401k Rollover and Roth IRA Conversion

Introduction

Moving a 401(k) sounds simple until the tax bill arrives. A rollover can keep your account's tax treatment intact. Moving pre-tax 401(k) money into a Roth IRA is generally a taxable conversion.

Before you move the money, you need clear answers:

• Is the move allowed?
• How much tax will it trigger?
• How do I avoid penalties?
• Does it fit my retirement and legacy goals?

This guide covers account types, transfer methods, taxes and five-year rules, alternatives, common mistakes, and a checklist to work through with a qualified tax or financial professional.

Key Takeaways

• Traditional 401(k)-to-IRA rollovers keep tax deferral; Roth conversions create taxable income.
• Roth 401(k) balances can move to a Roth IRA tax-free.
• Direct rollovers avoid mandatory withholding and 60-day deadline risk.
• Weigh fees, creditor protection, and estate goals alongside tax-free withdrawal potential.

What Is the Difference Between a 401(k) Rollover and a Roth IRA Conversion?

Rollover vs. conversion

A rollover moves eligible retirement assets from one qualified account to another. A Roth conversion turns pre-tax assets into Roth assets, which may create current taxable income. The word "rollover" describes the movement; the tax result depends on the source funds and the destination account.

Three common paths:

• Traditional 401(k) to traditional IRA: a rollover, generally tax-deferred.
• Traditional 401(k) to Roth IRA: a conversion. IRS Topic 413 treats the taxable amount moved to a Roth as generally included in gross income.
• Roth 401(k) to Roth IRA: a rollover that keeps its Roth character. The IRS says designated Roth money can go to another designated Roth account or a Roth IRA, not a traditional IRA.

Match the source to the destination

Pre-tax contributions, employer contributions, and earnings are all taxable when they go to a Roth IRA. Sent to a traditional IRA, they stay deferred.

After-tax contributions need separate attention. An account holding both pre-tax and after-tax money generally pays out a pro-rata share of each.

When you send funds to several destinations at once, IRS Notice 2014-54 treats them as one distribution. That lets pre-tax money go to a traditional IRA and after-tax basis to a Roth IRA. Ask the plan how it tracks these sources.

For Roth 401(k) money, confirm the plan's documentation and your contribution history.

When a transfer may be available

Plan rules control timing. Common triggers include:

• Leaving your employer or retiring
• Reaching age 59½, when some plans allow in-service distributions
• Plan-specific options such as partial distributions or in-plan conversions

Income limits for direct Roth IRA contributions don't block a conversion. The Congressional Research Service notes the income cap on conversions was removed in 2010. Tax liability and plan rules still apply. Hardship withdrawals are a separate limit: they generally aren't eligible rollover distributions.

How Does a 401(k)-to-Roth IRA Transfer Work?

Start with an account and plan review

Before requesting anything, identify what your 401(k) holds: pre-tax, Roth, after-tax, employer stock, or a mix. Then compare the plan with the proposed IRA on:

• Fees and investment choices
• Creditor protection
• Plan loans and withdrawal flexibility
• Beneficiary treatment and required distributions

Employer stock deserves its own analysis. If net unrealized appreciation rules are met, the stock's basis is taxed as ordinary income and the appreciation is generally taxed as long-term capital gain when sold. Rolling that stock into an IRA can forfeit this treatment.

Direct versus indirect rollovers

In a direct rollover, the plan sends money straight to the receiving custodian, electronically or by a check payable to that institution for your benefit. No mandatory withholding applies.

An indirect rollover pays you first. The plan generally must withhold 20% of the taxable amount. You then have 60 days to deposit the full distribution, which means replacing the withheld 20% from other funds. Miss the deadline and the unreplaced amount may be taxable, and possibly penalized.

Rev. Proc. 2020-46 lets you self-certify certain qualifying reasons for a late rollover. Self-certification isn't an IRS waiver, and the IRS can examine it later.

A practical sequence

1. Confirm eligibility with the plan administrator.
2. Open the correct traditional or Roth IRA.
3. Get the receiving custodian's exact rollover instructions.
4. Request a direct rollover.
5. Confirm the funds landed in the intended account.
6. Keep statements, confirmations, and tax forms.

IRA deposits often sit in cash until you choose investments. Set an allocation that matches your retirement income plan.

Reporting responsibilities

Expect a Form 1099-R. Under the 2026 instructions, code G marks a direct rollover to an eligible plan, and code H marks a direct rollover of a Roth account to a Roth IRA. You may need to report amounts on Form 1040, and Form 8606 can apply when basis is involved.

The form alone doesn't set your tax result. Source, basis, conversion amount, and other income all matter. Confirm reporting with a tax professional, especially for split transfers.

What Are the Tax Implications and Five-Year Rules?

Estimate the tax before converting

The taxable part of a conversion generally stacks on top of your other income for that year. Filing status, deductions, state of residence, pre-tax basis, and the size of the conversion all shape the bill.

For 2026, IRS inflation adjustments set these federal brackets:

Rate	Single	Married filing jointly
10%	Up to $12,400	Up to $24,800
12%	To $50,400	To $100,800
22%	To $105,700	To $211,400
24%	To $201,775	To $403,550
32%	To $256,225	To $512,450
35%	To $640,600	To $768,700
37%	Over $640,600	Over $768,700

Check state treatment too. Georgia, for example, offers a retirement-income exclusion of up to $35,000 (ages 62-64) or $65,000 (65 and older). Its instructions don't specifically address Roth conversions.

Income tax versus the early-distribution penalty

A direct rollover isn't subject to the 10% additional tax, yet a Roth conversion can still produce regular income tax. Penalty exposure depends on account type, your age, and available exceptions. One example: the age-55 separation exception applies to 401(k) plans but not IRAs.

Paying conversion tax from non-retirement money usually leaves more assets to grow tax-free, so confirm you can cover the tax from outside the account.

Two separate five-year rules

• Qualified earnings rule: Roth IRA earnings are tax-free after five tax years from your first Roth IRA contribution, plus a qualifying event such as age 59½.
• Conversion rule: Each conversion has its own five-year clock for the 10% additional tax on the taxable amount, if no exception applies.

The Roth 401(k) holding period doesn't carry over. Under Treasury regulations, the Roth IRA's clock is set separately.

If you convert in 2026 at age 57 and withdraw the taxable amount in 2028, the 10% additional tax may apply. Waiting out the five years, or reaching 59½, generally removes it.

Timing, size, and side effects

Converting a large sum at once can push you into a higher bracket. Spreading it over several years can manage brackets and cash flow. Conversions generally can't be undone: recharacterization isn't allowed for conversions after 2017.

A conversion also raises your income for other purposes:

• Medicare: IRMAA uses income from two years earlier, with tiers starting above $109,000 (individual) or $218,000 (joint).
• ACA subsidies: Higher MAGI can reduce premium tax credits.
• Social Security: More income can make more of your benefits taxable.

Roth assets offer tax diversification and have no lifetime RMDs for the owner. Weigh that against the upfront tax cost and lost liquidity.

Should You Roll a 401(k) Into a Roth IRA?

When a Roth IRA may fit

A Roth IRA can make sense if you:

• Expect higher taxable income later
• Have a low-income stretch before RMDs begin
• Want to leave tax-advantaged assets to heirs
• Value broader investment choices and beneficiary control

Tax diversification helps too. With taxable, tax-deferred, and Roth buckets, you can choose where each year's income comes from. Beneficiaries still face RMD rules, including a 10-year payout for many heirs of an inherited Roth IRA.

When another destination may be better

Alternatives include a traditional rollover IRA, staying in the old plan, moving to a new employer's plan, or an in-plan Roth conversion if offered. Consider staying put when:

• Plan fees or institutional fund pricing are lower than typical IRA costs
• You want stronger creditor protection than most IRAs provide
• You may need a plan loan, which IRAs can't offer.
• You're 55 or older and separating from service, since the Rule of 55 applies only to plans.
• You hold employer stock or expect a lower tax rate now than later.

An ICI report found 401(k) investors pay lower average fund expense ratios than IRA investors, though that isn't all-in cost. The DOL describes employer-plan assets as generally receiving stronger ERISA protection than IRAs.

If you need predictable income, coordinate any annuity decision with the rollover. FINRA notes annuitization is generally irrevocable.

Where Zebulon fits

Zebulon Tax & Wealth Advisory uses the Zebulon Method to evaluate tax strategy, investment management, retirement-income planning, and legacy design together when clients assess a rollover or Roth conversion. The firm serves individuals, families, business owners, and people nearing retirement. It doesn't prepare taxes or give legal advice, and it can coordinate with your tax professional. No specific tax outcome or return is promised.

An advisory firm recommending a rollover into an IRA it manages for a fee has a financial incentive. Ask any advisor to explain in writing why the move is in your best interest.

Common 401(k) Rollover Mistakes and a Decision Checklist

Mistakes that create avoidable problems

• Sending funds to the wrong account type
• Choosing an indirect rollover without planning for the 20% withholding
• Missing the 60-day deadline or not replacing withheld funds
• Never confirming the receiving account accepted the money
• Mishandling mixed pre-tax, Roth, and after-tax sources, or keeping poor basis records
• Overlooking employer stock
• Skipping fee comparisons
• Assuming plan features such as loans transfer to an IRA

Cash-outs are a bigger leak than many expect. An EBRI synthesis found 33% to 47% of participants withdraw some or all plan assets after a job change.

A rollover isn't automatically tax-free, and a Roth conversion isn't automatically beneficial.

Checklist before you move funds

1. Document tax sources, balance, basis, beneficiaries, employer stock, plan features, and fees.
2. Estimate your retirement income needs.
3. Compare the tax cost of a full conversion, partial conversion, traditional rollover, staying in the plan, and a new employer plan.
4. Confirm the strategy with the plan administrator and a qualified tax or financial professional.

A note on current rules

Tax laws, plan provisions, deadlines, RMD rules, and penalty exceptions change. Check current IRS guidance before acting. This article is educational and isn't individualized tax, legal, or investment advice.

Frequently Asked Questions

How much tax will I pay if I roll over a 401(k) to a Roth IRA?

It depends on your taxable pre-tax balance, filing status, other income, brackets, state rules, basis, and the amount converted. Get a current personalized estimate before you act.

Can you roll over a 401(k) to a Roth IRA without penalty?

A direct rollover avoids the 10% early-distribution tax. It doesn't avoid income tax on pre-tax money. An indirect distribution has separate risks.

Can you roll over a Roth 401(k) to a Roth IRA?

Yes. The IRS permits it, and the money generally keeps its Roth character. Plan rules and documentation still apply.

Is there a 5-year rule for converting a Roth 401(k) to a Roth IRA?

Yes, but the Roth IRA's five-year clock is set separately from your plan's. Converted funds may carry their own five-year period. Verify your account history with current IRS guidance.

Should I roll my 401(k) into a Roth IRA?

It depends on current and future taxes, retirement timing, cash for taxes, fees, income needs, estate goals, and alternatives. Compare options before deciding.

Is it better to roll over a 401(k) to a traditional or Roth IRA?

A traditional IRA generally preserves tax deferral. A Roth conversion may create tax now in exchange for potential tax-free qualified withdrawals. Compare both in the context of your whole plan.