Body Tax information, tools, and resources for businesses and self- employed. Employer ID Number (EIN) Employment Tax Estimated Tax Foreign Account Tax Compliance Act (FATCA) Prepare Your Taxes Business Tax Credits Deduct Expenses Calculate Your Employment Taxes Employment Taxes Excise Taxes Gift Taxes File or Pay Your Taxes Estimated Taxes Order Forms Online Electronic Federal Tax Payment System (EFTPS) Run Your Business Start a Business Operate a Business Close a Business Business Types Sole Proprietorship Someone who owns an unincorporated business by themselves. Partnership A relationship existing between two or more persons who join to carry on a trade or business. International Business Foreign businesses with activities in the U.S. or domestic businesses with activities outside the U.S. Corporation A legal entity that is separate and distinct from its owners. S Corporation Corporations that elect to pass corporate income, losses, deductions, and credits through to their shareholders for federal tax purposes. Limited Liability Company or LLC A corporate structure whereby the members of the company cannot be held personally liable for the company's debts or liabilities. Disaster Assistance and Emergency Relief Special tax law provisions may help taxpayers and businesses recover financially from the impact of a disaster, especially when the federal government declares their location to be a major disaster area.