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'AES employees with concentrated stock positions should understand that strategies like a Section 351 exchange can offer flexibility in managing large unrealized gains while preserving long-term planning options.' – Tyson Mavar, a representative of The Retirement Group, a division of Wealth Enhancement.
'AES employees facing concentrated stock exposure may find that a Section 351 exchange provides an effective way to mitigate risk and maintain control over the timing of potential tax liabilities.' – Wesley Boudreaux, a representative of The Retirement Group, a division of Wealth Enhancement.
In this article, we will discuss:
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When a Section 351 exchange can help diversify concentrated stock positions without an immediate tax bill.
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The core eligibility rules (80% control test) and basis/step-up mechanics that drive tax deferral.
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Sample case studies (James & Sarah) illustrating the numbers and outcomes.
The Strategic Potential of Section 351: An Analysis of a Multi-Stock Case in Tax-Deferred Reorganization
A sizable amount of the wealth of many high-earning professionals at AES may be invested in a small number of highly valued equities, including company shares accumulated through restricted stock units (RSUs), the employee stock purchase plan (ESPP), or equity awards earned due to long tenure. While rebalancing may seem out of reach due to the tax ramifications of selling these positions, investors can make tax-deferred contributions of appreciated assets to a new business entity through a Section 351 exchange. When an investor wants to manage several sizable, embedded gains at once, this tactic may be especially useful.
Think about James, a client with a $10 million portfolio. The value of one stock investment, which he purchased for $50,000, has increased to $1 million, or 10% of his total portfolio. At a long-term capital gains rate that can reach 23.8% for certain high-income taxpayers (20% maximum long-term capital gains rate plus the 3.8% Net Investment Income Tax), selling this position would result in a $950,000 capital gain and an estimated $226,100 tax bill. The amount available for reinvestment would be reduced by this tax.
Section 351(a) of the Internal Revenue Code provides: “If property is transferred to a corporation by one or more persons solely in exchange for stock in such corporation and immediately after the exchange such person or persons are in control (as defined in section 368(c)) of the corporation, no gain or loss shall be recognized.” Under Section 368(c), “control” generally means ownership of at least 80% of the voting power and 80% of each class of non-voting shares.
The transferor or transferors must own at least 80% of the new corporation’s stock right after the exchange to qualify for this treatment. This can be done for investors with sizable portfolios by joining a larger seeding group or acting as the principal seeder of a new entity.
In a Section 351 transaction, any built-in gains are preserved because the shareholder’s basis in the received stock typically carries over from the contributed property. If the shares are held until death, a step-up in basis under Section 1014 may eliminate the deferred gain.
Another client example involves Sarah, who has a $13 million portfolio. She owns two appreciated stocks:
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Stock A: Originally $300,000, now worth $3 million.
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Stock B: Initial cost basis $500,000, now worth $3 million.
At a long-term capital gains rate that can reach 23.8% for certain high-income taxpayers, the aggregate unrealized gain of $5.2 million would translate into an estimated tax of roughly $1,237,600 if sold today, which can constrain portfolio adjustments.
For employees of AES holding concentrated positions, taking part in a Section 351 exchange can reduce concentration risk and defer recognition of these gains without an immediate tax bill. If assets receive a step-up in basis at death, the deferred gain may be fully eliminated under current law, and deferral can provide flexibility in managing future tax obligations.
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- Stages of Retirement for Corporate Employees
- 7 Things to Consider Before Leaving Your Company
- How Are Workers Impacted by Inflation & Rising Interest Rates?
- Lump-Sum vs Annuity and Rising Interest Rates
- Internal Revenue Code Section 409A (Governing Nonqualified Deferred Compensation Plans)
- Corporate Employees: Do NOT Believe These 6 Retirement Myths!
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Sources:
1. Internal Revenue Service. Revenue Ruling 2003-51 . Internal Revenue Bulletin 2003-21, 2003. PDF.
2. Friedel, David B., and Yaw O. Awuah. “ Sec. 351 Control Requirement: Opportunities and Pitfalls .” The Tax Adviser , 1 July 2014. Web.
3. Internal Revenue Service. “ Net Investment Income Tax (NIIT) .” IRS.gov , last reviewed 1 July 2025. Web.
4. Internal Revenue Service. Publication 551: Basis of Assets . December 2024 revision, posted 18 February 2025. PDF.
5. FINRA Investor Education Foundation (FINRA). “ Concentrate on Concentration Risk .” FINRA.org , 15 June 2022. Web.
What is the AES 401(k) Savings Plan?
The AES 401(k) Savings Plan is a retirement savings plan that allows AES employees to save a portion of their salary on a pre-tax or Roth after-tax basis.
How does the AES 401(k) plan work?
Employees can contribute a percentage of their salary to the AES 401(k) plan, and AES may match a portion of those contributions, helping employees grow their retirement savings.
What is the maximum contribution limit for the AES 401(k) plan?
The maximum contribution limit for the AES 401(k) plan is determined by the IRS and may change annually. Employees should check the latest IRS guidelines for the current limit.
Does AES offer matching contributions to the 401(k) plan?
Yes, AES offers matching contributions to the 401(k) plan, which can help employees increase their retirement savings.
When can I enroll in the AES 401(k) Savings Plan?
Employees can typically enroll in the AES 401(k) Savings Plan during the initial onboarding process or during the annual open enrollment period.
How do I change my contribution percentage for the AES 401(k) plan?
You can change your contribution percentage for the AES 401(k) plan by accessing the employee benefits portal or contacting the HR department for assistance.
What investment options are available in the AES 401(k) plan?
The AES 401(k) plan offers a variety of investment options, including mutual funds, target-date funds, and other investment vehicles, allowing employees to choose based on their risk tolerance.
Can I take a loan from my AES 401(k) plan?
Yes, AES allows employees to take loans from their 401(k) accounts under certain conditions. Employees should review the plan's loan policy for details.
What happens to my AES 401(k) if I leave the company?
If you leave AES, you have several options regarding your 401(k), including rolling it over to an IRA or a new employer’s plan, cashing it out, or leaving it in the AES plan if permitted.
Is there a vesting schedule for AES's matching contributions?
Yes, AES has a vesting schedule for matching contributions, meaning you must work for a certain period before you fully own the employer contributions made to your account.