Greenmail Excise Tax — Section 5881

Greenmail is the corporate finance practice of a threatened company buying back its own stock at a significant premium from a hostile acquirer (the "raider") in exchange for the raider's agreement to stop pursuing a takeover. The raider profits handsomely by selling shares back to the company at above-market prices; the company's other shareholders are left holding stock that typically declines in value after the transaction, having effectively subsidized the raider's exit. Congress enacted 26 U.S.C. § 5881 (Chapter 54 of the IRC) in 1987 to discourage this practice: a 50% excise tax on any gain realized by a person who receives a "greenmail payment." The tax is imposed directly on the recipient — the corporate raider — making greenmail transactions enormously expensive for the party most benefiting from them. Because of § 5881 (combined with the general decline in hostile takeover activity and the rise of shareholder rights plans/"poison pills"), classic greenmail transactions have become extremely rare since the late 1980s. For the related excise on corporate stock repurchases broadly, see the stock buyback excise tax. For excise taxes on excess executive compensation in change-of-control transactions, see golden parachute excise tax (§ 280G).

Current Law (2026)

Legal Authority

• 26 U.S.C. § 5881(a) — Imposes a 50% excise tax on the "greenmail" received by any person; "greenmail" means any consideration transferred by a corporation to directly or indirectly acquire its stock from any shareholder who: (1) held the stock for less than 2 years before agreeing to the transfer, (2) made or threatened a public tender offer or otherwise to acquire or seek to acquire shares, and (3) acquired the stock in such offer or in anticipation of such an offer
• 26 U.S.C. § 5881(b) — Definitions: "greenmail" excludes any transaction pursuant to an offer made to all holders of the class of stock in the same terms; distinguishes greenmail from legitimate open-market repurchase programs available to all shareholders equally
• 26 U.S.C. § 5881(c) — The corporation making the greenmail payment is required to collect the 50% excise tax by withholding it from the payment and remitting it to the Treasury; if the corporation fails to do so, it is jointly and severally liable

Implementing Regulations

The IRS regulations implementing § 5881 are at 26 CFR Part 156 — Excise Tax on Greenmail. Key provisions:

• § 156.5881-1 — Confirms the 50% excise tax on gain from greenmail payments; the gain equals consideration received minus the adjusted basis of the shares; the tax applies whether the recipient is a corporation, partnership, trust, or individual
• § 156.6011-1 — Return requirement: every person liable for § 5881 tax must file Form 8725 (Excise Tax on Greenmail) with the IRS
• § 156.6071-1 — 90-day filing deadline: the return is due within 90 days of receiving the greenmail payment — a shorter window than most federal excise tax returns
• § 156.6081-1 — Automatic 6-month extension available on timely request; the extension does not defer payment, only filing
• § 156.6151-1 — Payment is due when the return is filed; the corporation withholding and remitting on behalf of the raider (§ 5881(c)) must transfer funds simultaneously with filing

Part 156 is almost entirely procedural — the substantive rule is in IRC § 5881 itself. Because greenmail transactions are extremely rare since the late 1980s, IRS has made no significant amendments to Part 156. Form 8725 is one of the least-filed excise tax returns; IRS does not publish annual statistics for it separately.

How It Works

Greenmail reached peak notoriety during the leveraged buyout era of the 1980s, when corporate raiders like Carl Icahn, T. Boone Pickens, and Saul Steinberg used greenmail tactics to extract large profits from targeted companies — most famously, Walt Disney Company paying Saul Steinberg $325 million to repurchase his shares at a premium, netting Steinberg approximately $60 million at the expense of ordinary shareholders. Congress enacted 26 U.S.C. § 5881 as part of the Tax Reform Act of 1987 specifically to deter this practice through a 50% excise tax on any greenmail gain. Three statutory conditions must all be met: the raider must have held the target stock for less than 2 years before the buyback (preventing short-term campaigns while not penalizing long-term shareholders); the raider must have made or threatened a public tender offer or proxy contest (passive investors who negotiate a share sale without acquisition threats don't necessarily trigger § 5881); and the buyback must not be available on equal terms to all shareholders — legitimate open-market repurchase programs and tender offers open to all shareholders are excluded.

The combination of § 5881 and subsequent corporate law developments has made traditional greenmail nearly obsolete. Delaware courts imposed stricter fiduciary duty scrutiny on greenmail transactions under Unocal v. Mesa Petroleum (1985) and its progeny — directors must show any defensive repurchase was proportionate to a genuine threat. Shareholder rights plans (poison pills) gave companies alternative defensive tools. And the 2023-2024 SEC reforms reducing the 13(d) disclosure deadline from 10 days to 5 days after crossing the 5% threshold further narrow the window for raiders to build hidden positions using derivatives before triggering disclosure requirements — reinforcing § 5881's deterrence effect by making the stake-building phase more costly and transparent.

How It Affects You

If you're a corporate finance or M&A professional: § 5881 is one reason classic greenmail transactions rarely occur today. When structuring defensive transactions, ensure any stock repurchase from an activist or hostile acquirer either (1) has been preceded by the shareholder holding for 2+ years, (2) is offered to all shareholders on equal terms, or (3) is structured as a leveraged buyout of the entire company. Any negotiated premium repurchase from a raider who held for less than 2 years and made acquisition threats is likely to trigger § 5881, making the transaction economically unworkable for the raider.

If you're an activist investor or fund: The 50% excise tax on greenmail gain effectively eliminates the classic greenmail strategy as a profit mechanism. Even if a company offers to buy your shares at a 30% premium, you'd keep only 50% of the gain after the excise — likely less than holding the stock for the long term. This is intentional: § 5881 ensures that activist campaigns must create actual corporate value (through operational improvements, strategic changes, or deal-making) rather than extracting ransom from defensive management.

If you're a corporate director or officer: Greenmail payments approved by the board face dual risk: § 5881 makes them expensive for the raider (reducing their effectiveness as defensive tools), and Delaware courts scrutinize them carefully under enhanced Unocal review. The combination means you need strong defensive justification and broad shareholder support for any non-ratable repurchase from an activist at a premium. In practice, most corporate defenses today use poison pills, staggered boards, and engagement with institutional shareholders rather than greenmail payments.

State Variations

§ 5881 is a federal excise tax; states do not impose equivalent greenmail taxes. However, state corporate law governs the fiduciary duty standards applicable to greenmail transactions. Delaware courts (governing most large U.S. corporations incorporated there) apply the enhanced Unocal standard: directors approving a defensive repurchase must show a reasonable belief that the acquisition threat was significant and that the response was proportionate. Non-Delaware states have similar but varying fiduciary standards.

Pending Legislation

No legislation addressing § 5881 is pending. The provision is rarely triggered given the practical extinction of classic greenmail transactions. However, the growth of short-term activism and concerns about "bumpitrage" (buying shares after a deal announcement and demanding a higher price) has prompted some discussion of whether § 5881's scope should be updated. No bills have been introduced.

Recent Developments

• Inflation Reduction Act § 4501 (2022) overlap: The IRA's new 1% excise tax on corporate stock repurchases (§ 4501, effective January 1, 2023) applies broadly to corporate buybacks — and would apply cumulatively with § 5881 on any qualifying greenmail transaction. A classic greenmail payment would trigger both the 50% § 5881 excise (borne by the raider) and the 1% § 4501 excise (borne by the corporation on the repurchase). Treasury's § 4501 regulations (finalized 2025) clarified that § 4501 applies to repurchases from specific shareholders, not just open-market programs, which confirms the overlap.
• SEC 13(d) reform and hidden stake-building: The SEC tightened beneficial ownership disclosure requirements in 2023-2024, reducing the time to file 13(d) reports from 10 days to 5 days after crossing the 5% threshold. These reforms reduce the window for activist raiders to build hidden positions using derivatives (total return swaps, call options) before triggering disclosure. Faster disclosure makes it harder for a raider to accumulate the large position needed to make greenmail threats credible — reinforcing § 5881's deterrence effect.
• Elliott Management / Salesforce (2022-2023): Elliott's high-profile campaign at Salesforce — where the activist took a large stake and pushed for operational changes — was structured around genuine long-term operational engagement, not greenmail. Elliott held shares for more than 2 years and pursued board changes and cost cuts. The campaign illustrates that modern activists are careful to structure their engagements to clearly avoid § 5881 exposure, typically by holding for the 2-year period and making general offers available to all shareholders.
• Section 5881 remains rarely triggered: No major IRS enforcement actions under § 5881 have been publicly reported since the provision took effect in 1987. The provision functions primarily as a structural deterrent — the tax is so punitive (50% of gain) that no rational raider would accept a greenmail payment structured to trigger it. The IRS does not publish § 5881 audit or collection data separately from other excise tax enforcement.