Recharacterize Roth to traditional: undoing an IRA contribution (not a conversion)

Start here: you cannot undo a Roth conversion

If you converted a traditional IRA to a Roth, watched the market fall or the tax bill land, and came looking for the reverse gear — it was removed eight years ago. Section 13611 of the Tax Cuts and Jobs Act repealed the rule that let taxpayers unwind a conversion, and the IRS states the position without qualification: a conversion made on or after 1 January 2018 cannot be recharacterized (IRS — IRA FAQs, recharacterization). The repeal also covers amounts rolled over to a Roth IRA from a 401(k), 403(b) or governmental 457(b) after 2017.

Three things you can still do if a conversion has gone wrong, none of them a reversal:

• Stop converting for the rest of the year. Conversion is not all-or-nothing — plan $120,000, execute $40,000 in January, and you may leave the other $80,000 alone. The strongest argument for converting in instalments.
• Offset the income in the same tax year with charitable deductions, a bunched donor-advised-fund gift, business losses, or a deduction-heavy investment. The conversion stays; the tax on it need not.
• Size the next one properly. Run bracket headroom, IRMAA thresholds two years out and capital-gains stacking in the conversion calculator before you press the button, because afterwards there is nothing to press.

Conversion mechanics are in the Roth conversion guide; the five-year clock each one starts is in the Roth conversion 5-year rule.

What a contribution recharacterization actually is

A recharacterization lets you treat a regular contribution made to a Roth IRA as having been made to a traditional IRA, or the reverse. The IRS is precise about the boundary: it "does not include a conversion or any other rollover." You instruct the first custodian to transfer the contribution plus the earnings on it to the second IRA, and the contribution is then treated as though it had been made there on the original date.

Three consequences follow from that retroactive fiction, and they are the whole value of the rule:

• It is not a distribution. No 10% early distribution tax, no withholding, no 60-day clock, and it does not count against the once-per-12-months indirect rollover limit.
• It is not taxable. The earnings move with the contribution and stay inside the receiving IRA. Nothing hits your 1040.
• It fixes eligibility retroactively. A Roth contribution that was excess because modified AGI landed above the phase-out becomes a traditional IRA contribution instead — and traditional IRAs have no income limit for contributing, only for deducting. The 6% excise tax under §4973 never applies, because the excess is deemed never to have existed.

The 2026 direction most people need is Roth → traditional, because the Roth phase-out catches high earners: $153,000–$168,000 of modified AGI single, $242,000–$252,000 married filing jointly, against a combined IRA limit of $7,500 ($8,600 at 50 or older) per the IRS's 2026 cost-of-living announcement. Traditional → Roth is equally available, and partial recharacterizations are allowed. (One newer wrinkle shares that $7,500 cap: a 529-to-Roth rollover counts against it in the year it lands — and, unlike a contribution, it cannot be recharacterized.)

Recharacterization vs conversion vs return of excess

These three get conflated constantly, including by people who work at brokerages. They do different things, and picking the wrong one costs either tax or a 6% annual penalty.

The 1099-R coding for each of these is unpacked in Roth conversion 1099-R codes. Sources: IRS Publication 590-A and the 2026 Instructions for Forms 1099-R and 5498.

The deadline, and the extension you may not know you have

The deadline is the due date of your return for the year the contribution was made, including extensions. For a 2026 contribution that is 15 April 2027, extended to 15 October 2027. For the 2025 contribution many readers are still holding, it is 15 October 2026 — a date that has not yet passed as this is written.

The deadline attaches to the contribution year, not the calendar: a contribution made in March 2027 but designated for 2026 is governed by the 2026 deadline, which by then leaves only weeks. Once the date passes there is no relief — an excess Roth contribution neither recharacterized nor withdrawn draws the 6% excise tax under §4973 for every year it remains, on Form 5329.

Net income attributable: the earnings that travel with the money

You cannot move the bare contribution. The transfer must include the net income attributable (NIA) to it — the earnings it generated, or the losses it suffered, while it sat in the first IRA. The formula lives in Reg. §1.408-11 and is reproduced as Worksheet 1-3 in Publication 590-A:

Two things surprise people. NIA is calculated on the entire account, not the fund you bought — an account-wide gain drags it up even if your position fell. And NIA can be negative: in a down market you transfer less than you contributed, which is correct, not an error.

Had the Roth fallen to $47,000, the ratio would be −0.060, the NIA −$450, and only $7,050 would move. Either way nothing is reported as income. Publication 590-A notes the trustee usually figures the related earnings for you — check the arithmetic anyway, because the number matters for the step that follows.

Recharacterize, then backdoor: the money move

This sequence rescues the most common IRA mistake of the year: contributing to a Roth in January on an income estimate, then finishing above the phase-out because of a bonus, an option exercise, or a spouse's raise.

1. Contribution. February 2026 — $7,500 into the Roth IRA for tax year 2026.
2. Discovery. Autumn — modified AGI will land above $168,000 single, so the Roth contribution is excess.
3. Recharacterize. Before 15 October 2027, move $7,500 plus NIA into a traditional IRA. The contribution is now deemed to have been made to the traditional IRA in February 2026.
4. Establish basis. Covered by a workplace plan and above the deduction phase-out, the $7,500 is non-deductible. Report it in Part I of Form 8606 for 2026, creating $7,500 of after-tax basis.
5. Convert. Move the traditional IRA to a Roth. Because $7,500 is basis, only the growth is taxable. Report it in Part II of Form 8606 for the conversion year.

Step 5 is a conversion — which answers the question people ask about the backdoor Roth: the second leg is always a conversion, never a recharacterization. It is therefore irreversible; you have just spent the flexibility you used in step 3.

The genuine trap is not timing — it is the pro-rata rule of §408(d)(2), which compares your after-tax basis to the combined 31 December balance of every traditional, SEP and SIMPLE IRA you own. Hold a $300,000 rollover IRA from an old 401(k) and your $7,500 of basis is 2.4% of the pool, making 97.6% of the conversion taxable — recharacterizing has merely relocated the problem. The fix is to roll the pre-tax money into an employer plan that accepts it before 31 December, emptying the denominator. Having several Roth IRAs changes nothing; only the traditional side counts. And note the NIA is not basis: above, $7,500 becomes non-deductible basis and the $600 of net income does not, so converting $8,100 leaves $600 of taxable income.

How brokerages actually process it

The transaction itself is mundane — an internal trustee-to-trustee transfer between two of your own IRAs — and every major custodian has a process for it.

• Both accounts must exist first. At Fidelity, Vanguard and Schwab alike the request asks for a destination account number. Same firm on both sides is far simpler; cross-custodian recharacterizations are possible but slower.
• You specify three things: the dollar amount of the original contribution, the tax year it was made for, and the direction. The year is the field people get wrong — a March contribution made for the prior year is coded differently on the 1099-R.
• The custodian computes the NIA using the Worksheet 1-3 method. Ask for it in writing if the number looks off; you sign the return, not them.
• The transfer is normally in kind — shares move as shares, so you are never out of the market. Some firms liquidate if the receiving account cannot hold the security.
• Allow time. Several business days is typical, longer in early October when everyone else has remembered too. A request filed on 14 October may not complete.

Form names and online flows change every year or two at all three firms, so check the custodian's current help centre first.

Reporting: Form 8606, codes N and R, and the statement

Nothing here is taxable, but the IRS still needs the trail — and one piece of it is your job, not the custodian's.

• Form 1099-R from the first IRA. The trustee reports it as a distribution: fair market value recharacterized in box 1, zero in box 2a, and a box 7 code of N if contribution and recharacterization fell in the same year, or R for a prior-year contribution recharacterized in the following year (2026 Instructions for Forms 1099-R and 5498). Neither code creates taxable income; a code R form often arrives after you have filed and needs no amended return by itself.
• Form 5498 from the receiving IRA, showing the amount in the recharacterized contributions box.
• A statement attached to your return. This one is on you, and tax software hides it. The Form 8606 instructions require the type and amount of the original contribution, the amount recharacterized, the resulting net income or loss, and the date. Where the recharacterization happens in the year following the contribution, the transferred amount goes only in that statement, not on the return.
• Form 8606, Part I — where non-deductible basis is recorded if the money landed in a traditional IRA you cannot deduct. Recharacterize an entire contribution out of a traditional IRA into a Roth and you do not report it on Form 8606 at all; recharacterize part and you report the non-deductible remainder.

Keep the 8606 forever — basis you cannot document is basis the IRS will tax twice. The Roth-side ordering rules are in the Roth IRA withdrawal ordering guide.

When recharacterizing is the wrong answer

Recharacterization is not automatically the best fix for an excess Roth contribution. Sometimes the simpler transaction wins.

• You hold large pre-tax IRA balances. If pro-rata will make the later conversion 90%+ taxable and you cannot move the pre-tax money into an employer plan, recharacterizing leaves a small non-deductible slice inside a big traditional IRA and an 8606 to maintain forever. A return of excess — withdrawing the contribution plus its NIA before the deadline — is often cleaner. The cost: the NIA is taxable in the contribution year, plus 10% on the earnings if you are under 59½.
• The amount is trivial, or you want the cash. A $600 excess is not worth permanent basis tracking, and recharacterization keeps every dollar inside the IRA system by design.
• You were not actually ineligible. Recompute modified AGI first — HSA contributions, pre-tax deferrals and above-the-line deductions all reduce it.
• The deadline has gone. Withdraw the excess, pay the 6% on Form 5329 for each year it sat there, and consider applying it against a future year's limit.

The checklist

1. Confirm it is a contribution, not a conversion. If it is a conversion, stop — there is nothing to undo.
2. Recompute modified AGI against the 2026 phase-outs before assuming the contribution is excess.
3. Diary the deadline — the filing due date for the contribution year plus extensions, remembering that §301.9100-2 gives you the six months automatically if you filed on time.
4. Open the destination IRA and file the custodian's request, naming the amount, the tax year and the direction.
5. Check the custodian's NIA figure against Worksheet 1-3, then decide on the conversion separately — your 31 December traditional/SEP/SIMPLE balances decide whether the backdoor is clean.
6. File the statement, the 8606 and, if needed, the amended return marked "Filed pursuant to section 301.9100-2".