One exit, more than one exclusion
Section 1202 lets a qualifying shareholder exclude gain on the sale of qualified small business stock, up to a cap per taxpayer, per company. Because the cap belongs to each taxpayer, shares given to separate taxpayers, such as properly structured non-grantor trusts, can each carry their own cap. This tool shows how that can change the arithmetic of a sale.
Illustrated result
Illustrated difference in estimated tax
| Without planning | With stacking | |
|---|---|---|
| Taxpayers with their own cap | ||
| Gain excluded from federal tax | ||
| Estimated federal tax | ||
| Estimated state tax | ||
| Estimated total tax |
What the numbers leave out
The illustration is deliberately simple. It assumes:
- The company and the stock meet every Section 1202 requirement, including C corporation status, the gross asset test at issuance, the active business test, and original issuance.
- A married founder files jointly. On a joint return, spouses share one cap, so a spouse does not add a separate cap.
- Each trust is respected as a separate non-grantor taxpayer and is not combined with the others under the multiple trust rules of Section 643(f).
- Shares move to each trust by gift, which carries over the holding period and qualified status. A sale to a trust would not.
- At the 3 and 4 year tiers, the cap limits eligible gain before the exclusion percentage is applied, and the rest of the eligible gain is taxed at the §1202 rate.
- No prior exclusions from the same company, and gain spread evenly across all shares.
It does not model:
- Gift tax, use of lifetime exemption, or the valuation needed to support each gift.
- How trust income is taxed once distributed to beneficiaries, or how different states tax trusts.
- Alternative minimum tax, earnouts, escrows, installment sales, redemptions, or Section 1045 rollovers.
- Trust administration costs, trustee selection, or the non-tax purposes every trust needs.
Tax figures reflect federal law as understood in September 2026. Law and guidance change.
The arithmetic is the easy part
A stacking strategy only works if several things line up at once, often years before a sale. The stock has to qualify from the day it is issued. The trusts have to be drafted and administered as genuinely separate taxpayers with real purposes beyond tax. The gifts have to be documented, valued, reported, and reflected in the company's own records, consistent with its transfer restrictions and shareholder agreements.
That work usually sits with three different advisors, and it holds together best when they plan together.
Keeps the company's qualification intact and makes sure transfers are permitted and properly recorded.
Designs the trusts so they are respected as separate taxpayers and fit the rest of the family's plan.
Tracks basis and holding periods and reports the gifts and the eventual sale correctly.
Most problems we see are not bad strategy but small implementation gaps: a trust that was signed but never funded, a transfer papered as a sale, a trust unintentionally taxed as a grantor trust, or a plan built from general-purpose forms that were never designed with Section 1202 in mind. Any one of these can undo the benefit the plan was meant to deliver.
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Not legal or tax advice
This page and the illustration are for general educational purposes only. They are not legal, tax, accounting, or financial advice, and they are not a substitute for advice from qualified professionals who know your facts. The results are hypothetical, rest on the simplifying assumptions described above, and do not predict or guarantee any outcome. Whether Section 1202 applies, and whether any planning strategy is appropriate, depends on facts and law that this tool does not and cannot evaluate. Tax law changes, sometimes retroactively. Do not act or refrain from acting based on this page.
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