Common 401k Rollover Mistakes 2026
Expert guide: Common 401k Rollover Mistakes 2026 – Avoid These Costly Errors.
Top 401k rollover mistakes: (1) Missing the 60-day deadline on indirect rollovers, (2) Not replacing the withheld 20% from personal funds, (3) Rolling to Roth IRA without accounting for the tax bill, (4) Cashing out instead of rolling over (income taxes + 10% penalty), (5) Letting old 401k stay at former employer forgotten.
401k Rollover Checklist
- Open your new IRA first before starting the rollover process
- Request a direct rollover — never have the check made out to you
- Confirm it's going to the right account — Traditional 401k → Traditional IRA (tax-free)
- Invest the funds — rolled-over money often lands in cash — invest in ETFs promptly
- Update your beneficiaries on the new IRA account
Frequently Asked Questions
Direct rollovers typically take 2–4 weeks: 1–3 days to open the new IRA, 5–10 business days for the old plan to process, 1–5 business days for the receiving institution to credit the funds, then 1–3 days to invest. Some plans take longer — follow up if it takes over 4 weeks.
Only if the old plan has excellent investment options (Vanguard institutional funds) or very low costs. Most employer 401ks have higher expense ratios than IRAs at Fidelity or Vanguard. Rolling to an IRA gives you broader investment options, potentially lower costs, and one fewer account to track. Exceptions: if you might need the funds before 59½ (401k has penalty-free access at 55 in some cases).
The Most Costly Mistakes
- Choosing indirect when direct was available — unnecessarily taking a distribution check triggers 20% withholding and the 60-day clock for no real benefit — always request a direct trustee-to-trustee transfer unless you have a specific reason not to.
- Only redepositing the net amount received — if 20% was withheld on an indirect rollover, redepositing just the 80% you actually received (rather than the full 100%, replaced from other funds) makes the withheld 20% a taxable distribution.
- Missing the 60-day window — the clock starts the day you receive the funds, not the day you requested the distribution — losing track of this date is a common, expensive error.
- Violating the one-rollover-per-year rule — attempting a second indirect IRA-to-IRA rollover within 12 months makes that second rollover a fully taxable distribution — this rule doesn't apply to direct rollovers or 401(k)-to-IRA moves specifically, which is one more reason to prefer direct rollovers.
- Rolling pre-tax money into a Roth IRA without expecting the tax bill — this is a taxable conversion, not a simple tax-free rollover — failing to plan for the resulting tax liability can create an unpleasant surprise at tax filing time.
A Simple Rule to Avoid Most Mistakes
Use direct trustee-to-trustee transfers whenever possible, and avoid the 60-day indirect rollover unless there's a specific reason you can't do a direct transfer. This single habit eliminates the majority of the costly errors covered above.
This page is for educational purposes and isn't personalized tax or investment advice. Rollover rules and tax treatment depend on your specific plan and situation — confirm details with your plan administrator or a tax professional before acting.