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Australian Tax Gaps

The tax gap is an estimate of the difference between the amount of tax the ATO collects and what ATO would have collected if every taxpayer was fully compliant with tax law. The tax gap estimates and their historical trends provide useful insights into the performance of the tax and superannuation systems.

The excel file provides an overview of the current and historical tax gap estimates, published in ATO annual reports and the ATO website, whilst the pdf is a technical guide to help with understanding the tax gaps.

For feedback or inquiries please email us at: Taxgap@ato.gov.au

Data and Resources

Australian tax gapsexcel (.xlsx)
This file contains all current and historical tax gaps
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Individuals Not In Business Tax Gap Technical Guide.pdf
Understanding the gap, estimation method and results
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Additional Info

Field	Value
Title	Australian Tax Gaps
Type	Dataset
Language	English
Licence	Creative Commons Attribution 2.5 Australia
Landing Page	https://data.gov.au/data/dataset/f627f458-7d5a-450d-9f62-45d6983961da
Date Published	2020-10-15
Date Updated	2025-03-07
Contact Point	Australian Taxation Office taxgap@ato.gov.au
Temporal Coverage	2010-07-01 00:00:00 - 2021-06-30 00:00:00
Geospatial Coverage	SA0003560: Australia
Data Portal	data.gov.au
Publisher/Agency	Australian Taxation Office