Short answer: Converting money from a traditional IRA to a Roth IRA usually creates ordinary taxable income on the taxable portion in the year of the conversion. The conversion itself generally does not trigger the 10% early-distribution additional tax. A later withdrawal can create a separate 10% issue if it reaches the taxable part of a conversion during that conversion’s five-tax-year period and no exception applies.
That result depends on four details: whether the amount is taxable income, where it falls under Roth ordering rules, your age and exception eligibility, and which of two different five-year tests applies. The federal rules summarized here come from IRS Publications 590-A and 590-B for tax year 2025, IRS Topic 451, and the 2025 Form 5329 instructions. State income-tax treatment and your exact liability require a separate analysis.
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Conversion tax and early-withdrawal penalty are separate questions
A traditional-to-Roth IRA conversion moves assets into a Roth IRA. For the conversion year, the taxable portion generally enters gross income as ordinary income. Any amount representing nondeductible basis is generally not included in income, although the account records and applicable IRS allocation rules determine the result.
The 10% charge is an additional tax on certain early distributions. It is not a substitute for ordinary income tax. A properly completed conversion generally is not itself subject to that additional tax, even when the conversion creates a large income-tax bill. The two events can occur in different years: income tax may be due in the conversion year, while an additional tax may arise if a later Roth distribution reaches a taxable conversion layer too soon.
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What happens if you keep part of a distribution?
If an IRA owner takes money out and converts only part of it, the amount retained is generally taxable except to the extent it represents basis. The retained taxable amount may also be subject to the 10% additional tax if the owner is under the applicable age and no exception applies. Calling a transaction a “conversion” does not make a retained distribution tax-free.
How much of a conversion is taxable?
Publication 590-A states that conversion amounts are normally included in income for the year converted. In practical terms, separate the transaction into:
- Taxable conversion amount: the portion that must be included in that year’s gross income.
- Nondeductible basis: the portion generally excluded from income because it was already taxed or otherwise treated as basis under the IRA rules.
Your custodian’s year-end forms do not replace your own basis and distribution records. A reliable calculation requires the traditional IRA information used for the conversion and the tax forms for prior nondeductible contributions and distributions. Without those records, you cannot determine the taxable amount precisely from the conversion amount alone.
Income-tax effects are not a flat conversion fee
The taxable portion is added to your other income for that tax year. The resulting federal tax depends on filing status, other income, deductions, credits, and the tax brackets that apply to you. A conversion can therefore increase the tax due, reduce income-based benefits, or affect other calculations even though the transaction avoids the 10% additional tax at the conversion stage. The IRS material does not calculate an individual’s liability without those facts.
The conversion five-tax-year rule
Each conversion or qualifying rollover has its own five-tax-year recapture period. The period starts on the first day of the tax year in which that conversion or rollover occurs—not on the day the money moves.
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For example, a calendar-year taxpayer who converts on February 25, 2025, has a conversion period beginning January 1, 2025. A regular Roth contribution designated for 2024 and made on February 25, 2025, has a period beginning January 1, 2024. The transaction date does not change either starting point.
If a Roth distribution during a conversion’s period reaches the taxable portion of that converted amount, the 10% additional tax may apply. The conversion income was reported earlier, but the additional tax is generally paid in the year of the later distribution. This is why a conversion can be taxable in one year and still create a penalty question in a later year.
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The IRS describes the rule this way: “A separate 5-year period applies to each conversion and rollover.” A 2025 conversion and a 2026 conversion therefore have different recapture periods. Keep a dated schedule of each conversion, its taxable amount, and the first tax year of its five-year period rather than relying on one account-level date.
The qualified-distribution five-year test is different
Roth IRAs use another five-year test to determine whether a distribution is a qualified distribution. This period generally begins with the first tax year for which you made a Roth IRA contribution. Qualification also requires an eligible event, such as reaching age 59½, disability, death, or a qualifying first-home distribution.
The qualified-distribution period is not necessarily the same as the conversion recapture period. A distribution can satisfy one test and fail the other. For instance, an older Roth IRA may have met the qualified-distribution clock while a recent conversion is still inside its separate five-tax-year recapture period.
Why the distinction matters
The conversion clock asks whether a later distribution has reached a taxable conversion layer too soon. The qualified-distribution test asks whether Roth earnings and other amounts can be distributed without ordinary income tax under the Roth qualification rules. Analyze the relevant clock for the specific dollar layer being withdrawn; do not substitute one five-year period for the other.
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Roth IRA distribution ordering determines what comes out first
Federal ordering rules generally treat Roth IRA distributions as coming from these layers in sequence:
- Regular contributions.
- Conversion and rollover contributions.
- Earnings.
Within a conversion or rollover layer, amounts that were taxable when converted are treated as distributed before amounts that were not taxable. This ordering determines whether a withdrawal has reached a taxable conversion amount that may be subject to recapture or has reached earnings that may be taxable when the distribution is not qualified.
The ordering applies across the Roth IRAs you own. You generally cannot simply designate a withdrawal as coming from a particular account or from a preferred conversion. Your complete distribution history controls the layer reached, so keep records for every Roth IRA and every conversion.
When the 10% additional tax can apply
The 10% amount generally applies to the taxable portion of an early distribution. It is an additional tax, so ordinary income-tax rules may apply separately to an amount that is taxable. In a conversion context, the recapture amount is generally the part of the conversion that had to be included in income.
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Age is one central test: distributions after reaching age 59½ generally avoid the additional tax under that age-based exception. Before that age, an exception may still apply, but each exception has its own conditions and limits.
Common IRS-listed exceptions
- Age 59½: the statutory age exception.
- Disability: a qualifying disability under the IRS rules.
- Death: distributions to a beneficiary after the owner’s death.
- First home: a qualifying first-home distribution, subject to the applicable dollar limit and eligibility rules.
- Substantially equal periodic payments: a qualifying payment series that follows the required method; changing it improperly can create consequences.
- Unreimbursed medical expenses: qualifying expenses above the applicable threshold. IRS guidance cites 7.5% of adjusted gross income among the conditions.
- Health-insurance premiums during qualifying unemployment: available only when the detailed unemployment and coverage conditions are met.
- Qualified higher-education expenses: limited to qualifying costs under the applicable rules.
This list is not blanket permission to withdraw early. Documentation, dollar limits, timing, and definitions differ by exception. A distribution may be taxable even when the 10% additional tax is waived.
How to analyze a proposed withdrawal
- Identify the transaction. Decide whether you are converting the entire distribution or retaining some of it. A retained amount is analyzed as a distribution, not as a completed conversion.
- Determine the taxable conversion amount. Separate the portion included in income from nondeductible basis using your IRA records and the applicable-year IRS forms.
- List every Roth distribution for the year. Apply the ordering rules across all Roth IRAs, starting with regular contributions, then conversion and rollover layers, then earnings.
- Match the distribution to a conversion layer. Within that layer, taxable converted amounts come before nontaxable converted amounts.
- Check the relevant five-year period. Use the individual conversion’s period for recapture. Separately test whether the distribution is qualified under the Roth five-year rule and an eligible event.
- Check your age and exceptions. If you are under 59½, determine whether a specific exception applies and gather the required documentation.
- Prepare the correct-year reporting. Conversion income belongs to the conversion year. If an early-distribution additional tax applies, it belongs to the distribution year.
Reporting and the limits of recharacterization
Form 5329 is the IRS form used to report additional taxes on early distributions and to claim an applicable exception when required. Whether you must file Form 5329, and which line or exception code applies, depends on the distribution and your facts. Follow the instructions for the tax year of the distribution rather than copying a prior year’s treatment.
Publication 590-A also states that conversions made in tax years beginning after December 31, 2017, cannot be recharacterized as traditional IRA contributions. A completed conversion under current rules generally cannot be undone by changing its label after the fact. If a conversion was reported incorrectly, correction options are fact-specific; do not assume recharacterization is available.
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| Question | Traditional-to-Roth conversion | Later Roth withdrawal |
|---|---|---|
| What may be taxed as ordinary income? | The taxable portion converted in the conversion year. | Earnings or other taxable amounts when the distribution is not qualified; a retained traditional-IRA distribution can also be taxable. |
| Does the 10% additional tax automatically apply? | Generally no, when the conversion is properly completed. | It may apply to a taxable conversion layer reached during that conversion’s five-tax-year period, unless an exception applies. |
| Which five-year test matters? | The conversion’s own recapture period begins January 1 of its conversion tax year. | The conversion recapture period and, for qualified-distribution treatment, the separate Roth five-year period. |
| What records are essential? | Conversion date and year, amount, taxable portion, and basis records. | All Roth distributions, contribution and conversion history, taxable conversion layers, age, and exception documentation. |
Common mistakes and how to avoid them
Confusing tax with penalty
Paying income tax on a conversion does not prepay or eliminate a later 10% additional tax. Treat the income-tax calculation and the early-distribution calculation as separate steps.
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Starting the five-year clock on the transfer date
For conversion recapture, the clock starts January 1 of the tax year, even when the transfer occurs later. A February conversion is not measured from February.
Using one five-year rule for everything
The conversion recapture period and qualified-distribution period answer different questions. Record both where applicable.
Ignoring Roth ordering
You cannot choose to call a withdrawal earnings-free or assign it to a particular Roth account. Contributions, conversion layers, and earnings are ordered by the IRS rules across your Roth IRAs.
Assuming an exception is automatic
Medical, education, first-home, unemployment-insurance, substantially equal payment, disability, and other exceptions have specific definitions and limits. Preserve receipts, payment records, and other proof before filing.
A recordkeeping checklist
- Keep the Form 1099-R and other custodian statements for each conversion and distribution.
- Record the tax year and date of every conversion or rollover.
- Track the taxable and nontaxable portions of each conversion.
- Retain prior returns and worksheets showing nondeductible traditional-IRA basis.
- Maintain a running total of regular Roth contributions and all Roth distributions.
- Document age, disability, beneficiary status, first-home costs, education costs, medical expenses, insurance premiums, or payment schedules used to claim an exception.
- Use the IRS instructions for the tax year being filed, because form lines and instructions can change.
What this means for a conversion decision
A conversion may make sense for reasons unrelated to avoiding the 10% tax, but the amount should be evaluated against your tax bracket, other income, IRA basis, state tax rules, and time horizon. The federal rules alone do not establish an appropriate conversion amount for an individual. Before moving money, model the conversion-year income and reserve cash for any resulting tax; then map the likely withdrawal date against each conversion’s five-tax-year period and the separate qualified-distribution test.
If your circumstances involve multiple conversions, mixed basis, a planned early withdrawal, or a possible exception, use a tax professional who can reconstruct the IRA and Roth distribution history. The key is not simply whether a transaction is called a conversion, but which tax layer the IRS ordering rules reach in the year you take money out.
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