When a company whose stock you own gets bought out, your shares are converted into cash, shares of the acquiring company, or some combination of the two, at a price usually set well above where the stock was trading before the deal became public. The conversion happens automatically if you hold through a brokerage, and the type of payment you receive drives everything that follows, especially your tax bill. Here is what happens when a stock you own gets bought out, step by step.
What You Actually Receive
The merger agreement specifies what each share converts into. That payment is called the “consideration,” and it comes in one of three forms.
In an all-cash deal, every share becomes a fixed dollar amount at closing. If the agreement says $45.00 per share, that is what you get, regardless of what the acquirer’s stock does between announcement and closing. The value is locked in the moment the terms are public.
In an all-stock deal, your shares are exchanged for shares of the acquiring company at a set ratio. A fixed ratio might give you 0.5 shares of the acquirer for each share you hold, in which case the dollar value moves with the acquirer’s price until closing. A floating ratio adjusts the number of shares to hit a target dollar value. Either way, you end up as a shareholder of the combined company.
Many deals mix the two: some cash and some stock per share, for example $20.00 in cash plus 0.25 shares of the acquirer. Mixed deals often let you elect all cash or all stock, but those elections are subject to proration. If too many shareholders pick cash, some of those requests get filled with stock instead, so the acquirer’s total cash outlay stays within budget.
Why the Price Usually Jumps
Acquirers almost always pay more than the target’s pre-announcement price. Research covering decades of U.S. public-company acquisitions puts the average premium at roughly 30 to 40 percent above the stock price before the deal became public. That is why a target’s stock typically leaps on announcement day. After the jump, it usually settles a bit below the offer price, and that small gap reflects the risk that the deal falls through before closing.
How and When You Get Paid
Between the announcement and the closing date, you still own your shares. You can hold and wait for the payout, or sell on the open market if you would rather cash out early. Straightforward acquisitions often close in three to six months. Deals that draw antitrust scrutiny from the DOJ or FTC can take considerably longer.
Before closing, the target’s board sends shareholders a proxy statement filed with the SEC laying out the deal terms and the board’s recommendation. Most mergers need a majority vote from the target’s shareholders to proceed.
The Exchange Mechanics
A third-party financial institution called the exchange agent handles the actual conversion. If you hold through a brokerage account, this is automatic. Your old shares disappear and the cash or new shares appear in your account within a few business days of closing. You do not need to do anything.
If you still hold paper stock certificates, that is different. The exchange agent will send you a Letter of Transmittal. You have to fill it out and mail it back with your original certificates. Payment does not go out until both are in hand, so any delay on your end delays your money.
Delisting and Your Open Orders
Once the deal closes, trading in the target’s stock stops. The formal delisting from Nasdaq or the New York Stock Exchange takes effect 10 days after the exchange files Form 25 with the SEC, but as a practical matter, you cannot buy or sell after the closing date.1Securities and Exchange Commission. Final Rule: Removal from Listing and Registration of Securities Pursuant to Section 12(d) of the Securities Exchange Act of 1934
Any open orders on the stock, including limit orders, stop-loss orders, and good-til-canceled orders, are automatically canceled when the corporate action takes effect. If you had a trailing stop set as a safety net, it is gone. Check your account after the announcement so you are not relying on orders that will never fire.
Fractional Shares in Stock Deals
Exchange ratios rarely produce whole numbers. If you own 77 shares and the ratio is 0.4, the math gives you 30.8 shares, and the acquirer will not issue eight-tenths of a share. You get whole shares plus cash for the fractional piece, calculated at the acquirer’s market price around the closing date. The IRS treats that cash-in-lieu payment as a sale of the fractional share, so you recognize a capital gain or loss on just that sliver.2Internal Revenue Service. PLR-100272-25 (Letter Ruling)
If You Never Claim the Money
If you never submit your Letter of Transmittal or the exchange agent cannot reach you, the payout does not vanish. Unclaimed funds are held for a period specified in the merger agreement, often one to three years, then typically turned over to the acquiring company. Eventually, state unclaimed-property laws kick in and the money escheats to the state where the shareholder was last known to reside. You can still recover it through that state’s unclaimed-property process, but the longer you wait, the more paperwork it takes.
What You Owe the IRS
How the deal is taxed depends on what you receive. A cash buyout can trigger a large tax bill in the year the deal closes. A stock-for-stock deal can let you defer taxes indefinitely.
All Cash: Fully Taxable Right Now
An all-cash buyout is a straight sale. You subtract your cost basis, meaning what you paid for the shares plus any adjustments, from the cash you receive. The difference is your capital gain or loss. Shares held more than a year qualify for long-term capital gains rates, topping out at 20 percent for the highest earners. Shares held one year or less are taxed at your ordinary income rate.3Internal Revenue Service. Topic No. 409, Capital Gains and Losses
Your broker reports the gross proceeds on Form 1099-B. You calculate the actual gain or loss on Form 8949 and Schedule D.4Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets If you owned shares in multiple lots bought at different times and prices, each lot is calculated separately.
All Stock: Often Tax-Free for Now
When you receive only stock in the acquirer, the exchange often qualifies as a tax-free reorganization. Under Section 354 of the Internal Revenue Code, no gain or loss is recognized when you swap stock in one company for stock in another as part of a qualifying reorganization.5Office of the Law Revision Counsel. 26 U.S. Code 354 – Exchanges of Stock and Securities in Certain Reorganizations The transaction has to meet one of the structural tests in Section 368, which generally requires the acquirer to use its own voting stock and gain control of the target.6Office of the Law Revision Counsel. 26 U.S. Code 368 – Definitions Relating to Corporate Reorganizations
The benefit is deferral, not forgiveness. Your old cost basis carries over to the new shares, and your holding period tacks on.7Office of the Law Revision Counsel. 26 U.S. Code 1223 – Holding Period of Property If you bought the original shares three years ago for $20 each, the new shares inherit that $20 basis and the three-year clock. You owe nothing until you sell.
Mixed Deals: Partially Taxable
When a deal pays you both cash and stock, the cash portion is called “boot” and triggers immediate gain recognition. Under Section 356, the gain you must recognize equals the cash received, capped at your total realized gain on the transaction.8Office of the Law Revision Counsel. 26 U.S. Code 356 – Receipt of Additional Consideration So if your realized gain is $15 and you received $5 in cash, you recognize $5 now, and the other $10 stays deferred in the new stock. If your realized gain is $15 and you received $15 or more in cash, you recognize the full $15.
The basis of your new shares adjusts under Section 358: start with your old basis, subtract the cash received, and add back any gain you recognized.9Office of the Law Revision Counsel. 26 U.S. Code 358 – Basis to Distributees Your broker will issue a 1099-B covering the cash portion, but tracking the adjusted basis on the new stock is on you.
One wrinkle worth flagging. If the cash payment has “the effect of a dividend” under Section 356(a)(2), the IRS can reclassify some or all of your recognized gain as dividend income rather than capital gain. In practice, this mainly matters for shareholders who owned a significant percentage of the target. For a typical retail investor with a small position, boot is almost always treated as capital gain.
If You Hold Options or RSUs
Equity compensation is not treated the same as plain stock. Vested stock options and vested restricted stock units generally convert into the merger consideration just like regular shares. Unvested awards are the interesting case, and the answer sits in your grant agreement together with the merger terms.
Common outcomes for unvested RSUs include:
- Accelerated vesting, where all unvested units vest at closing and you receive the merger consideration for them, triggering ordinary income.
- Rollover into equivalent awards in the acquirer’s stock, preserving your original vesting schedule.
- Cash-out at the deal price or a discount, taxed as ordinary income in the year you receive it.
- Outright cancellation with no payment, which is rare but possible.
Your grant agreement almost certainly has a change-in-control provision spelling out which of these applies. Read it before the shareholder vote. If your unvested RSUs accelerate the same year you receive a large cash payout for vested shares, the combined income can push you into a higher bracket, which is worth planning around with a tax advisor.
If You Think the Price Is Too Low
You are not required to accept whatever the board negotiates. Appraisal rights let you ask a court to independently determine the fair value of your shares instead of accepting the merger price. The court’s number might come in higher or lower than the deal price, so it is a genuine gamble. The procedure is governed by the corporate law of the state of incorporation, and the requirements are strict: a written objection before the vote, a vote against the merger or an abstention, and a court petition filed within a tight deadline after closing.
Between legal fees, expert valuation witnesses, and a process that can run for years, appraisal is mostly a tool for institutional holders. For most retail shareholders, the simpler exit if you dislike the price is selling on the open market before closing.
Shareholder class actions alleging the board breached its fiduciary duties are also common in public-company mergers. Most settle for additional proxy disclosures or minor deal tweaks and rarely kill a deal. If one succeeds, you typically receive a small payment as a class member by submitting a claim form.
What to Do When a Deal Is Announced
Doing nothing is a legitimate choice if you are comfortable with the terms, but a few steps are worth taking early. Read the merger agreement or the summary in the press release so you know what kind of consideration you are receiving and whether you have an election. Check whether you hold any physical certificates, since those require action from you. Review your open orders on the stock, because they will be canceled at closing. And if the deal includes stock in the acquirer, take a close look at that company, because you are about to become one of its shareholders whether or not you would have chosen to buy in on your own.