The IRS system records all address words in capital case letters. It uses abbreviations, here is an example:

Abbreviate directional names such as North, South, East, and West

Use the following directional abbreviations:

• Abbreviate North, South, East, and West as N, S, E, and W

• Abbreviate Northeast and Northwest as NE and NW

• Abbreviate Southeast and Southwest as SE and SW

Examples:

• Enter 123 North Green Street as 123 N Green St

• Enter 123 North Green Street Southwest as 123 N Green St SW

Abbreviate Road, Street, Drive, Avenue, etc.

Examples:

• Enter 123 Green Street as 123 Green St

• Enter 123 South Green Road as 123 S Green Rd

• Enter 123 Green Drive Northwest as 123 Green Dr NW

• Enter 123 Green Avenue as 123 Green Ave

• Enter 123 Green Lane as 123 Green Ln

• Enter 123 E Street as 123 E St

Entering Post Office Boxes

Enter as PO Box

Example:

• Enter Post Office Box 123 as PO Box 123