How to Report IRA Recharacterization on Your Tax Return

To report an IRA recharacterization on your tax return, you enter the 1099-R distribution on Form 1040 lines 4a and 4b (with the taxable amount typically zero), file Form 8606 if any portion of the contribution is nondeductible, and attach a written statement to the return for the year the original contribution was made. The reporting sits on top of a fiction the IRS accepts: the contribution is treated as if it had always gone to the receiving IRA, and every form you file has to reflect that.

One boundary first. Since the Tax Cuts and Jobs Act of 2017, only contributions can be recharacterized. A Roth conversion done in 2018 or later is permanent and cannot be undone.¹ Everything below is about contribution recharacterizations.

The 1099-R From the Transferring Custodian

Your custodian reports the recharacterization as a distribution from the original IRA on Form 1099-R. Box 1 shows the total amount moved, which is the original contribution plus or minus the net income attributable (NIA) that the custodian calculates and transfers along with it. Box 7 carries a distribution code that tells the IRS this is a reclassification, not a taxable withdrawal:

Code R applies when a prior-year contribution is recharacterized in the current year. A 2025 contribution recharacterized in 2026 produces a 2026 Form 1099-R with Code R.²
Code N applies when a current-year contribution is recharacterized within the same year. A 2026 contribution recharacterized during 2026 produces a 1099-R with Code N.²

If Box 7 shows any other code, call the custodian before you file. A wrong code is the fastest way to earn an IRS notice asking why you didn’t report the distribution as income.

The 5498 From the Receiving Custodian

Form 5498 comes from the custodian of the receiving IRA and reports the contribution as if it had always been made there. Box 4 is the recharacterized-contribution box, showing the principal plus positive NIA, or a reduced amount if the NIA was negative because the account lost value during the computation period. Form 5498 usually arrives in late May, well after the April filing deadline, so you often have to file using the custodian’s confirmation statement and reconcile once the 5498 shows up.

Where It Lands on Form 1040

The 1099-R flows to Lines 4a and 4b of Form 1040. Line 4a shows the gross distribution (principal plus NIA); Line 4b shows the taxable amount, which for a properly reported recharacterization is typically zero.³ The IRS expects to see the full amount on 4a but nothing on 4b, because the transfer is a reclassification rather than a taxable event.

If you recharacterized a Roth contribution into a traditional IRA and the traditional contribution is deductible under the income and employer-plan rules, claim the deduction on Schedule 1, Line 20.⁴ If the traditional contribution is nondeductible, leave Line 20 alone and use Form 8606 to establish basis instead.

When to File Form 8606

Form 8606 tracks nondeductible basis in traditional IRAs. Whether you need it depends on the direction of the recharacterization and whether any part of the traditional contribution is nondeductible.³

Traditional recharacterized to Roth: if the entire traditional contribution moved to a Roth, don’t report the contribution on Form 8606 at all. If only part moved, report the nondeductible portion of what remains in the traditional IRA on Part I.
Roth recharacterized to traditional: report the nondeductible portion of the resulting traditional IRA contribution on Part I. Don’t report the original Roth contribution anywhere on the form.

The form’s instructions also treat any earnings or losses that accrued in the first IRA as if they had occurred in the receiving IRA, and exclude recharacterized amounts from the distribution lines in Part I.⁵ Don’t include the recharacterized amount on Line 7.

Getting the basis on Form 8606 right matters later. Without it, a future distribution or backdoor Roth conversion can end up taxed twice on the same dollars.

The Explanatory Statement You Must Attach

IRS Publication 590-A and the Form 8606 instructions both require a statement attached to the tax return for the year the original contribution was made, explaining the recharacterization.⁶ There’s no prescribed format, but the statement should give the IRS enough to match the transaction against the 1099-R and 5498. Include:

The type of contribution (traditional or Roth) and the dollar amount recharacterized.
The date of the original contribution and the tax year it was for.
The date the custodian executed the recharacterization transfer.
The type of IRA that received the contribution.
The names of the transferring and receiving trustees or custodians.
The net income attributable that moved with the contribution.

For e-filed returns, attach the statement as a PDF. For paper returns, add it as a separate page behind the 1040. Tax software often has an “explanatory statement” or “election statement” field for this purpose; verify what the software produced before submitting.

Contribution Year vs. Transfer Year

The reporting year for your tax return follows the contribution, not the transfer. Say you contribute to a Roth in December 2025 and recharacterize to a traditional IRA in March 2026. The paperwork splits like this:

The 1099-R is issued for 2026, the year the transfer happened, with Code R.²
You report the recharacterization on your 2025 return, the year the contribution was for, even though the 1099-R won’t arrive until January 2027.⁶
The receiving custodian’s Form 5498 reflects the contribution for the contribution year.

File the 2025 return using the custodian’s confirmation of the transfer, then check the 2026 Form 1099-R against your records when it arrives. If the numbers or code don’t line up, contact the custodian before the IRS does.

Deadline and Missed-Deadline Reporting

The recharacterization must be complete by your filing deadline for the contribution year, including extensions.¹ For a 2026 contribution, that’s April 15, 2027, or October 15, 2027, with an extension. Requesting the extension preserves the option even if you end up filing in April.

If you filed on time but missed the recharacterization, a narrow relief provision lets you complete the transfer within six months of the original due date and file an amended return. Write “Filed pursuant to section 301.9100-2” at the top of the amended return.⁶

Miss both windows and the contribution stays where it is. If it was a Roth contribution that exceeded the income limits, it becomes an excess contribution subject to a 6% excise tax for each year it remains in the account, reported on Form 5329.¹ The IRS can waive the penalty for reasonable cause, but the argument is much easier when you catch the problem inside the deadline than after.

1
Office of the Law Revision Counsel. 26 U.S. Code 408A – Roth IRAs
2
Internal Revenue Service. Instructions for Forms 1099-R and 5498
3
Internal Revenue Service. Instructions for Form 8606 (2025)
4
Internal Revenue Service. 2025 Schedule 1 (Form 1040)
5
Internal Revenue Service. Form 8606 – Nondeductible IRAs
6
Internal Revenue Service. Publication 590-A – Contributions to Individual Retirement Arrangements