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Dossier Legislative introduced 25-mar-2026
Bill introduced in Congress — not yet passed by either chamber, and not law.

Stop Subsidizing Giant Mergers Act

Key claim: The Stop Subsidizing Giant Mergers Act (S4185) proposes to eliminate or restrict federal tax subsidies associated with large corporate mergers, and has been referred to the Senate Committee on Finance.

Abstract

(S4185 · 119th Congress) Latest action (2026-03-25): Read twice and referred to the Committee on Finance.

Why this matters

Federal tax treatment of merger transactions (e.g., interest deductibility on acquisition debt, step-up basis, NOL usage) materially affects deal economics for large corporate combinations. A bill restricting these subsidies would raise the after-tax cost of mega-mergers, potentially dampening M&A volume and interacting with antitrust policy aimed at concentration. Status is early — introduced and referred to Senate Finance, with no markup or CBO scoring yet.

Source

Link

Briefing card

Stop Subsidizing Giant Mergers Act
Stage: introduced · congress · 25-mar-2026

The Stop Subsidizing Giant Mergers Act (S4185) proposes to eliminate or restrict federal tax subsidies associated with large corporate mergers, and has been referred to the Senate Committee on Finance.

Cross-references (0)

None recorded — doctrine links and citations appear here as scans and citation sweeps find them.

External: congress:119-s-4185:introduced

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