Deciding what to do with workplace retirement accounts when you’re in your 60s is one of the most consequential choices you’ll make before claiming Social Security, starting a pension or taking required minimum distributions (RMDs). This guide walks retirement planners through a systematic, practical plan: how to evaluate keeping an old 401(k) in place, rolling balances into an IRA, or transferring them to a new employer’s plan. It focuses on tax timing, RMD rules, pension coordination and practical execution steps for 2026.

Why this choice matters now

Three developments make a deliberate rollover strategy essential for people approaching or in their 60s:

  • RMD timing: As of 2026 the RMD age remains 73 for most account owners; how you hold balances affects when RMDs must start and from which accounts.
  • Tax and Medicare interactions: Big rollovers or RMDs can push you into higher income brackets, affecting federal and state taxes, potential IRMAA surcharges for Medicare, and Social Security taxation.
  • Plan-specific features: Employer plans differ on fees, investment choices, creditor protection, in-plan Roth options and whether they allow in-service distributions (important if you keep working).

Key rules you must keep top of mind

  • RMDs are mandatory for traditional pre-tax accounts beginning at your required age (generally 73 in 2026). Roth IRAs are not subject to lifetime RMDs; Roth 401(k) accounts are.
  • If you remain employed and own less than 5% of the company, you can often delay RMDs from that employer’s 401(k) until you retire. IRAs do not offer that delay.
  • RMDs from IRAs and from employer plans are calculated separately; you cannot aggregate an IRA RMD with an employer plan RMD, though you can aggregate across IRAs.
  • Rolling a traditional 401(k) into a traditional IRA preserves tax deferral; rolling to a Roth (via conversion) triggers taxable income in the conversion year.

A practical step-by-step decision process

Step 1 — Inventory and timeline

List every retirement account and benefit with the following columns: plan type (401(k), Roth 401(k), IRA, Roth IRA, pension), current balance (as of Dec 31 prior tax year), employer plan rules (in-service distribution allowed? rollover accepted?), your ownership percentage, current employment status, and expected retirement date. This inventory anchors next steps.

Step 2 — Clarify near-term constraints

Ask and document:

  • Do you plan to work past 73 or past your company’s RMD-triggering date?
  • Is the employer plan protected from creditors under federal ERISA (typical for 401(k) plans) and does that matter for you?
  • Are there in-plan Roth conversion options or low-fee institutional investment choices in the plan?

Step 3 — Compare the three options

  1. Leave the money in your old 401(k)

    Pros: May permit delaying RMDs if you’re still working and not a 5% owner; ERISA-level creditor protection; plan loans (if needed); simpler if near retirement and you want continuity.

    Cons: Often higher fees, fewer investment choices, fewer distribution options, Roth 401(k) still subject to RMDs.

  2. Roll into a traditional IRA

    Pros: Broader investment menu, potentially lower fees, consolidated recordkeeping, easier staged Roth conversions if desired (but be mindful of taxes), IRA RMDs can be aggregated across IRAs.

    Cons: Once in an IRA you generally lose the ability to delay RMDs that an employer plan might allow if you’re still working; IRAs have only state-level creditor protection in many states (not ERISA).

  3. Roll into a new employer’s 401(k)

    Pros: Preserve the “still working” RMD deferral if applicable; may retain ERISA protection and higher loan flexibility; keeps assets consolidated at employer plan.

    Cons: New plan might have limited investments or higher fees; plan may not accept rollovers from prior plans.

Step 4 — Model tax and RMD outcomes (use at least 3 scenarios)

Build three short-term (5-year) and long-term (10–15-year) projections using conservative return assumptions, expected RMD commencement age, and filing status. Scenarios should show:

  • RMD amounts and taxable income by year under each holding strategy
  • Effects on marginal tax rates and potential Medicare IRMAA thresholds
  • Impact on Social Security taxation (up to 85% of benefits taxable depending on provisional income)

Example (illustrative): Assume a single owner, Dec 31 balances of $800,000 in a traditional 401(k) and $200,000 in an IRA, planning to retire at 71, and RMDs beginning at 73. If you roll the 401(k) into the IRA, your aggregated IRA balance will drive a higher IRA RMD, potentially increasing tax in year one. If you keep the 401(k) and remain employed past 73, you may delay RMDs from that 401(k); that reduces early taxable income but concentrates future distributions later. Use a spreadsheet or retirement planning tool to quantify.

Practical examples and common scenarios

Scenario A: Still working at 73, small company owner vs. employee

If you’re still employed at 73 and you’re not a 5% owner, staying in the employer 401(k) may let you avoid RMDs from that account until you retire. Rolling those assets into an IRA would force RMDs to begin at 73. For employees planning to work part-time past 73, keeping monies in the current 401(k) can be a major tax-avoidance tactic.

Scenario B: Roth considerations

If you have Roth 401(k) balances, remember a Roth 401(k) is subject to RMDs; rolling those balances to a Roth IRA eliminates lifetime RMDs. For many retirees who want to reduce RMD-driven taxable income, a Roth IRA rollover (if allowed without conversion tax) can be an efficient move.

Scenario C: Pension plus account balances

Pension payments are separate from RMD rules and can reduce the need to draw heavily from tax-deferred accounts early. If you receive a pension, model whether taking the pension early and delaying RMDs (via staying in a 401(k), if possible) improves lifetime after-tax income.

Execution checklist: How to roll with minimal risk

  1. Confirm plan rules: Obtain the summary plan description or rollover paperwork for both the old and new employer plans.
  2. Choose direct trustee-to-trustee rollover: Avoid withholding and potential tax penalties by requesting a direct rollover to the IRA or new plan custodian.
  3. Confirm tax character: Make sure pre-tax balances going to a traditional IRA or traditional 401(k) remain pre-tax; Roth conversions should be explicit and taxable if made.
  4. Keep clear documentation: Save rollover confirmations and year-end statements to substantiate that distributions were rollovers (not taxable distributions).
  5. Consult a tax pro before doing in-service rollovers or conversions: Large conversions or many small rollovers can trigger higher taxes, IRMAA, or Medicare premium adjustments.

When to involve a financial professional

Bring a CPA or fee-only financial planner into the process if any of the following apply:

  • Your rollover or conversion will be large enough to push you into a higher tax bracket.
  • You’re coordinating rollovers with pension choices (single life vs. joint survivor) and Social Security timing.
  • You’re evaluating in-plan Roth conversions, partial Roth conversions across years, or need state-specific creditor protection advice.

Red flags and common mistakes to avoid

  • Assuming all 401(k) plans accept rollovers — some employer plans prohibit roll-ins.
  • Rolling pre-tax 401(k) amounts into Roth IRA without planning for the tax bill.
  • Overlooking that Roth 401(k) still triggers RMDs while Roth IRAs do not.
  • Ignoring the “still working” RMD deferral that could be worth tens of thousands in tax deferral if you plan to keep working.

Putting it into a timeline: a simple five-year plan for ages 68–73

  1. Year 0 (age 68): Inventory accounts; get fee and investment analyses for all plans.
  2. Year 1 (age 69): Model three scenarios (stay, IRA, new plan) including RMD projections and Social Security timing; estimate tax and Medicare impacts.
  3. Year 2 (age 70): If conversions are part of the plan, begin staged conversions in low-income years; otherwise, identify preferred custodian and confirm plan rollover rules.
  4. Year 3 (age 71): Execute planned rollovers or transfers in a stepped manner to avoid late surprises; keep records.
  5. Year 5 (age 73): Implement RMD withdrawals as required and re-check tax-withholding settings to avoid underpayment penalties.

Bottom line: match structure to goals

There is no universal “best” choice. The right answer depends on whether RMD deferral while still working matters to you, how much control and investment choice you want, the tax impact of potential conversions, and how pension and Social Security decisions intersect with taxable income. By following the inventory-model-execute framework above — and running concrete tax/RMD scenarios — you can choose the rollover path that preserves flexibility, minimizes surprise taxes, and matches your retirement cash-flow goals.

If you want, send over (or bring to a planner) a brief inventory of your accounts and your expected retirement timeline, and you’ll get a prioritized set of actions tailored to your situation.