Get an Employer Identification Number from the IRS. If your LLC has more than one member, you will need this number so your LLC can pay federal and state taxes properly, hire employees, and open a company bank account.[13] You can apply for this number: (1) online[14]; (2) by contacting the IRS at (800) 829-4933; or (3) by completing and mailing in Form SS-4 to the address listed on the form.[15]
Since limited liability companies can be a pass-through entity, owners are taxed on their personal income. S-Corp shareholders are taxed personally. The S-Corp, however, is not. C-Corp income is taxed at the corporate level first, then again at the personal level. This is called "double taxation." Non-Profits are only taxed once and can write off most of their expenses. Sole Proprietors are taxed only on their personal tax return.

Unlike in many other Western countries, Canadian businesses generally only have one form of incorporation available. Unlimited liability corporations can be formed in Alberta "AULC", British Columbia "BCULC"[8] and Nova Scotia "NSULC". The aforementioned unlimited liability corporations are generally not used as operating business structures, but are instead used to create favorable tax positions for either Americans investing in Canada or vice versa.[9] For U.S. tax purposes the ULC is classified as a disregarded entity.
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