The "Brownfields Redevelopment Tax Incentive Reauthorization Act of 2025" proposes to amend Section 198(h) of the Internal Revenue Code of 1986, which governs the expensing of environmental remediation costs. The primary purpose of this legislation is to extend the tax incentive for businesses undertaking the cleanup of contaminated sites, commonly known as brownfields. Specifically, the bill modifies the eligible timeframe for expensing these costs, allowing for deductions on expenditures incurred after December 31, 2011, and before January 1, 2025, as well as those incurred after December 31, 2028. This amendment effectively reauthorizes the tax benefit for future remediation efforts, albeit with a temporary lapse for costs incurred between January 1, 2025, and December 31, 2028. The provisions of this Act are set to apply to all expenditures paid or incurred on or after December 31, 2024.