Refer to instructions on Form 1120-F for more information.
General Information
Office or place of business maintained in US
If the foreign corporation does not maintain an office or place of business in the U.S. and the checkbox on Page 1 is not marked, the due date of the tax return is adjusted to the 15th day of the sixth month after the end of the corporation's tax year.
In addition, if an extension is prepared, the application marks the field on Form 7004 for 1120-F filers who do not maintain an office or place of business in the U.S.
Corporation is not in US but has US bank account and paying electronically
Enter
X
if the foreign corporation does not have an office or place of business in the U.S., but does have a U.S. bank account and is using the Electronic Federal Tax Payment System (EFTPS) to pay the tax due. Select an EFT option for corporate filing instructions in Screen Letter.