An Employer Identification Number (EIN) is a nine-digit tax identification number issued by the Internal Revenue Service to businesses and organizations. If you have an EIN, you can use it as part of your identification and background information when you rent a building or office space for your business. An EIN works for renting business accommodations in much the same way that a Social Security Number (SSN) works for an individual renting an apartment. When you provide your EIN, your landlord may run a check against your business' credit history before deciding to rent to you.
Search for your business space. Ask the landlord if it accepts an EIN for the application, explaining that the space will be used for business purposes. This is especially important if you are renting space in a residential area -- letting your landlord know that you'll be using the space for business helps you ensure that the space is zoned correctly to legally run a business.
Fill out the application, writing your EIN instead of your SSN. If your business credit history is poor or non-existent, your landlord may also require a personal guarantee, in which case you will have to supply your SSN as well.
Give the application to your landlord and wait for the application to be approved. Typically, you should hear back within a few days.