IRA Rollover Tax Guide 2026: What's Taxable, What Isn't, and How to Avoid the Withholding Trap

A traditional IRA rollover done correctly is fully tax-free. Done wrong — taking the distribution in your own name, missing the 60-day deadline, violating the once-per-year rule, or not opting out of withholding — the same transaction becomes ordinary income, potentially plus a 10% early withdrawal penalty. This guide explains what triggers a tax bill, the critical difference between IRA and 401(k) withholding, and how to read the 1099-R your custodian sends the IRS.

The basic rule: IRC § 408(d)(3)

Under IRC § 408(d)(3), a distribution from a traditional IRA is excluded from gross income if it is rolled over within 60 calendar days to another eligible retirement account — a traditional IRA, SEP IRA, SIMPLE IRA (after the 2-year holding window), 401(k), 403(b), or governmental 457(b). If the rollover is completed correctly and on time, taxable income from the distribution is $0.

The IRS knows about your rollover through two tax forms: the Form 1099-R your old custodian sends (reporting the distribution) and the Form 5498 your new custodian sends (reporting the rollover contribution). You reconcile them on Form 1040 lines 4a and 4b.

Two rollover methods — different risks

Trustee-to-trustee transfer (no-risk path)

You instruct the old custodian to wire or send the funds directly to the new custodian. The money never passes through your hands.

• No withholding — the transfer never triggers IRC § 3405 withholding rules
• No 60-day deadline — you never received a distribution, so there's no clock
• Does not count against the once-per-year rule — trustee-to-trustee transfers are unlimited
• Many custodians don't issue a Form 1099-R for a direct transfer (it's not a distribution)

For most IRA-to-IRA moves, trustee-to-trustee is the cleanest path and eliminates all the risks below.

60-day rollover (indirect rollover)

The custodian distributes the funds to you — by check or deposit. You have exactly 60 calendar days from the date of distribution to deposit 100% of the original pre-withholding amount into an eligible retirement account. If you succeed, the distribution is tax-free. If you deposit less than the full amount — or miss the deadline — whatever you fail to redeposit is taxable ordinary income for that year, plus potentially the 10% early withdrawal penalty if you're under 59½.

The IRS can waive the 60-day deadline in narrow circumstances (hospitalization, death, natural disasters — Rev. Proc. 2016-47 self-certification). The waiver is not available for missing the once-per-year limit.

The withholding trap: IRA and 401(k) rules are completely different

This is the most expensive mistake in the rollover world. Withholding rules for an IRA distribution differ fundamentally from a 401(k) or other employer-plan distribution.

The IRA withholding trap in practice

You request a $400,000 distribution from your IRA to roll over to a new custodian. You forget to file Form W-4R. Your custodian follows the IRC § 3405(b) default: it sends you a check for $360,000 and remits $40,000 to the IRS as a withholding payment.

To complete a tax-free rollover, you must deposit $400,000 — the full pre-withholding amount — within 60 days. You received only $360,000. You must fund the $40,000 gap from personal savings. You'll eventually recover it as a tax refund when you file, but you need the cash now.

If you can only deposit the $360,000 you received, the $40,000 is treated as a taxable distribution: ordinary income this year, plus the 10% early-withdrawal penalty if you're under 59½ and no exception applies.

The once-per-year rollover rule

You can only complete one IRA-to-IRA 60-day rollover per individual per 365-day rolling window — regardless of how many IRA accounts you own.¹ This is not a per-account limit; it applies across all your IRAs as a single pool.

The once-per-year limit means:

• If you roll IRA #1 to IRA #2 via a 60-day rollover in January, you cannot do another 60-day IRA rollover from any IRA until the following January.
• Neither the sending IRA nor the receiving IRA can participate in a new 60-day rollover during the 365-day period.
• Violating the rule makes the second distribution a taxable distribution — plus potentially a 6% excess-contribution penalty if you deposited it into an IRA.

The rule does not apply to:

• Trustee-to-trustee transfers (no limit — do as many as you want)
• Rollovers from a 401(k) or other employer plan into an IRA (not an IRA-to-IRA rollover)
• Roth conversions (treated separately as a conversion, not a rollover)

Roth conversion: always taxable in the conversion year

Converting a traditional IRA to Roth is not a tax-free rollover — it's a taxable event. The converted amount is added to your ordinary income for the year and taxed at your marginal rate. There is no income limit on conversions; anyone can convert regardless of MAGI. You do not owe the 10% early withdrawal penalty on a Roth conversion, even if you're under 59½, as long as you do not withdraw converted funds to pay the tax bill within five years of the conversion.

2026 federal income tax brackets (taxable income after deductions)²

The Medicare IRMAA cliff

If you or your spouse are on Medicare, a Roth conversion can trigger the Income-Related Monthly Adjustment Amount (IRMAA) — a Part B and Part D surcharge based on your MAGI from two years prior. In 2026, the first IRMAA tier begins at $109,000 single / $218,000 MFJ (based on 2024 MAGI).³ Just $1 over this threshold adds $81.20/month ($974/year) per person to Medicare Part B premiums. A large Roth conversion can push a couple across multiple tiers simultaneously.

For full conversion planning with IRMAA tier-by-tier modeling, see our Roth Conversion After Rollover guide.

Withholding impact calculator

If you take an IRA distribution intending to roll it over, this calculator shows the withholding cost and the tax exposure from an incomplete rollover.

Reading your Form 1099-R

Your old custodian issues Form 1099-R by January 31 of the following year to report any distribution — whether or not it was rolled over. Box 7 contains a distribution code that tells the IRS the nature of the payment.

What you do with it on your return: Report the full distribution on Form 1040 line 4a (IRA distributions). If you completed a tax-free rollover, enter $0 on line 4b (taxable amount) and write "ROLLOVER" next to it. The IRS matches this against the Form 5498 the receiving custodian files showing your rollover contribution. If the amounts match, no tax due.

Form 5498: the confirmation nobody reads

When you deposit a rollover contribution into an IRA, the receiving custodian sends Form 5498 to you and the IRS — typically by May 31 of the following year, two months after your tax filing deadline. You don't need it to file, but it confirms to the IRS that the rollover was completed. Keep it for your records; the IRS matches it against your 1040.

State taxes on IRA rollovers and Roth conversions

Most states follow federal treatment: a completed rollover is not taxable; a Roth conversion is taxed as ordinary income at the state's marginal rate. Important exceptions:

States that don't tax IRA distributions (2026)⁵

No income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming.

Income tax, but retirement distributions exempt: Illinois (flat 4.95%, retirement income excluded), Iowa (all retirement income for residents 55+), Michigan (fully exempts most retirement income as of 2026), Mississippi (retirement income excluded; state rate drops to 4% in 2026), Pennsylvania (retirement income excluded for residents who have met plan requirements, including IRA distributions after age 59½).

For residents of these 13+ states, a Roth conversion has no state income tax cost — making the conversion economics significantly better than in high-tax states.

High-tax states: conversion cost rises sharply

California (up to 13.3%), New York (up to 10.9%), New Jersey (up to 10.75%), and Oregon (up to 9.9%) apply their top marginal rates to Roth conversion income without special retirement income exclusions for most filers. A $200,000 Roth conversion at 22% federal + 10.9% New York carries a combined marginal rate of 32.9%. If you plan to retire to a no-income-tax state, timing large Roth conversions after the move can eliminate state tax on the conversion entirely.

Three real scenarios

Scenario 1: Clean rollover, no withholding

Karen, 61, rolls her $850,000 IRA from Fidelity to Vanguard via trustee-to-trustee transfer. No Form 1099-R is issued. No Form W-4R needed. No 60-day clock. She enters $0 on Form 1040 line 4b. Federal tax: $0. State tax (Texas): $0. Total cost of the rollover: the Vanguard account opening fee (none).

Scenario 2: The withholding trap

Mark, 57, takes a $500,000 60-day rollover from his IRA. He forgets to opt out of withholding. His custodian sends him a check for $450,000 and remits $50,000 to the IRS (IRC § 3405(b) default). Mark has $450,000 in savings to deposit — he redeposits exactly what he received. Result: $50,000 taxable ordinary income. At his 22% federal rate plus 6.97% Massachusetts state rate: about $14,485 in extra taxes. No 10% penalty (over 59½, but 57 is actually under 59½ — so the 10% penalty also applies unless an exception applies: another $5,000). Total unnecessary cost: ~$19,485 for forgetting to file Form W-4R.

Scenario 3: Roth conversion and the IRMAA cliff

Linda and Tom, 67 MFJ, are on Medicare. Their 2024 MAGI was $200,000. They want to convert $80,000 from traditional IRA to Roth in 2026. The conversion pushes their 2026 MAGI to $280,000. Two years later (2028), the IRS looks at their 2026 MAGI to set their IRMAA tier — and $280,000 MFJ crosses the 2026 second IRMAA tier threshold. Each pays an extra $162.40/month in Part B premiums in 2028 — $3,898/year for the couple. A fee-only advisor would catch the tier break and recommend capping the 2026 conversion at $274,000 total MAGI (the 2026 second-tier threshold), then converting the remainder in 2027 when the IRMAA clock is based on 2025 income.

When a fee-only advisor adds the most value

• Withholding coordination: Making sure Form W-4R is filed before a large 60-day rollover and that bridge funding is in place.
• Roth conversion sizing: Filling brackets precisely to avoid IRMAA tier breaches — staying $1 under a threshold can save $1,000+/year per person.
• Multi-year conversion sequencing: Spreading a $500K balance across 5–7 years at 22% rather than converting everything in a single year at 32–35%.
• State tax timing: Coordinating large Roth conversions to occur after a move to a no-income-tax state eliminates the state portion of the bill entirely.
• Once-per-year rule compliance: Managing multiple IRA accounts without accidentally violating the 365-day limit and triggering a taxable distribution.

Related guides

• Direct vs. Indirect Rollover: The 20% Withholding Trap — 401(k) withholding mechanics and the 60-day deadline
• Roth Conversion After Rollover: Bracket Targeting — how much to convert and when
• Pro-Rata Rule & Backdoor Roth — how IRA balances affect Roth conversion taxes
• 9 IRA Rollover Mistakes That Cost Real Money — complete checklist
• SIMPLE IRA Rollover: The 2-Year Trap — the 25% penalty window

1. IRS Announcements 2014-15 and 2014-32; Bobrow v. Commissioner, T.C. Memo 2014-21; IRS.gov — Rollovers of Retirement Plan and IRA Distributions
2. IRS Rev. Proc. 2025-32; 2026 tax brackets verified against IRS guidance and Kiplinger 2026 tax tables. Standard deduction: $32,200 MFJ / $16,100 single.
3. 2026 Medicare Part B base premium $202.90/month; first IRMAA tier begins at $109,000 single / $218,000 MFJ (based on 2024 MAGI); surcharge adds $81.20/month per person. Kiplinger — Medicare Premiums 2026
4. IRS Instructions for Forms 1099-R and 5498 (2025/2026); Code Y is new for 2026 reporting of QCDs. QCD limit: $111,000/year for taxpayers age 70½+ (2026, inflation-adjusted).
5. AARP — States That Don't Tax IRA and 401(k) Distributions; verified for 2026 tax year. Michigan full exemption effective for 2026 returns.

Tax values verified as of May 2026 against IRS.gov, CMS.gov, and AARP. Consult a qualified tax professional for advice specific to your situation.