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In Mexico it works more or less the same: All payments are invoiced and signed with a Private/Public keypair unique for the person/company and provided by the government.

At the end of the year, you go into SAT (Mex IRS) page to file your taxes and they provide you with a list of your money Input and Output, and they tell you how much you owe in Taxes or how much you are owed by them.

You still can add other things that were missed by the system.

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