When a company you own stock in gets bought out, your shares are converted into whatever the buyer agreed to pay, and you have little say in the matter once the deal closes. That payment can be cash, shares in the acquiring company, or some mix of the two. Cash triggers taxes right away; an all-stock swap often lets you defer them. Most publicly announced deals take three to nine months to finalize, and your shares keep trading during that stretch, usually at a small discount to the announced price.
What You’ll Receive for Your Shares
The merger agreement spells out exactly what shareholders get for each share they own. Lawyers call this the “consideration,” and its form drives everything else, from how much you net to when the IRS wants its cut.
Cash
The simplest outcome. You receive a fixed dollar amount per share. If the agreement says $50 per share, every shareholder gets $50 regardless of what happens to the acquirer’s stock price between announcement and closing. Cash deals give you immediate liquidity and trigger a fully taxable event in the year the money hits.
Stock in the Acquiring Company
Instead of cash, you receive shares in the buyer. The merger agreement sets an exchange ratio dictating how many new shares you get for each old share. A fixed ratio locks in the share count (say, 0.8 acquirer shares per target share) regardless of price swings. A floating ratio adjusts the share count so the total dollar value hits a specific target on closing day. All-stock swaps often let you defer capital gains taxes entirely until you sell the new shares.
A Mix of Cash and Stock
Many deals split the payment. You might receive $20 in cash plus 0.4 acquirer shares for each share you own. The tax treatment splits along with it: the cash side is taxable now, and the stock side may qualify for deferral. Mixed deals also frequently cap the total cash or stock the buyer will issue. Shareholders can sometimes elect their preference, but if too many pick the same side, proration scales everyone’s election back.
Contingent Value Rights
Some deals tack on contingent value rights, or CVRs. These are essentially IOUs tied to future milestones and show up most often in pharmaceutical acquisitions, where an extra payment kicks in if a drug clears a clinical trial or wins regulatory approval. CVRs can also be tied to revenue targets. If the milestone never happens, the CVR expires worthless. If it does, you receive an additional cash payment, taxable when received.
How and When the Payment Reaches You
The path from announcement to payment depends on whether the buyer structures the deal as a tender offer or a statutory merger. Either way, the acquirer ends up with full control and your old shares cease to exist.
Tender Offers
In a tender offer, the acquirer goes directly to shareholders and asks them to sell at the offered price. Federal securities rules require the offer to remain open for at least 20 business days.1GovInfo. 17 CFR 240.14e-1 – Unlawful Tender Offer Practices Once enough shareholders tender to meet the minimum threshold (often 50% or more of outstanding shares), the deal closes. Holdouts typically get squeezed out through a follow-up short-form merger at the same price, so refusing to tender rarely changes the result.
Statutory Mergers
A statutory merger requires a formal shareholder vote. The company mails proxy materials explaining the terms, and shareholders vote at a special meeting or submit ballots by mail or online. Most corporate charters require approval by a majority of outstanding shares. Because the threshold is measured against all shares outstanding rather than just those cast, not returning your proxy effectively counts as a “no.”
Once the vote passes and regulators sign off, the merger takes effect on the closing date. Your old shares are automatically converted into the right to receive the merger consideration by operation of law. No proactive step is required on your end for the conversion itself to happen.
The Mechanics of the Swap
A third-party exchange agent, usually a bank or trust company, does the mechanical work of swapping old shares for the new consideration. If your shares sit in a brokerage account, the process is essentially invisible. Your broker coordinates with the exchange agent, and one day you log in to find cash or new shares in place of the old position.
Physical stock certificates work differently. The exchange agent mails you a Letter of Transmittal with instructions to send in your certificates. You’ll need to sign and return the letter along with the certificates to receive payment. For a position of any significant value, the exchange agent or transfer agent will require a Medallion Signature Guarantee on your documents before processing.2Investor.gov. Medallion Signature Guarantees: Preventing the Unauthorized Transfer of Securities Most banks provide this service free to existing account holders, though some charge a fee if you don’t have an account there. Until you send the Letter of Transmittal back, your payment sits waiting with the exchange agent.
One cost that catches people off guard: many brokerages charge a mandatory reorganization fee when processing a merger or acquisition. These fees typically run $20 to $40 per event, and your broker deducts them automatically from your proceeds. Some firms waive the fee for customers with larger account balances.
What You’ll Owe in Taxes
The tax treatment of a buyout is the part most investors underestimate. It varies dramatically depending on what you receive and how long you held the shares, and getting it wrong on your return means either underpaying and owing penalties or overpaying because you forgot to account for your cost basis.
Cash Is Taxable Right Away
When you receive cash for your shares, the IRS treats the transaction like any other stock sale. You report the gain or loss on Form 8949 and Schedule D of your Form 1040.3Internal Revenue Service. Instructions for Form 8949 Your taxable gain is the cash received minus your cost basis (what you originally paid, including commissions).
The rate depends on how long you held the shares before the deal closed. Shares held one year or less generate short-term capital gains, taxed at your ordinary income rate. For 2026, that rate can reach 37% for single filers with taxable income above $640,600.4Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Shares held longer than one year qualify for long-term capital gains rates of 0%, 15%, or 20%, depending on your income.5Internal Revenue Service. Topic No. 409, Capital Gains and Losses
This one-year line matters. If you bought shares 11 months ago and the merger is about to close, the gap between short-term and long-term treatment can be tens of thousands of dollars on a large position. You can’t control the closing date, but it’s worth knowing where you stand.
Stock-for-Stock Swaps Can Be Tax-Free
When you receive only stock in the acquirer, the transaction often qualifies as a tax-free reorganization under the Internal Revenue Code.6Office of the Law Revision Counsel. 26 USC 368 – Definitions Relating to Corporate Reorganizations You owe no tax at closing. Your cost basis from the old shares carries over to the new shares.7Office of the Law Revision Counsel. 26 US Code 358 – Basis to Distributees Capital gains tax comes due when you eventually sell the acquirer’s shares, calculated using your original purchase date and cost basis in the target.
One exception: fractional shares. If the exchange ratio gives you 47.3 shares of the acquirer, you won’t receive the 0.3. The exchange agent aggregates everyone’s fractional entitlements, sells them on the open market, and sends you cash for your fraction. That small cash amount is immediately taxable as a capital gain.
Mixed Deals and the Boot Rules
In a mixed cash-and-stock deal that otherwise qualifies as a reorganization, the cash portion is called “boot.” The cash is taxable, but only up to the amount of your total gain on the transaction. If you paid $30 per share and the merger gives you $15 in cash plus acquirer shares worth $25, your total gain is $10 per share. Even though you received $15 in cash, you recognize only $10 of gain because that’s the ceiling. Your basis in the new shares adjusts accordingly. If your cost basis is high relative to the merger price, you may owe less on the cash component than you’d expect.
The Net Investment Income Tax
High-income investors face an additional 3.8% tax on top of the regular capital gains rate. The Net Investment Income Tax applies to capital gains from stock sales, including merger proceeds, when your modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married couples filing jointly.8Internal Revenue Service. Topic No. 559, Net Investment Income Tax A large buyout payout can easily push a household over these thresholds in the year of closing, so the effective top rate on long-term gains can reach 23.8% rather than the 20% many investors plan around.
Check the 1099-B
Your broker will issue a Form 1099-B reporting the gross proceeds from the merger.9Internal Revenue Service. Instructions for Form 1099-B (2026) One persistent problem: the cost basis reported on the 1099-B may be wrong, especially for shares purchased years ago, transferred between brokers, or acquired through dividend reinvestment plans. The IRS matches your return against the 1099-B, so if your broker reports a lower basis than your actual basis, you’ll appear to owe more tax than you do. Verify the basis yourself using your original purchase records and report the correct figure on Form 8949.3Internal Revenue Service. Instructions for Form 8949 Mixed deals add another layer of complexity in allocating basis between the taxable and non-taxable portions, and that’s one area where a tax professional genuinely earns the fee.
If You Hold Employee Stock or RSUs
Employee equity in the target company gets treated differently from ordinary brokerage shares. The specifics depend on your grant agreement and the terms negotiated between the two companies.
Vested stock options are typically either cashed out at the difference between the merger price and your exercise price, or converted into options in the acquirer on equivalent terms. Vested restricted stock units usually get paid out at the merger consideration price, the same as regular shares. Proceeds from vested employee equity are taxed as ordinary income, not capital gains, because the compensation element hasn’t been previously taxed.
Unvested equity is where things get complicated. The merger agreement may call for full acceleration (all unvested grants immediately vest at closing), conversion into equivalent unvested grants in the acquirer that continue on the original schedule, or partial or full cancellation. Many executive agreements include “double-trigger” acceleration, which requires both the acquisition and a subsequent involuntary termination before unvested equity accelerates. “Single-trigger” provisions accelerate vesting on the change of control alone, without any job loss. Your grant agreement and the company’s equity incentive plan control which outcome applies. If you hold incentive stock options and the deal changes them, the modification can disqualify them from ISO tax treatment, converting them to non-qualified options taxed at ordinary income rates. Your company’s HR or equity compensation team can confirm the specifics.
If Your Shares Are in a Retirement Account
Shares of the target held inside an IRA, 401(k), or other tax-advantaged account still get replaced by the merger consideration the same way: cash or new acquirer shares appear in the account. But no taxable event occurs at the time of the merger. The proceeds stay inside the retirement account and follow its normal tax rules. For a traditional IRA or 401(k), you’ll pay ordinary income tax when you eventually take distributions. For a Roth account, qualified distributions are tax-free.
One thing to watch: if a stock-for-stock merger drops acquirer shares into your 401(k), confirm that the new stock is an available investment option in the plan. Some plans allow only a limited menu of funds, and the acquirer’s stock may need to be liquidated and reinvested inside the plan. Your plan administrator can walk you through the timeline.
Your Rights as a Shareholder
You’re not powerless in this process. State corporate law grants shareholders specific rights when a merger is proposed, though these matter most in practice to large or institutional holders.
In a statutory merger, you’ll receive proxy materials and a ballot. Approval typically requires a majority of all outstanding shares, so choosing not to vote effectively counts as a “no,” even though the merger will almost certainly pass if the board is recommending it. Large institutional shareholders usually drive the outcome.
If you believe the buyout price undervalues the company, you can exercise appraisal rights, a legal process where a court independently determines the fair value of your shares. This remedy is available in many states for statutory mergers, but exercising it requires strict procedural compliance. You must deliver a written demand for appraisal before the shareholder vote, vote against the merger (or abstain), and not accept the merger consideration. If the court finds fair value to be higher, you receive the difference plus interest. Courts sometimes find fair value to be lower than the merger price, in which case you end up with less than you would have received by accepting the deal. Appraisal proceedings can drag on for years and involve significant legal costs, so this path is realistic mainly for investors with large positions and strong conviction that the price is wrong.
What Happens If You Do Nothing
In a statutory merger, your shares convert to the right to receive the merger consideration automatically, whether you vote or not and whether you submit paperwork or not. Doing nothing doesn’t cost you your money. It can delay getting it.
If your shares sit in a brokerage account, your broker handles everything and the proceeds appear on their own. The only real task is verifying your cost basis when tax season arrives.
Physical certificate holders face a tighter deadline. The exchange agent holds your merger consideration in trust until you return the Letter of Transmittal and your certificates. If you never respond, the funds sit with the exchange agent for a period (often one to three years, depending on the merger agreement) and are eventually turned over to your state’s unclaimed property office. From there, recovering the money means filing a claim with the state, which works but adds bureaucratic delay. If you’ve moved and the exchange agent’s letters never reached you, searching your state’s unclaimed property database periodically is worth the five minutes it takes.