BMT
Retirement

The 401(k) Rollover Decision: Why Moving to an IRA Can Be a Million-Dollar Mistake

Dec 06, 2025 Code Authority: Team BMT

The 401(k) Rollover Decision: Why Moving to an IRA Can Be a Million-Dollar Mistake

CORE INSIGHTS

  • The Backdoor Roth Block: Rolling pre-tax 401(k) money into an IRA triggers the Pro-Rata Rule. This permanently disables your ability to make tax-free Backdoor Roth contributions.
  • Asset Protection: 401(k)s are protected by federal ERISA law (creditor-proof). IRAs are protected by state laws, which vary and often have caps.
  • Early Access: The Rule of 55 allows penalty-free withdrawals from a 401(k) at age 55. An IRA forces you to wait until 59½.

When you leave a job, brokers scream “Rollover!” But for high-net-worth individuals, moving money to an IRA is often a strategic downgrade. You trade federal protection for state risk, and tax efficiency for complexity. Inertia is often the superior move.

What-If Scenario: The Lawsuit & The Tax Bill

Strategy Creditor Protection Backdoor Roth
IRA Rollover State Capped ($1.5M max) Blocked (Taxable)
Stay in 401(k) 100% ERISA Safe Allowed ($7k/yr)
Result: Staying put saved $500k in assets and enabled tax-free growth.

Visualizing the Opportunity Cost

*Figure 1: Tax-Free Growth Potential. The Green Bar (Backdoor Roth Access) creates massive wealth over 20 years.*

Strategic Action Steps

1
The “Reverse Rollover”
If you already rolled to an IRA, move it back! Most 401(k)s accept incoming rollovers. This clears your IRA balance to $0 for Backdoor Roths.
2
Compare Expense Ratios
Only roll over if your 401(k) fees are egregious (>0.50%). Otherwise, the legal protections of the 401(k) outweigh minor fee differences.
3
Consolidate Upward
Roll old 401(k)s into your new employer’s 401(k). This keeps money in the ERISA ecosystem and simplifies your life.

The Bottom Line: Who Should Choose What?

  • Keep in 401(k): High earners (Backdoor Roth users), Doctors/CEOs (High Liability), and Early Retirees (Rule of 55).
  • Roll to IRA: Low balance investors (<$100k) who want unlimited investment choices (Crypto/Stocks).

Frequently Asked Questions

Does an IRA offer the same protection as a 401(k)?

No. 401(k) plans have federal ERISA protection (unlimited). IRAs are subject to state laws, which may have caps or exemptions.

How does a Rollover affect the Backdoor Roth?

It triggers the Pro-Rata Rule. If you have pre-tax money in an IRA, you cannot convert new non-deductible contributions tax-free.

Can I move my IRA back into a 401(k)?

Yes. A “Reverse Rollover” moves pre-tax IRA funds into a 401(k), clearing the IRA balance to $0 and reopening the Backdoor Roth door.

Disclaimer: This content is for informational purposes only. State laws vary. Consult an asset protection attorney.