QSST Returns

The QSST election - simpler structure, lower tax cost

A qualifying subchapter S trust (QSST) under IRC §1361(d)(2) is the simpler of the two trust elections that allow a trust to hold S corporation stock. Where an ESBT taxes S corp income at the highest individual rate (37% for 2026), a QSST pushes that income out to the beneficiary and taxes it at the beneficiary’s individual rate, potentially a significant savings when the beneficiary is in a lower bracket.

The tradeoff is a restrictive set of requirements. The trust must have exactly one current income beneficiary, all trust accounting income must be distributed currently, and corpus distributions during the beneficiary’s lifetime can only go to that beneficiary. These constraints match many single-beneficiary trusts created in estate plans, but they rule out discretionary spray trusts and accumulation trusts entirely.

QSST requirements

To qualify as a QSST, the trust must satisfy all of the following requirements under §1361(d)(3):

• Single current income beneficiary. The trust may have only one current income beneficiary, and that beneficiary must be a U.S. citizen or resident alien.
• Mandatory current income distribution. All trust accounting income must be distributed (or required to be distributed) currently to that beneficiary. The trust cannot accumulate income.
• Corpus distributions limited to the beneficiary. Any distribution of corpus during the beneficiary’s lifetime may only be made to that beneficiary; no other person may receive trust principal while the income beneficiary is alive.
• Income interest terminates at the earlier of death or trust termination. The beneficiary’s income interest must end no later than the earlier of the beneficiary’s death or the trust’s termination.
• All assets to the beneficiary on trust termination. If the trust terminates during the beneficiary’s lifetime, all trust assets must be distributed to that beneficiary.
• Election made by the beneficiary. The QSST election is made by the beneficiary (or the beneficiary’s legal representative), not by the trustee. This is the opposite of the ESBT election, which is made by the trustee. The election is filed under §1361(d)(2)(B).

We review the trust document to confirm each requirement is met before the election is filed. A trust that grants the trustee discretion to accumulate income, or that permits corpus distributions to remainder beneficiaries during the income beneficiary’s lifetime, will not qualify.

How the income is taxed

Under a QSST election, the beneficiary is treated as the owner of the S corporation stock for income tax purposes under §678. All S corporation items, including ordinary income, separately stated items, gains, and losses, flow directly to the beneficiary’s Form 1040. These items do not appear on the trust’s Form 1041 and are not part of the trust’s distributable net income (DNI) calculation.

The trust itself still files a Form 1041 for its non-S corp income: interest on trust bank accounts, dividends from non-S corp holdings, capital gains from sales of non-S corp assets, and similar items. That income is subject to normal trust taxation rules: graduated rates, DNI, and the distribution deduction for amounts distributed to the beneficiary.

This is the opposite of the ESBT, where the S corporation income stays at the trust level and is taxed at a flat 37%. In a QSST, the S corp income leaves the trust entirely for tax purposes and lands on the beneficiary’s individual return, where it is taxed at whatever rate applies to the beneficiary.

QSST vs. ESBT

The two S corporation trust elections serve different planning needs. The choice between them depends on the trust’s terms, the number of beneficiaries, and the relative tax rates.

• QSST: S corp income taxed to the beneficiary at their individual rate. Must have a single current income beneficiary. All income distributed currently. Simpler return. No bifurcation required.
• ESBT: S corp income taxed at the trust level at 37%. Multiple beneficiaries are permitted. Discretionary distributions are allowed. More complex bifurcated return with separate S and non-S portions.

Choose a QSST when: the trust has one beneficiary, the trust terms require current income distribution, and the beneficiary’s marginal rate is lower than 37%. The tax savings can be substantial: a beneficiary in the 24% bracket saves 13 percentage points on every dollar of S corp income compared to the ESBT rate.

An ESBT is necessary when: the trust has multiple beneficiaries, the trust terms allow discretionary distributions or income accumulation, or the beneficiary is a nonresident alien (the QSST requires the beneficiary to be a U.S. citizen or resident). Some trust instruments simply do not meet the QSST structural requirements, leaving the ESBT as the only option.

Making the election

The QSST election is made by the beneficiary (or the beneficiary’s legal representative), not by the trustee. This is a common point of confusion. Many practitioners assume the trustee files the election, but §1361(d)(2)(B) assigns that right to the beneficiary. The election must be filed within the specified period: generally two months and 15 days after the trust first acquires S corp stock, or the beginning of the first tax year for which the election is to be effective.

A late or missed election can be corrected under administrative relief procedures if certain conditions are met, but timely filing avoids the uncertainty and expense of seeking relief. We prepare the election statement and coordinate with the beneficiary (or their representative) to ensure it is executed and filed within the deadline.

The election can be revoked only with IRS consent, and once revoked, the trust cannot make a new QSST election for the same S corporation without IRS approval. Converting from a QSST to an ESBT (or vice versa) is possible but requires careful timing to avoid a gap in eligibility that could terminate the corporation’s S election.

Death of the beneficiary or trust termination

When the QSST beneficiary dies, the trust’s status as an eligible S corporation shareholder does not continue automatically. The trust has a two-year window under §1361(c)(2)(A)(ii) during which it remains a permitted shareholder, but a new QSST or ESBT election must be made for the successor beneficiary (if the trust continues) within the applicable election period. If no timely election is made and the two-year window expires, the trust becomes an ineligible shareholder and the corporation’s S election terminates.

If the trust terminates during the beneficiary’s lifetime, all assets, including the S corp stock, must be distributed to the beneficiary. This is a structural requirement of the QSST, and the trust document should already require it. Once the stock is in the beneficiary’s hands directly, no trust election is needed.

These transition events require timely action. We monitor the deadlines and ensure the necessary election or transfer is completed before the window closes, preserving the S election for the corporation and its other shareholders.

What we need to open a matter

• Trust document (confirming single-beneficiary structure and mandatory income distribution)
• Trust EIN
• S corporation K-1 received by the trust (Schedule K-1, Form 1120-S)
• QSST election statement (if previously filed)
• Beneficiary information: name, SSN, and contact details
• All other trust income statements: 1099s, brokerage statements, bank interest
• Prior year Form 1041
• Beneficiary’s prior year Form 1040 (for coordination of S corp income reporting)

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