Specifications

The tax file number (TFN) algorithm is a mathematical formula that tests the validity of numbers quoted as TFNs. Its use in software is recommended as it will minimise TFN errors and may reduce the need for contact between your organisation or clients and the ATO.
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The accepted specifications and versions for the 2016-17, 2017-18, 2018-19 and 2019-20 financial years. You will be required to use these if you are developing software to lodge electronically. A list of validation tools has also been included.
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Final Electronic reporting specification Pay as you go (PAYG) withholding self-print (SPRINT) payment summary specification v5.3.2 has been released.  Due to the changes being minor and informational, only a clean version has been published.
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A final version of the Employee share scheme (ESS) annual report v3.1.1 specification is now available.
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A Final Pay as you go (PAYG) withholding where ABN not quoted annual report specification v1.2.4 has been released.  Due to the changes being minor and informational, only a clean version has been published.
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A Final electronic reporting specification Pay as you go (PAYG) withholding payment summary annual report (PSAR) specification v 13.0.2 has been released. Tracked and clean versions have been provided for your information.
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A Final Pay as you go (PAYG) withholding from interest, dividend and royalty payments paid to non-residents - annual report version 2.0.4 has been released.  Due to the changes being minor and informational, only a clean version has been published.
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A Final  Tax file number (TFN) declaration self-print specification version 1.1.4  has been released.  Due to the changes being minor and informational, only a clean version has been published.
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A Final Electronic reporting specification tax file number (TFN) declaration reporting version 4.0.1 has been released.  Due to the changes being minor and informational, only a clean version has been published.
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This specification is to be used when developing software for the printing of Employee share scheme (ESS) statement - employee summaries, commencing 2009–10 financial year.
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