IRA before choosing a deadline.
For a concrete 2026 example, an IRA owner born in 1953 generally reaches age 73 during 2026. The first 2026 RMD may be delayed until April 1, 2027, but the 2027 RMD is still generally due by December 31, 2027. Deferring the first payment can therefore place two taxable distributions in 2027. It does not create extra conversion capacity.
What is the order of operations during an RMD year?
- Identify every RMD separately. Record the owner, account type, prior December 31 balance, applicable table, factor, and deadline.
- Apply only permitted aggregation. Traditional IRA RMDs can generally be totaled and withdrawn from one or more of that owner's traditional IRAs. Employer plans generally require separate handling, with limited rules for some 403(b) accounts. One spouse cannot satisfy the other spouse's RMD.
- Distribute the required amount. An RMD is not an eligible rollover distribution. Do not direct it to a Roth IRA or another retirement account.
- Confirm completion. Reconcile gross distributions, withholding, qualified charitable distributions, returned payments, and custodian records before assuming the RMD is satisfied.
- Evaluate an additional conversion. Only eligible amounts beyond the RMD can enter the conversion analysis, subject to plan or custodian execution rules.
- Plan tax payments. Conversion income and taxable RMD income can change withholding or estimated-tax needs. A calendar-year transaction deadline is different from a later tax-return filing deadline.
Why does a conversion not reduce the current RMD?
The IRS calculates an IRA owner's annual RMD by dividing the prior December 31 balance by the applicable life-expectancy factor. The IRS example for an owner age 75 uses a $100,000 prior year-end balance and a 24.6 Uniform Lifetime Table factor, producing a $4,065 RMD after rounding.
If that owner converts $20,000 after January 1, the $4,065 current-year requirement does not shrink, because its balance date has already passed. After the RMD is distributed, an additional eligible $20,000 conversion may reduce the traditional IRA's coming December 31 balance. The next RMD could then be lower than it otherwise would have been, but investment returns, fees, other distributions, contributions, rollovers, and the next age factor also affect the result.
Do not describe the future reduction as one dollar of conversion permanently eliminating one dollar of RMD. An RMD is a percentage of a changing balance, not a repayment schedule for a fixed principal amount. A conversion also moves value to a Roth account rather than removing it from the household, while the tax paid can reduce other household assets.
Compare a baseline and conversion scenario
Use identical market and spending assumptions in both scenarios. Change only the conversion and the consequences directly produced by it.
| Worksheet field | No-conversion baseline | Conversion scenario |
|---|---|---|
| Current-year RMD | Prior December 31 balance divided by the current factor | The same required amount; a current-year conversion does not revise it |
| Additional conversion | $0 | Candidate amount after the RMD and execution checks |
| Current taxable income | Taxable RMD and other income | Baseline plus the taxable conversion portion and related interactions |
| Tax-payment source | Existing withholding, estimates, or cash plan | Revised withholding, estimates, or cash plan without assuming IRA withholding is best |
| December 31 balances | Traditional and Roth ending values after identical returns and spending | Ending values after the conversion, tax payment, fees, and identical returns and spending |
| Next-year RMD | Baseline traditional balance divided by the next factor | Scenario traditional balance divided by the same next factor |
| Household outcome | After-tax spending, Medicare costs, and ending assets | The same measures, including conversion tax and later account flexibility |
A lower future RMD is not by itself proof of lower lifetime tax or a better household result. The conversion may increase taxable Social Security, reduce deductions or credits, affect Marketplace assistance, increase future Medicare premiums, change state tax, and alter cash available for spending. Use the Roth conversion range guide for the wider annual tax rerun and the 2026 IRMAA guide for the separate Medicare lookback.
How do IRA basis and QCDs change the record?
A traditional IRA RMD is not necessarily fully taxable when the owner has nondeductible basis. Form 8606 generally allocates basis across traditional IRA distributions and conversions using its aggregation calculation. That tax allocation does not make the required distribution eligible for rollover. Keep the RMD amount, taxable amount, conversion amount, and remaining basis as separate fields.
A qualified charitable distribution is another separate path. An eligible direct IRA payment to an eligible charity can count toward an RMD and can be excluded from income within the applicable QCD rules, but it is not a Roth conversion. The ordering of distributions can also affect which dollars satisfy the RMD. Review the 2026 QCD checklist before mixing charitable and conversion transactions.
Is the period before RMDs always the best conversion window?
No. A year after employment income falls and before RMDs begin can provide useful flexibility, but age alone does not establish a low tax rate or a favorable transaction. Social Security, pensions, capital gains, deductions, healthcare coverage, state residency, spouse income, business income, prior IRA basis, estimated payments, and cash reserves can move in different directions.
Compare several candidate years rather than assuming ages 62 through 72 are automatically best. Someone using Marketplace coverage may face a different income constraint from someone already enrolled in Medicare. A surviving spouse can later move to a narrower filing status, but future tax law, returns, spending, and life events remain uncertain. Publish ranges and stress cases rather than one optimal conversion schedule.
Use this implementation checklist
- Confirm the owner, account legal type, beneficiary status, and plan document.
- Determine the applicable RMD year, factor, balance date, aggregation rule, and deadline.
- Reconcile any prior-year basis and current Form 8606 records.
- Complete or schedule the non-rolloverable RMD before directing a conversion.
- Model a no-conversion baseline and at least two candidate conversion amounts.
- Rerun federal tax, state tax, Social Security inclusion, healthcare effects, and tax payments.
- Confirm custodian or plan processing cutoffs and do not rely on a December 31 submission alone.
- After year-end, reconcile Forms 1099-R, 5498, 8606, statements, and the actual December 31 balances.
What can the RetireStride calculator show?
The browser-only 2026 RMD calculator can estimate a current owner traditional, SEP, or SIMPLE IRA RMD from the December 31, 2025 balance and Uniform Lifetime Table when its eligibility boundaries are met. It does not model Roth conversions, future returns, Form 8606 basis, inherited accounts, the special much-younger-spouse table, taxes, QCD execution, or Medicare premiums.
Use that result as one baseline input, not as a conversion recommendation. The retirement projection can compare broad saving and spending assumptions, but it is not tax software and does not optimize conversions. See the methodology for current calculation limits.