Specifications

This specification is current at the latest date shown in the 'Summary of changes' but it may be amended at any time without prior notice. Only those persons and companies who have been sent copies by the Australian Taxation Office (ATO) will be notified of changes.
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The Item A3 calculator allows users to calculate the correct amounts for the A3 labels on the individual tax return. This will ensure they receive the correct amount of government super co-contribution.
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This document is provided to digital service providers for the purpose of obtaining and understanding the format and algorithm of the Australian business number (ABN). Highlights of the service are:
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This specification is to be used when developing software for the printing of Employee share scheme statement - employee summaries, commencing 2009-10 financial year.
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The Electronic funds transfer (EFT) code validation specification and test scenario allows for the enhancement of software products by incorporating official ATO EFT code validation rules.
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The Final Private health insurance report version 3.0.1 electronic reporting specification (ERS) and the Final Private health insurance statement specification version, commencing from 1 July 2019 (Statement Specification) have been published.
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Attached below are the 2017 ELS software specifications, each version is contained in a zip file.
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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 subsequently reduce the need for contact between your organisation or your clients and the ATO.
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A FINAL version of the Employee share scheme (ESS) annual report v3.0.1 specification is now available.
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Our latest small business benchmarks data is available for use in your products.
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