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Findings report – Top 1,000 income tax and GST assurance programs

Key findings from the Top 1,000 income tax and GST assurance programs for the income year ended 30 June 2026.

Last updated 17 September 2026

This report provides observations and insights about the Top 1,000 program.

A summary of our assurance ratings for income tax and GST for the 2025–26 financial year.

How we engage with the Top 1,000 population to improve compliance and give assurance to the community.

Findings about income tax from the Top 1,000 assurance reviews.

Findings about GST from the Top 1,000 assurance reviews.

Tables showing the overall assurance ratings for the Top 1,000 income tax and GST assurance programs by industry.

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