Sixty-nine Australians who earned more than $1 million in the 2016-17 financial year did not pay a cent of income tax.

Key points: ATO data shows 69 millionaires reduced their taxable income to zero by claiming millions in deductions

ATO data shows 69 millionaires reduced their taxable income to zero by claiming millions in deductions Negative gearing is still a popular tax break, with 1.3 million people claiming losses totalling $12.3 billion on their rental properties

Negative gearing is still a popular tax break, with 1.3 million people claiming losses totalling $12.3 billion on their rental properties 8.8 million people claiming $21.98 billion in work-related expense deductions

Annual data from the Australian Tax Office, released on Friday, shows the list of Australia's millionaires paying no income tax is growing.

The data shows in 2016-17, 60 people who declared total incomes above $1 million reported taxable incomes below $6,001, two posted taxable incomes between $6,001 and $10,000, and eight declared taxable incomes between $10,001 and $18,200, putting them all below the tax-free threshold.

Not one of them paid the Medicare levy.

Sixty-nine of them reduced their tax bill to zero, each claiming millions in deductions, primarily for the "cost of managing tax affairs", but also for "gifts or donations". This was up from 62 who paid no tax the year before.

The Tax Office defines "cost of managing tax affairs" as including the cost of preparing and lodging tax returns, the fees paid to recognised tax advisers, the cost of court appeals and interest charges imposed in relation to tax disputes.

To address the problem of millionaires paying zero tax, the Labor party has announced a policy to limit the deduction that can be claimed for managing tax affairs to $3,000.

Of those who paid zero tax, some also managed to claim back franking credits from their share investments.

Thirty-seven in this group claimed franking credits totalling $7.8 million.

1.3m Australians negatively gear

There were 13.9 million individuals filing returns for the 2016-17 income year.

ATO ramps up focus on rental property owners The Australian Taxation Office is turning its focus to rental property tax deductions, and will carry out more audits. Read more Read more

As Labor confirmed its changes to negative gearing will start on January 1 if it wins the election, tax data shows 2.15 million Australians reported rental income, totalling $44.1 billion. This is slightly up from 2.09 million reporting income of $42.1 billion the year before.

Of those, 1.3 million people made a combined loss of $12.3 billion on their rental properties. There were 855,975 that were in either a neutral position or made a gain.

The data shows negatively-geared landlords tend to spend more on their properties.

Interest on mortgage loans was by far the biggest expense. Landlords losing money on their properties claimed deductions for $18 billion in interest payments.

These investors also claimed $2.7 billion in capital works, $1.9 billion in repairs and maintenance, and $1.6 billion in property agent fees and commissions.

Landlords in total claimed $400 million in travel expenses related to their rentals.

A number of those claiming had more than one investment property to claim against.

In 2016-17 there were 20,357 investors with six or more properties, 19,504 with five, 46,460 with four, 125,915 with three, 407,971 with two and 1.54 million with one.

The data shows 11,349 people held at least six properties on which they are negatively geared.

Work-related expense deductions

There were 8.84 million people claiming $21.98 billion in work-related expense deductions.

This included:

3.6 million people claiming $8.62 billion in work-related car expenses

3.6 million people claiming $8.62 billion in work-related car expenses 1.4 million claiming $2.03 billion in work-related travel expenses

1.4 million claiming $2.03 billion in work-related travel expenses 6.4 million people claiming $1.86 billion in clothing expenses relating to their job

6.4 million people claiming $1.86 billion in clothing expenses relating to their job 530,230 people claiming $1.13 billion in self-education expenses

530,230 people claiming $1.13 billion in self-education expenses 7.25 million people claiming $8.33 billion in "other" work-related expenses

There were 4.5 million people who claimed $3.48 billion in tax deductions for gifts and donations and 6.1 million people who claimed $2.29 billion for the cost of managing their tax affairs.