What Happens to Your QSBS When You Tender Some of Your Shares

Selling shares through a tender offer does not, by itself, preserve or destroy qualified small business stock treatment. A completed tender generally creates a current disposition of the shares acquired by the purchaser, and those shares must be tested lot by lot under Section 1202 as of closing. Shares not sold generally keep their separate acquisition dates and continue their holding periods. The outcome can still change based on the buyer, transaction structure, issuer repurchases, recent option exercises, and state law.

This article provides general educational information, not individualized tax or legal advice.

The short answer: the tender format does not decide QSBS treatment

A tender offer is a process through which a company or another purchaser solicits shares on stated terms. It does not independently certify QSBS eligibility or determine the federal tax character of the resulting payment.

When tendered shares are accepted and the transaction closes, the holding period for those shares generally ends. Gain may qualify for a partial or full Section 1202 exclusion only if the shareholder, stock, issuer, holding period, and transaction satisfy the applicable requirements. Gain that is ineligible for the exclusion—or exceeds its limits—may remain taxable. Untendered shares generally continue separately. Tender-specific guidance likewise emphasizes that the answer depends on the particular lots, purchaser, issuer history, and transaction structure. Keystone Global Partners discusses these tender-specific distinctions.

Before tendering, analyze three separate questions:

1. Historical qualification: Did each share lot satisfy the original-issuance, issuer, gross-assets, active-business, and redemption requirements?
2. Transaction characterization: Who is purchasing the shares, how is the transaction funded, and how will the payment be treated for federal tax purposes?
3. Treatment of recognized gain: Is eligible gain excludable under Section 1202, currently taxable, or potentially deferrable under Section 1045?

This avoids a common mistake: treating “QSBS” as a permanent label attached to every share associated with a startup.

Run the QSBS test lot by lot before closing

Shares from different grants, exercises, purchases, conversions, or transfers can produce different results. Even identical shares of common stock may have different acquisition dates, adjusted bases, holding periods, and original-issuance histories.

Create one worksheet covering every lot that might be tendered:

Share lot and acquisition	Shares and adjusted basis	Qualification evidence	Closing-date assessment
Founder issuance: date, cash/property/services	Share count and adjusted basis	Purchase agreement, ledger, payment records	Holding period, intended lot instruction, preliminary status
Option exercise: grant and exercise dates, equity type	Shares issued and exercise-related basis	Grant, exercise notice, payment and issuance records	Holding period from the applicable stock acquisition date; preliminary status
Restricted stock: issuance and relevant tax dates	Shares and adjusted basis	Award, vesting and Section 83(b) records, if applicable	Applicable holding period and preliminary status
Converted security: predecessor and conversion dates	Converted shares and adjusted basis	Note, SAFE or preferred documents; cap table	Apply relevant carryover rules; flag unresolved issues

For each lot, determine whether:

• The seller is a taxpayer eligible to claim Section 1202 rather than a corporation.
• The stock was generally acquired at original issuance for money, qualifying property, or services.
• The issuer was a qualifying domestic C corporation at issuance.
• The issuer satisfied the applicable aggregate-gross-assets limit.
• The corporation met the qualified active-business requirements during the relevant period.
• Redemption activity did not disqualify the shares under the applicable statutory restrictions.

These are statutory requirements, not presumptions. The official preliminary text of Section 1202 addresses original issuance, eligible shareholders, C-corporation status, asset limits, active-business requirements, and issuer repurchases that can prevent shares from qualifying.

A company’s QSBS attestation or tax memorandum can be useful evidence, but it is not conclusive. The company may not know the shareholder’s acquisition method, transfers, basis adjustments, holding-period history, or prior exclusions from the same issuer.

Before relying on an exclusion, compare the statute applicable to the lot with the cap table, stock ledger, issuance documents, issuer support, and final tender agreement. If a material fact cannot be substantiated, classify the lot as unresolved rather than assuming that it qualifies.

Match the acquisition date to the correct holding-period rule and cap

Measure the holding period through the tender’s closing date, not its announcement date, election deadline, or the date instructions are submitted. A delay or acceleration in closing can therefore change the preliminary result for a lot approaching a statutory anniversary.

The acquisition date also determines which Section 1202 regime applies:

Acquisition-date category	Holding-period framework	Potential exclusion	Per-issuer limit described in supplied law
Stock acquired on or before July 4, 2025	Earlier statutory rules; generally more than five years	50%, 75%, or 100%, depending on the applicable historical acquisition window	Generally greater of the applicable $10 million limit, reduced by prior eligible gain, or 10 times basis
Stock acquired after July 4, 2025	Phased schedule beginning at three years	50% after three years; 75% after four years; 100% after at least five years	Generally greater of the applicable $15 million limit, reduced by prior eligible gain, or 10 times basis

The percentages, holding periods, and dollar limits above are described in the official preliminary codification of Section 1202. Because effective dates and historical acquisition windows control the result, the operative enacted text for the transaction year should be applied to each lot rather than treating the table as a substitute for a final legal determination.

For every lot, record:

• The legally operative acquisition date
• The expected and actual closing dates
• The applicable acquisition-date regime
• The potentially excludable percentage
• Adjusted basis in the shares sold
• Prior Section 1202 exclusions claimed for the same issuer
• Gain remaining after the percentage and per-issuer limit are applied

The shorthand that “QSBS becomes tax-free after five years” is incomplete. Holding time is only one requirement. Earlier-acquired stock can fall into different exclusion-percentage categories, while qualifying stock acquired under the newer schedule may receive a partial exclusion after three or four years. Original issuance, issuer qualification, active-business compliance, transaction character, and the per-issuer cap still matter.

A partial tender usually separates sold shares from retained shares

A partial tender generally affects the shares actually purchased. The accepted shares are tested as of closing, while untendered shares retain their own acquisition dates and ordinarily continue their holding periods. A completed sale ends the holding period of the shares sold, not every share the seller owns.

Consider a founder with two lots:

• An older lot acquired directly from the corporation at original issuance
• A recently acquired lot arising from a later equity transaction

The founder instructs the tender agent to sell only part of the older lot. At closing:

• The accepted portion of the older lot is tested separately under Section 1202.
• The unsold portion of that lot continues with its existing acquisition date and holding period.
• The newer lot is not treated as sold merely because the founder participated in the tender.
• Any later disposition of the retained shares requires its own closing-date analysis.

Retained shares are not unconditionally protected. Defined issuer-redemption rules and other qualification failures may still matter. That does not mean every later repurchase automatically disqualifies retained stock; the relevant statutory period, parties, amount, and transaction history must be examined.

Specific-lot instructions should follow the tender agent’s procedures. Identify the intended lot using the certificate or ledger entry, issuance date, grant or exercise reference, share count, or another accepted identifier. Preserve the submitted instruction and obtain a final confirmation showing whether the requested identification was accepted.

Proration can change the result. If the offer is oversubscribed, the purchaser may acquire fewer shares than the holder requested. The settlement records—not the original election alone—should be used to determine the number and identity of the shares actually sold.

Buyer identity changes the analysis

The first structural question is: Who is acquiring the shares?

Transaction	Structural question	QSBS issue	Separate tax issue
Arm’s-length third-party purchase	Are unrelated investors the legal purchasers?	Test each sold lot under Section 1202	Determine amount realized, basis, holding period, and gain
Issuer-funded repurchase	Is the company purchasing its own shares?	Historical or current redemption activity may implicate Section 1202 restrictions	Determine whether general redemption rules produce sale-or-exchange, dividend, or other treatment
Exercise followed by immediate sale	Are options exercised to provide shares for the tender?	Newly issued stock may lack sufficient holding history	Separate exercise or vesting income from later stock-sale gain

An issuer-funded repurchase raises two distinct questions.

First, did the issuer’s repurchase activity affect QSBS qualification? Section 1202 contains restrictions involving certain purchases from the shareholder or related persons and certain significant redemptions during defined periods around issuance. The relevant timing, parties, and size of the repurchase must be tested; the mere existence of a buyback is not enough to state the result.

Second, how is the current payment characterized? A company redemption is not automatically equivalent to an arm’s-length third-party purchase. Ownership changes and other transaction facts may determine whether the payment receives sale-or-exchange, dividend, or another form of treatment. That question should be resolved before calculating a Section 1202 exclusion.

A tender price above the company’s Section 409A valuation also does not have an automatic characterization. Commentary identifies uncertainty over whether a premium may be treated as compensation or stock-sale gain depending on the purchaser, funding, pricing process, employment relationship, securities, and documents. Those are possible outcomes, not a complete or definitive characterization rule. Forbes discusses this uncertainty and the distinction between company-funded and outside-investor tenders.

Review the offer for:

• The purchaser’s legal identity
• The source of funds
• Eligible sellers and securities
• Whether options may be exercised in connection with the tender
• Price and pricing mechanics
• Individual and aggregate share limits
• Oversubscription and proration procedures
• The expected closing date
• Conditions that could delay or terminate the transaction

Recently exercised options may not have enough stock holding history

Holding an option is generally not the same as holding the stock acquired through exercise. An employee may have held an option for years but own the resulting stock for only a short period before tender closing. The recently issued stock must be evaluated using its applicable acquisition date rather than automatically using the option-grant date.

Keep three events separate:

1. The option is granted and may vest over time.
2. The option is exercised and stock is issued.
3. The stock is sold through the tender.

Income arising from exercise or vesting does not become QSBS-excludable gain merely because the resulting shares are sold through a tender. Section 1202 concerns eligible gain from a sale or exchange of qualifying stock; it does not convert an ordinary compensation component into qualifying stock-sale gain. Standard equity-compensation rules continue to apply when options are exercised to obtain shares for an immediate tender sale, as the Forbes tender-offer analysis notes.

Identify the equity type and preserve:

• The grant notice and equity plan
• Vesting records
• Exercise notices and payment evidence
• Stock-issuance and ledger records
• Section 83(b) election records, where relevant
• Basis calculations
• Tax forms and withholding records
• Tender elections and settlement confirmations

ISO, NQSO, RSU, and restricted-stock outcomes depend on more than the label. Exercise timing, vesting, disposition timing, payroll reporting, and the transaction’s mechanics all require fact-specific analysis.

If the sale is early, evaluate a Section 1045 rollover immediately

If qualifying QSBS is sold before reaching the desired Section 1202 threshold, Section 1045 may permit a noncorporate taxpayer to defer eligible gain rather than recognize all of it immediately.

Section 1045 allows taxpayers to defer gain from QSBS held for at least six months by rolling the gain into another QSBS Keep the good tax planning rolling: Section 1045 rollover of QSBS | Our Insights | Plante Moran. The closing date—not the tender announcement or election date—starts that investment window. Because the supplied materials do not include current official Section 1045 text, these requirements should be checked against the law and filing guidance applicable to the sale year before implementation. A detailed Section 1045 analysis explains the stated ownership, timing, replacement-cost, basis, and election requirements.

Section 1045 is a deferral, not an immediate permanent exclusion. Under the cited analysis, deferred gain reduces the basis of the replacement shares and may be recognized when those shares are later sold. Full deferral generally requires sufficient qualifying replacement cost measured against the amount realized; reinvesting only the gain should not be assumed to defer the entire gain.

The replacement stock and issuer must independently satisfy the applicable QSBS requirements. Carrying over a holding period does not cure an ineligible issuer, excluded business, failure of the active-business test, or another defect in the replacement shares. A rollover therefore does not guarantee that a later sale will qualify for a Section 1202 exclusion.

Evaluate this route before the tender closes. Identify possible replacement issuers, determine whether they will issue potentially eligible original-issue stock, plan the required investment amount, and arrange the documentation and return reporting. The investment window is too short to begin diligence casually after settlement.

Pre-closing checklist for a QSBS holder

Before submitting a tender election, create a written file covering the transaction, every possible share lot, and the available tax paths.

Confirm the offer terms

• Proposed purchaser and legal entity
• Funding source
• Expected closing date
• Eligible securities
• Tender price and pricing mechanics
• Individual and aggregate share limits
• Proration procedures
• Settlement and confirmation process

Map every potential lot

• Acquisition or exercise date
• Acquisition method
• Number of shares
• Adjusted basis
• Original-issuance status
• Holding period at expected closing
• Applicable statutory regime
• Intended specific-lot instruction
• Preliminary Section 1202 result

Gather shareholder records

• Stock certificates or electronic ledger entries
• Stock purchase agreements
• Grant, vesting, and exercise documents
• Conversion documents
• Section 83(b) records, where applicable
• Basis schedules
• Tender documents and submitted elections
• Final settlement confirmations

Request available issuer support

Ask for records or attestations addressing original issuance, domestic C-corporation status, aggregate gross assets at issuance, active-business history, capitalization, and repurchase activity. Treat that support as evidence rather than a guarantee.

Model the alternatives separately

Calculate the possible Section 1202 exclusion, currently taxable gain, possible compensation or distribution components, and any Section 1045 deferral as distinct scenarios. Account for prior exclusions from the same issuer and possible proration.

Check state treatment

Federal QSBS treatment does not ensure the same state result. State conformity varies, so federally excluded or deferred gain may remain partly or fully taxable in a relevant state. Carta’s Section 1045 guide notes the need to evaluate state conformity separately.

A tender offer is not an all-or-nothing QSBS event. Before closing, identify the buyer and structure, map every potential share lot to its acquisition date and supporting evidence, determine which shares will actually be sold, and analyze Sections 1202 and 1045 separately. Obtain transaction-specific tax and legal advice before making the election, particularly for issuer repurchases, recent option exercises, mixed lots, trusts, partnerships, proration, or a possible rollover.

Is every sale of five-year-old startup stock tax-free under QSBS?

No. The applicable holding period is only one requirement. The shareholder must be eligible, the stock must satisfy original-issuance rules, the issuer must meet the applicable C-corporation, gross-assets, active-business, and redemption requirements, and the transaction must produce eligible gain from a qualifying sale or exchange. Exclusion percentages and per-issuer limits may also restrict the benefit.

Do federal QSBS benefits automatically apply to state income tax?

No. State conformity must be checked for the seller’s residency and other relevant filing jurisdictions. Gain excluded or deferred federally may remain partly or fully taxable by a state.

Does a tender offer at a well-known startup prove that its employee shares qualify as QSBS?

No. News coverage may establish that a tender occurred, but it does not establish the issuer’s Section 1202 history or any shareholder’s lot-level eligibility.

TechCrunch reported that Decagon’s first tender offer allowed more than 300 employees to sell a portion of their vested shares Decagon completes first tender offer at $4.5B valuation. Neither report determines whether the shares involved qualified as QSBS.

Bloomberg also reported, citing sources, that many Anthropic employees retained their shares during a tender offer. Choosing to sell or hold does not itself establish QSBS status. Qualification still depends on the shareholder’s particular lots, the issuer’s history, the applicable acquisition-date regime, and the legal character of the transaction.