The U.S. Treasury Department has finalized new regulations to combat money laundering in residential real estate transactions, particularly targeting cash purchases made through legal entities like trusts and shell companies. These regulations require real estate professionals and investment advisers to report detailed information about such transactions, enhancing transparency and aiding law enforcement. The rules will take effect on December 1, 2025, for real estate transactions and January 1, 2026, for investment advisers, who will also be required to implement formal anti-money laundering programs. Treasury Secretary Janet Yellen emphasized the importance of these measures in preventing the exploitation of the real estate sector by criminals. The initiative is part of the Biden administration's broader strategy to address illicit financial activities, with strong support from transparency advocates. These developments come amid rising home prices, which are a significant issue in the current presidential campaign.