New York, South Carolina and Massachusetts are three states where the federal tax identification number is different from the state tax identification number. Business registration in these states can be get both numbers in one step, according to the Internal Revenue Service.
The federal tax identification number is used to identify a business and its registration. A majority of the states use the federal tax number alone. Business in New York, South Carolina and Massachusetts have the federal number in addition to the state number.
Tax identification numbers are similar to individuals' Social Security numbers. They're needed not only for paying taxes, but other parties, such as banks and vendors, may use them as well.