I am about to open my own business. I have already applied for both my fictitious business license and my business license and waiting for them to arrive. Do I need to apply for an EIN? If so can I do it now or do I need to wait until I physically have the licenses? I already have an entity that would like to contract with me, starting in January and the need a W-9. I do not know if jumy Social Security number will suffice or if I need a EIN since the contract will be with my business not me as an individual