QSBS Tax Planning for Executives: Section 1202 Guide (2026)

If you joined a startup early — as a founder, C-suite hire, or senior officer who received equity at a low valuation — you may be sitting on one of the largest single tax breaks in the federal code. Qualified Small Business Stock (QSBS) under IRC § 1202 can shelter up to $15M of capital gain per taxpayer per company from federal income tax entirely. A CFO who exercised 500,000 ISOs at $0.20 when the company had $40M in gross assets, holds those shares five years, and sells at $30/share in an acquisition has a $14.9M gain. Under the full § 1202 exclusion, the federal capital gains bill is zero instead of roughly $3.5M.

This guide covers everything an executive needs to know: what qualifies, how OBBBA changed the rules in 2025, the California non-conformity trap, the Section 1045 rollover for situations where you sell too early, stacking strategies, and the disqualifiers that wipe out eligibility unexpectedly.

What qualifies as QSBS: the § 1202 requirements

To qualify for the § 1202 exclusion, all of the following must be true at the time the stock is issued:

1. Domestic C-corporation. The issuing company must be a U.S. C-corporation. S-corporations, LLCs taxed as partnerships, and limited partnerships do not qualify. Many startups are C-corps by formation; companies that converted from LLC or S-corp status only qualify for stock issued after the conversion date.
2. Gross assets within the limit. The company's aggregate gross assets must not exceed $50M at the time of issuance (or at any point since August 10, 1993) for pre-OBBBA stock. For stock issued after July 4, 2025, the OBBBA raised this threshold to $75M, with inflation adjustments beginning in 2027.¹
3. Active business in a qualified trade. At least 80% of the company's assets (by value) must be used in the active conduct of a qualified business. The statute excludes:
   — Professional services: health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics
   — Financial services and brokerage
   — Banking, insurance, financing, leasing, and investing
   — Farming; hospitality (hotels, restaurants); mining and natural resources
   Most technology, software, biotech, hardware, and e-commerce companies qualify. When in doubt, get a written confirmation from your tax advisor before planning around QSBS.
4. Original issuance only. The taxpayer must have acquired the stock at original issuance — not on the secondary market. This includes stock acquired through ISO or NSO exercise, a direct stock purchase at founding, or a restricted stock grant (assuming an 83(b) election ties the issuance date to the grant/exercise date).
5. Non-corporate taxpayer. Individuals, grantor trusts, S-corporations, and partnerships can claim the § 1202 exclusion. C-corporations cannot — which is why personal holding through an LLC or partnership treated as a pass-through still qualifies.

The exclusion mechanics: pre-OBBBA vs. post-OBBBA

The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, introduced tiered holding periods for stock issued after that date. Stock issued on or before July 4, 2025 follows the prior rules. If you're an executive with existing equity, you'll likely hold both categories.

The 28% rate on partially excluded gain matters. For post-OBBBA stock at the 3-year threshold (50% excluded), the effective federal rate on the gain is 50% × 28% = 14% — still better than regular LTCG rates of 20% + 3.8% NIIT (23.8%) at the top bracket. At 4 years (75% excluded), the effective rate is 25% × 28% = 7%. These rates assume the gain doesn't also trigger NIIT, which applies only to the taxable (non-excluded) portion.

AMT treatment. For stock acquired after September 27, 2010, the § 1202 exclusion does not create an AMT preference item — the full exclusion escapes both regular income tax and AMT.¹ OBBBA confirmed the same treatment applies to the new tiered exclusions for post-OBBBA stock.

How executives encounter QSBS

The § 1202 exclusion applies only to stock acquired at original issuance from the company. For executives, this happens in two primary ways:

Incentive Stock Options (ISOs) — early exercise with 83(b)

Option grants themselves are not QSBS. QSBS eligibility begins when you exercise the options — that's when you receive stock at original issuance. The 5-year (or 3/4/5-year post-OBBBA) holding period starts on the exercise date.

The leverage of early exercise with an 83(b) election: if your ISOs are exercisable before vesting and the company's 409A FMV is close to your strike price, you can exercise now, file an 83(b) within 30 days to lock in basis at current FMV, and start the QSBS holding period immediately — while the company's gross assets may still be below the $50M or $75M threshold. Waiting until post-IPO to exercise forfeits QSBS eligibility if the company has grown past the threshold by then. See Pre-IPO Executive Financial Planning for the full exercise timing analysis.

Restricted stock (actual shares, not RSUs)

If you received restricted stock (not RSUs — actual shares subject to a repurchase right), and you filed an 83(b) election within 30 days of grant, the QSBS holding period starts at the grant date. Shares granted when the company had ≤ $50M in gross assets that are held for 5 years from grant date qualify — even if the company exceeded the gross asset threshold years later.

RSUs (restricted stock units) do not qualify as QSBS in the same way. RSUs are contractual rights to receive shares in the future; the stock is "issued" at settlement (when the RSU vests and converts to actual shares), not at grant. By the time a typical late-stage company settles RSUs, its gross assets have almost always exceeded the threshold. RSU grants at Series D or later rarely produce QSBS-eligible shares.

The California non-conformity trap

California does not conform to IRC § 1202. The exclusion that eliminates up to $15M of gain at the federal level simply does not exist under California law — the full gain is taxable at California rates up to 13.3%.²

On a $15M federal exclusion, the California bill is approximately $2M (13.3% × $15M) even after you've paid zero federal tax. For executives domiciled in California, this changes the net math significantly:

QSBS is still highly valuable in California — the $3.57M federal tax savings remains real. But California residency changes a 100%-sheltered gain into a 13.3%-taxed gain. Other non-conforming states include Alabama, Mississippi, and Pennsylvania. New Jersey conformed beginning with tax years starting January 1, 2026.

Domicile planning around a known large QSBS exit has tax merit, but California has aggressive source-income rules and residency tests. Establishing non-California domicile requires more than renting a Seattle apartment — it requires demonstrating a genuine break in California residency well before the sale. Work with a California tax attorney, not just a financial advisor, if you're considering this.

Section 1045 rollover: if you sell before five years

What if you need to sell QSBS before the 5-year holding period — for liquidity, a tender offer, or a forced exit? IRC § 1045 allows you to defer the gain by reinvesting the proceeds into new QSBS within 60 days of the sale.³

Key § 1045 rules:

• Minimum hold: You must have held the original QSBS for more than 6 months (not 5 years — that shorter period triggers rollover eligibility).
• 60-day window: The entire sale proceeds must be reinvested in new QSBS within 60 days. Gain is recognized only to the extent the sale proceeds exceed the cost of the replacement QSBS.
• Holding period tacking (partial): The holding period of the replacement QSBS includes the first 6 months of the original stock's holding period for purposes of the § 1202 5-year clock. The period beyond 6 months from the original stock does not tack — you restart a new 5-year clock from the date of the new purchase, with a 6-month head start.
• Basis carryover: Your basis in the replacement QSBS is reduced by the amount of deferred gain, preserving the deferred tax as a future liability. The exclusion under § 1202 can still apply when you eventually sell the replacement QSBS if you hold it long enough.

The practical use case: a pre-IPO executive who received QSBS and participates in a tender offer 3 years in can roll the proceeds into QSBS at another qualifying startup within 60 days, deferring the gain and preserving the tax-free treatment for a future sale. This is a niche strategy but meaningful for angel-level executives who invest across multiple startups.

Stacking strategies: more than $15M per family

The $15M cap is per taxpayer per issuer. With coordination, a single family can multiply the available exclusion:

• Spousal allocation. If both spouses hold QSBS in the same company (each received or purchased separately, at original issuance), each can claim a separate $15M exclusion — up to $30M combined from one company. Community property states complicate this; speak with a tax attorney about structuring before issuance.
• Gifting to family members. Gifting QSBS to a spouse, children, or irrevocable trust can create additional $15M caps, but the recipient must hold the stock for the remaining period needed to complete the 5-year holding period from the original acquisition date. The holding period tacks to the recipient upon gift.
• Trusts and partnerships. Grantor trusts and partnerships can hold QSBS and pass the § 1202 exclusion through to the non-corporate beneficiaries. Non-grantor trusts are treated as separate taxpayers with their own $15M cap. Estate planning structures using QSBS alongside GRATs, SLATs, and ILITs can amplify the exclusion while removing the stock from the taxable estate.

Common disqualifiers

QSBS eligibility can be destroyed before you sell by events that don't appear on most executives' radar:

The redemption rule

IRC § 1202(c)(3) provides that stock is not QSBS if the issuing company has made significant redemptions of its stock from the holder (or a related person) within 2 years before or after the issuance. Separately, § 1202(c)(3)(B) disqualifies stock if the company redeemed "significant" amounts of its own stock from any stockholder in the year before or after issuance. Companies that run share buybacks — even modest ones — around the time of a new issuance may inadvertently disqualify the newly issued shares. This is more relevant for later-stage private companies with secondary transactions than for seed-stage startups.

Corporate structure changes

A company that converts from S-corporation or LLC to C-corporation only creates QSBS-eligible stock from the conversion date forward. Stock representing pre-conversion ownership interests does not qualify. An executive who received equity before a corporate conversion and never had the instruments reissued in C-corp form may not hold QSBS at all.

The gross assets test is measured at issuance

If the company exceeded the $50M gross asset limit (pre-OBBBA) or $75M limit (post-OBBBA) before your stock was issued, your stock does not qualify — even if the company was under the limit at an earlier date when you were hired. For Series D or later-stage executives whose stock was issued after multiple large funding rounds, the gross asset test is frequently the disqualifier. The test is applied at the time of issuance, not at the time of sale.

Industry exclusions

Consulting, financial services, health, and legal businesses are explicitly excluded. Many founders discover this applies to their company well after they've built a plan around the QSBS exclusion. "Technology platform" companies with service-heavy revenue models may be in a gray zone — get a qualified legal opinion, not just an informal advisor view.

QSBS planning checklist for executives

1. IRC § 1202 as amended by OBBBA (One Big Beautiful Bill Act, signed July 4, 2025). Pre-OBBBA: 5-year hold for 100% exclusion, $10M cap (or 10× basis), $50M gross assets threshold. Post-OBBBA (stock issued after July 4, 2025): tiered 50%/75%/100% exclusion at 3/4/5-year hold, $15M cap (indexed from 2027), $75M gross assets threshold (indexed from 2027). No AMT preference item for stock acquired after September 27, 2010 (IRC § 57(a)(7)). Non-excluded gain taxed at 28% per IRC § 1(h)(7). law.cornell.edu/uscode/text/26/1202.
2. California Revenue and Taxation Code § 18152.5 — California does not conform to the IRC § 1202 QSBS exclusion. Full capital gain taxable at California rates (top marginal 13.3%). Other non-conforming states as of 2026: Alabama, Mississippi, Pennsylvania. New Jersey conformed effective January 1, 2026. See also FTB Publication 1005 (California taxation of capital gains). ftb.ca.gov.
3. IRC § 1045 — rollover of gain from QSBS. Minimum 6-month hold on original QSBS; reinvestment in replacement QSBS within 60 days; gain recognized only to extent sale proceeds exceed cost of replacement. Holding period tacking: first 6 months of original stock's holding period counts toward new stock's § 1202 5-year clock. law.cornell.edu/uscode/text/26/1045.
4. IRS Rev. Proc. 2025-32 — 2026 inflation adjustments. LTCG rates: 0% / 15% / 20% (20% rate at $533,400 single / $600,050 MFJ). NIIT 3.8% above $200,000 single / $250,000 MFJ. Top ordinary rate 37%. IRS Rev. Proc. 2025-32 announcement. Grant Thornton overview of OBBBA QSBS changes: grantthornton.com — Section 1202 benefits. Hanson Bridgett analysis — timing considerations: hansonbridgett.com — QSBS after OBBBA.

QSBS exclusion amounts and holding periods per IRC § 1202 as amended by OBBBA (July 4, 2025). State conformity as of May 2026. § 1045 rollover per IRC § 1045 and Treas. Reg. § 1.1045-1. California non-conformity per CA R&TC § 18152.5. Values verified May 2026.