: The file must be created in a text-based application using ANSI encoding .

: Standard text for a 5-digit ZIP identifies the specific post office for delivery, while ZIP+4 adds four digits to identify a specific geographic segment like a city block or office building. zip format?

: "Print files" (files that include printer control characters) are not acceptable. Alternative Context: Mailing & ZIP+4

: Must end in .ZIP , .RPT, or .TXT and follow Windows naming conventions (no spaces).

If your query refers to physical mail rather than a digital tax file, "proper text" for a ZIP code follows these Postal Service standards :