When you are filing taxes for a business, requesting and receiving an employer identification number (EIN) is the easy part. Once you have your sole proprietor Tax ID number, or whichever kind of EIN you have, you will realize just how many rules you have to follow. Business taxes are different from personal taxes in many ways, including when it comes to filing for an extension. Here is what you should do if you need an extension for filing your business taxes, and what to do if you miss the deadline: Filing for an Extension for Business Taxes For personal…