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Sales Tax Licence/Permit - When is it required and how can I make a use of it as a non-US resident selling in USA?
Sales tax permits come from the state in which your business is operating.  You need a business license first for them to issue you one. US sales taxes are collected by the business and remitted to the government, you need the permit in order to do this. A bigger question is whether it's legal for you to engage in business in the first place.  What is your visa status?