This bill, known as the "Stop Subsidizing Giant Mergers Act," aims to modify the Internal Revenue Code by ending the tax-free treatment of specific corporate reorganizations and property transfers involving large corporations. Its primary goal is to ensure that significant mergers and acquisitions do not benefit from tax deferral provisions currently available under the law. The legislation introduces new rules for acquisitive reorganizations , such as mergers and acquisitions, and for transfers of property to controlled corporations . Under these changes, transactions will lose their tax-free status if the combined average annual gross receipts of the involved corporations exceed $500 million over the preceding three-taxable-year period. This threshold will be adjusted for inflation in future years. However, the bill includes several exceptions to these new rules. Tax-free treatment would still apply if one corporation controls the other, or if a third corporation controls both, immediately before or after the transaction. Additionally, transactions are excepted if either the acquiring or acquired corporation (or all transferring corporations in the case of property transfers) meets the existing small business gross receipts test under Section 448(c)(1) of the Internal Revenue Code, ensuring smaller entities are not impacted.