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Alternative minimum tax (AMT)
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Random Term
PTIN

Abbreviation of Preparer Tax Identification Number. Anyone who professionally prepares or assists in preparing federal tax returns for compensation must have a valid PTIN, which needs to be renewed each year. All Enrolled Agents certified by the IRS must also have a valid PTIN. For more information on PTINs and how to obtain and renew them, see the related section of the IRS website.



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