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Guide

Understanding a 401(k) Self-Directed Brokerage Account

Learn how a workplace plan's self-directed brokerage account works, what broader investment access may mean, and which costs, restrictions and risks to review.

How an SDBA fits inside a workplace plan

A brokerage window is a feature within a participating workplace plan, not a separate rollover IRA. The employer plan determines whether the feature is available and which investments, trading practices and account arrangements it permits.

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Using the feature generally involves directing eligible assets within the plan rather than moving them out of the employer plan. Ask the plan administrator to explain the account-opening process, any restrictions and how contributions are handled.

Potential uses and tradeoffs

An SDBA may offer additional investment choices for a participant with needs not addressed by the core menu. Depending on plan and provider rules, it may also allow an outside advisor to assist with the participant's account. Neither access nor advisor involvement is automatic.

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More available investments do not make an account better suited to your goals by themselves. Compare the core menu with the brokerage window, and consider whether the added choices are worth the additional decisions and costs.

  • Review the available investment types and any excluded investments.
  • Compare account, transaction, fund and advisory costs.
  • Confirm whether the plan permits the type of advisor access you are considering.

Risks and questions to ask before enrolling

A brokerage window does not protect investments from losses. Concentrated holdings, overlapping funds, unfamiliar products and trading decisions can introduce risks that are difficult to recognize from an account statement alone.

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Request the plan's brokerage-window materials and fee disclosures. Understand who is responsible for selecting and monitoring investments, what assistance is included, and how to return to the core menu if your needs change.

Frequently asked questions

Does every workplace plan offer an SDBA?

No. Availability and permitted investments depend on the employer plan and its provider. Ask the plan administrator for the brokerage-window materials before assuming you are eligible.

Is opening an SDBA the same as a rollover?

No. A brokerage window is a feature inside an employer plan. A rollover moves an eligible distribution to another eligible retirement account and follows different rules.

Can an advisor manage investments through an SDBA?

Possibly. The plan and brokerage provider must permit the relevant advisor access, and an advisory agreement must describe the services, authority and costs. Access should be confirmed before relying on it.

Can an SDBA lose value?

Yes. Investments available through a brokerage window can lose value. Broader choice and professional involvement do not eliminate market, concentration or other investment risks.

What costs should I compare?

Compare the plan's core investment costs with any brokerage account charges, transaction costs, investment expenses and advisory fees. Review the services provided as well as the costs.

Sources and further reading

  1. ERISA Advisory Council: Understanding Brokerage Windows in Self-Directed Retirement Plans(opens in a new tab)

    Hosted by the Department of Labor. This Advisory Council report is background research; its contents do not represent the position of the Secretary or the Department of Labor.

  2. Department of Labor: Understanding Retirement Plan Fees and Expenses(opens in a new tab)
  3. IRS: Rollovers from Retirement Plans(opens in a new tab)

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