A tender offer is a public offer to buy shares—often from an acquirer, the issuer (buyback), or a special-purpose buyer—at a stated price or exchange ratio by a deadline. When you tender (sell into the offer) from a taxable brokerage account at Fidelity, Vanguard, Schwab, or E*TRADE, the tax flavor usually depends on whether you receive cash, stock, or a mix, and on how the deal is structured. This guide is about corporate equity tender offers on individual shares—not the separate product category of interval vs tender-offer funds.
Where proceeds land at filing: 1099-B basis adjustment basics. Account wrapper: Taxable brokerage account basics. Filing orientation: Filing taxes for beginners. Gain categories: Capital gains basics.
Cash vs stock consideration (educational map)
| What you receive | Typical consumer cue | Where it often appears |
|---|---|---|
| All cash for tendered shares | You sold the shares into the offer | Form 1099-B proceeds; basis and holding period from your lots |
| Stock of acquirer / issuer (share exchange) | You swap Target shares for Acquirer shares | May be nontaxable, partially taxable, or taxable per deal docs and Form 8937 |
| Cash + stock (mixed consideration) | Part sale, part exchange | Often partly taxable cash boot + basis allocation to new shares—confirm the prospectus / Form 8937 |
| Fractional leftover after exchange | Broker remits cash-in-lieu | Often a small taxable sale of the fraction (Merger cash-in-lieu basics) |
Always read the offer to purchase / merger prospectus, any Form 8937, and the broker’s corporate-action notice. Do not assume “tender” means the same tax result as a regular market sale—or as a nontaxable reorganization.
How cash tenders usually hit Form 1099-B
- You instruct the broker (or transfer agent) to tender N shares by the deadline.
- After settlement, cash hits your account; the broker typically reports proceeds on Form 1099-B for the tendered lots.
- Your cost basis and acquisition date still matter for short-term vs long-term gain on Form 8949 / Schedule D (1099-B basis adjustments).
- Partial tenders (only some shares accepted under proration) mean only accepted shares are sold; untendered or returned shares keep their old basis.
- Issuer buybacks run as tenders can look similar on 1099-B; still match lot IDs to the confirmation.
Inside a traditional IRA or 401(k), the tender usually is not an annual Schedule D event the same way; in taxable accounts it is.
Worked example: $12,000 cash tender into a 1099-B line
Jordan holds 200 shares of TargetCo with $8,000 total basis ($40/share), acquired more than a year ago in a Schwab taxable account. AcquirerCo announces an all-cash tender at $60 per share. Jordan tenders all 200 shares; the offer is not prorated. Schwab credits $12,000 cash.
Illustrative long-term capital gain ≈ $4,000 ($12,000 − $8,000). The 1099-B should show about $12,000 proceeds with covered-lot basis near $8,000 (confirm boxes). If Jordan mistakenly treated the $12,000 as a nontaxable “merger gift” with zero basis, Form 8949 would overstate income. If Jordan had instead received only Acquirer stock under a nontaxable reorganization (different deal), there might be no current 1099-B sale line on the whole-share exchange—only a later sale when Jordan sells Acquirer—plus possible cash-in-lieu on a fraction (Merger cash-in-lieu basics).
Practical habits
- Download the offer to purchase and any Form 8937 the week the deal closes.
- Decide whether you are tendering into cash, stock, or mix before the deadline—tax and liquidity differ.
- On cash tenders, reconcile 1099-B proceeds to the cash credit and to your lot spreadsheet.
- On stock or mixed deals, allocate basis to new shares and separate any cash boot from fractional cash-in-lieu.
- Watch corrected 1099-Bs through February–March before you lock the return.
- Index-fund holders: fund-level capital-gain distributions are a separate 1099-DIV topic (Mutual fund capital gain distribution basics).
Checklist
- Confirm cash vs stock vs mixed consideration in the official offer docs.
- Note the tender deadline, proration risk, and how many shares were accepted.
- Match 1099-B lines to tendered lots; fix basis mismatches before filing.
- Separate fractional cash-in-lieu from main cash consideration when both appear.
- Keep pre-deal confirms for holding-period proof on long-term lots.
- Ask a tax pro when Form 8937 and the broker statement disagree.
Educational only. Not tax, legal, or investment advice. Tender-offer tax treatment is deal-specific; verify with current IRS publications, the issuer’s Form 8937 / offer documents, Form 8949 / Schedule D instructions, and a qualified tax professional.