Stop Tax Haven Abuse Act

[AI summary unavailable — showing source text] Stop Tax Haven Abuse Act This bill authorizes the Department of the Treasury to impose restrictions on foreign jurisdictions or financial institutions to counter money laundering and efforts to significantly impede U.S. tax enforcement. The bill amends the Internal Revenue Code to expand reporting requirements for certain foreign investments and accounts held by U.S. persons, establish a rebuttable presumption against the validity of transactions by institutions that do not comply with reporting requirements under the Foreign Account Tax Compliance Act, treat certain foreign corporations managed and controlled primarily in the United States as domestic corporations for tax purposes, treat swap payments sent offshore as taxable U.S. source income, require reporting of United States beneficial owners of foreign-owned financial accounts, impose additional requirements for third party summonses used to obtain information in tax investigations that do not identify the person with respect to whose liability the summons is issued (i.e., John Doe summons), and modify the rules for the taxation of inverted corporations (U.S. corporations that acquire foreign companies to reincorporate in a …