The Address for IRS Form SS-4 is an essential element when applying for an Employer Identification Number (EIN) from the Internal Revenue Service (IRS). This address is where the IRS will send all correspondence and official documents related to your EIN application. It is crucial to input the correct address to ensure smooth communication with the IRS throughout the process. There are primarily three types of addresses associated with IRS Form SS-4: 1. Primary Business Address: This is the physical location of your business or organization. It includes street name, number, city, state, and ZIP code. The primary business address must be a physical address and not a P.O. Box, as the IRS does not accept P.O. Box addresses for this purpose. 2. Mailing Address: This address may differ from the primary business address if you want to receive mail at a separate location. The mailing address can be a P.O. Box or any other address where you wish to receive correspondence from the IRS. 3. Prior EIN Address: This address is applicable when you are applying for a new EIN because your business structure has changed, or you have inherited or purchased an existing business that had an EIN. In this case, you should provide the previous EIN's address exactly as it was recorded with the IRS. When completing IRS Form SS-4, you will be required to enter the appropriate address fields accurately. The information should include the full street address, city, state, and ZIP code for each relevant address mentioned above. It is crucial to double-check these details to avoid any delays or complications in the EIN application process. In conclusion, the Address for IRS Form SS-4 is a critical component when applying for an EIN. It consists of the primary business address, mailing address (if different from the primary address), and prior EIN address (if applicable). Accuracy and attention to detail are vital to ensure successful communication and timely receipt of important documents from the IRS.