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Last estimate and trends for the wine equalisation tax gap

Compare the 2022–23 wine equalisation tax (WET) gap with trends from previous years.

Published 3 November 2025

For 2022–23, we estimate a net wine equalisation tax (WET) gap of 4.3% or $50.6 million. This means we estimate we will collect close to 96% of the total theoretical WET.

The WET net gap and gross gap estimates have trended down over the 6-year period. The latter suggests voluntary compliance has improved over time.

For 2022–23, the gross gap is 5.0% or $58.1 million. From a tax collection perspective, this means that 95% of the tax we expect to collect will be collected voluntarily. COVID had a minimal impact on the WET expected to be collected and the overall population subject to WET. The loss of sales in public venues was offset by increased online and retail sales of wine, resulting in no discernible change in overall WET reported.

The legislative changes in 2018–19 have significantly reduced WET refundable and increased net WET reported for the year. At the same time, voluntary payments increased. This has contributed to smaller gross tax gaps for 2018–19 onwards.

Table 1 summarises the results from 2017–18 to 2022–23.

Table 1: WET amounts, 2017–18 to 2022–23

Element

2017–18

2018–19

2019–20

2020–21

2021–22

2022–23

Population (count)

4,011

3,816

3,790

3,818

3,908

3,753

Gross gap ($m)

56.7

55.6

55.7

60

61.3

58.1

Amendments ($m)

2.9

4.2

5.5

10.2

9.5

7.4

Net gap ($m)

53.8

51.3

50.2

49.8

51.8

50.6

Expected collections ($m)

910

1,012

1,020

1,087

1,104

1,121

Theoretical liability ($m)

964

1,063

1,070

1,137

1,156

1,172

Gross gap (%)

5.9%

5.2%

5.2%

5.3%

5.3%

5.0%

Net gap (%)

5.6%

4.8%

4.7%

4.4%

4.5%

4.3%

Figure 1: Gross and net WET gap percentages from 2017–18 to 2022–23

The gross and net gap in percentage terms, as outlined in Table 1. 

For previously published tax gap figures, see Australian Tax Gaps - Data.gov.auOpens in a new window

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