When it comes to the world of business, there is one number that is as common as a social security number. It is known as an EIN, and it is used for all manner of business applications. One of the most common reasons individuals need an IRS EIN form is in order to file their taxes accurately. Without it, some business owners might not be able to file a return at all. A second, lesser known reason to apply for an EIN, however, is to open up a business bank account. If you are ready to open up a bank…