Form 5472 is used by certain U.S. corporations with significant foreign ownership and foreign corporations engaged in a U.S. trade or business to report transactions with foreign or domestic related parties. This form helps the IRS ensure compliance with U.S. tax laws regarding international transactions.

U.S. corporations with at least 25% foreign ownership and foreign corporations engaged in a U.S. trade or business that have reportable transactions with a foreign or domestic related party.

It is used to report transactions between foreign owners and U.S. corporations or foreign corporations engaged in a U.S. trade or business to ensure compliance with tax laws.

It is due with the corporation's income tax return, typically on the 15th day of the fourth month after the end of the corporation's tax year.

No, a signature is not required according to IRS guidelines.