Mailing address for form 1120

The mailing address for filing Form 1120, U.S. Corporation Income Tax Return, depends on the type of corporation and its location. Here are the mailing addresses for different types of corporations:

Domestic Corporations:

• If the corporation is located in the United States, mail the return to: Internal Revenue Service 1111 Constitution Ave NW Washington, DC 20224-0024

Foreign Corporations:

• If the corporation is located outside the United States, mail the return to: Internal Revenue Service 1111 Constitution Ave NW Washington, DC 20224-0026

Corporations with a P.O. Box:

• If the corporation has a P.O. box, you can mail the return to: Internal Revenue Service P.O. Box 802551 Chicago, IL 60680-2551

Corporations with a Foreign Address:

• If the corporation is located outside the United States and has a foreign address, you can mail the return to: Internal Revenue Service Attn: Foreign Address 1111 Constitution Ave NW Washington, DC 20224-0026

Electronic Filing:

• You can also file Form 1120 electronically through the IRS's Electronic Filing System (e-file). The IRS accepts electronic filings for corporations with assets of $10 million or more.

Note:

• Make sure to sign and date the return, and include all required attachments, such as schedules and forms.
• If you are filing a paper return, use the correct postage and ensure that the return is postmarked by the due date to avoid late filing penalties.
• If you are filing electronically, ensure that you complete the filing process and receive a confirmation number before the due date.