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Tech giants like Google, Facebook and Netflix make billions of dollars from Australian users every year. But most of those profits are not taxed here.

To address this tax gap, some countries have introduced a new kind of tax called the digital services tax, or DST. It applies to revenue earned from users in a country, even if the company has no physical operations there. Some European Union member countries, the UK and Canada have all introduced such a tax.

In Australia, it is estimated the five largest tech giants recorded A$15 billion in revenue in Australia last year, but combined they paid  in tax.

Australia has never contemplated imposing a similar tax.  last week after the United States threatened to impose higher tariffs on New Zealand goods.

So what’s holding Australia back?

To understand why Australia thinks its  on the taxation of the multinational tech giants, we need to step back in time.

About 100 years ago, Australia and other developed nations decided to tax residents on all their income earned worldwide, while non-residents were taxed .

After the second world war, Australia entered into  so foreign companies selling to Australian customers would no longer be taxed here. Instead, those companies’ home countries would tax all their profits.

As the world moved to digital products this century, it became easy for giant multinational enterprises offering advertising on social media (such as Facebook and Instagram), advertising on search platforms (Google), and streaming services (Netflix) to provide those services from abroad. Little or no activity is conducted through local branches.

But countries where the sales are made have increasingly questioned the wisdom of having forfeited their taxing rights over income by foreign providers.

The obvious solution would have been to renegotiate the treaties. This would restore the right of countries like Australia to tax foreign companies’ profits made from local customers or users.

However, treaty renegotiation is slow and complex. So several European countries, beginning with  in 2019, came up with a short-cut solution.

They introduced a discrete new tax on sales of digital services, called digital services taxes (DSTs). While the specific design varies by country, most DSTs apply a low tax rate, typically between 3% and 5%, on revenue rather than profits. They target large digital platforms that earn money from users within the taxing country, regardless of the company’s location.

Because DSTs are levied on revenue and are structured as separate from income tax, governments argued they could be introduced without breaching income tax treaties.

The new taxes . In Australia, the Greens have called for a DST, but both major parties have remained  to a new tax. This is due to the concern that the US may impose retaliatory tariffs on Australian goods.

Australians are enthusiastic consumers of digital products. Depending on which companies are included in the calculation, the annual revenues vary between $15 billion and $26 billion a year, but only a fraction of that is taxed here.

At a time when the federal budget  for the foreseeable future, Australia is foregoing potentially millions in lost revenue from these digital giants.

While Australia has avoided a DST as a solution to the income tax loss, it has been willing to regulate and tax foreign digital companies in other ways. Australia collects 10% goods and services tax, or GST, on , including streaming platforms and app subscriptions.

This helps ensure foreign providers are taxed similarly to domestic ones when it comes to the GST.

Australia has also imposed non-tax obligations on digital giants such as the requirement that digital platforms  for using their news content.

In February, the Trump administration described DSTs as tools used by foreign governments to “” and warned retaliatory tariffs would be imposed in response.

The accompanying White House  singled out Australia and Canada, arguing the US digital economy dwarfs those countries’ entire economies. It suggested any attempt to tax US tech companies would not go unanswered.

Six weeks later, the US imposed a 10% tariff on  to the US and a 25% tariff on steel and aluminium exports.

The US sees its penal tariff plans as a useful negotiating tool to pressure trading partners into retreat on a broad range of peripheral complaints, including the digital services tax.

To date, only two countries have retreated: New Zealand and . Other countries are standing firm.

In Australia, the Greens have called for the adoption of a DST, but the current and  remain firm in their opposition. There is concern about antagonising the US at a delicate time when our broader trade relations are under scrutiny.

For the foreseeable future, the digital giants will continue to earn billions from Australian users. Most of those profits will remain beyond the reach of Australian tax law.

The article was originally published in . Fei Gao is a Lecturer in Taxation at the ������ Business School. Richard Krever is a Professor of Tax Law at the University of Western Australia.