US President Donald Trump isn’t comfortable about the way in which some international locations are taxing Americans and corporations. He has made clear he’s keen to retaliate, threatening to double taxes for their very own residents and corporations.
Can Trump actually do this, unilaterally, as president? It seems he can, beneath a 90-year-old provision of the US tax code – Part 891.
In an govt memo signed on January 20 outlining his “America First Commerce Coverage”, Trump instructed US Treasury to:
examine whether or not any overseas nation topics United States residents or firms to discriminatory or extraterritorial taxes pursuant to Part 891 of Title 26, United States Code.
A sweeping energy
Section 891 of the US Inner Income Code is brief, however it’s in sweeping phrases.
If the president finds that US residents or firms are being subjected to “discriminatory or extraterritorial taxes” beneath the legal guidelines of any overseas nation, he “shall so proclaim” this. US revenue tax charges on the residents or firms of that nation are then mechanically doubled.
Yuri Gripas/Pool/EPA
The additional tax that might be collected is capped at 80% of the US taxable revenue of the taxpayer. The president can revoke a proclamation, if the overseas nation reverses its “discriminatory or extraterritorial” taxation.
Part 891 is a rare provision – however it has by no means been utilized. So far as I do know, no different nation has legislated such a rule. Importantly, it will solely apply to an individual or enterprise topic to revenue taxation by the US.
Take, for instance, a overseas nationwide incomes a wage within the US. If this particular person’s house nation grew to become topic to a proclamation beneath Part 891, their particular person tax charge within the US could be doubled – to as a lot as 74%.
A overseas firm incomes taxable income within the US would face a doubling of the corporate tax charge from 21% to 42%.
A little bit of historical past
A model of Part 891 has been within the US tax code since 1934, an earlier troubled time of tax disputes and financial melancholy.
It was signed into legislation by Democratic President Franklin D. Roosevelt on Could 10 1934, amid a tax dispute between the US and France.

Vincenzo Laviosa/Wikimedia Commons
In accordance with US tax historian Joseph Thorndike, the transfer adopted makes an attempt by France to levy extra taxes on US firms working there, starting within the mid-Twenties.
France had tried to make use of an 1873 legislation to tax US firms working in France on income earned within the dad or mum firm again within the US, and in different subsidiaries all over the world, not simply the French firm income.
The purpose was to counter worldwide profit-shifting, which might be used to cut back the tax payable by US subsidiaries working in France by claiming deductions or shifting revenue to different group firms exterior France.
The dispute was long-standing and France tried to evaluate taxes going again many years for some US firms. The doubtless large tax invoice (it appears the tax was by no means truly collected) grew to become a geopolitical difficulty, and the businesses requested the US authorities to intervene on their behalf.
Thorndike explains {that a} bilateral tax treaty was negotiated between the US and France to treatment this “double tax” scenario. However the French legislature refused to ratify it.
In retaliation, US Congress handed Part 891, and 6 months later, France ratified its bilateral tax treaty with the US.
Parallels with at present
In 1934, there have been no digital multinational enterprises like Meta or Google. However that tax dispute however has parallels with fashionable issues about taxing firms internationally.
The French authorities was attempting, with a relatively heavy hand, to counter worldwide profit-shifting by massive US multinationals.
Part 891 was re-enacted in later US tax codes, as much as at present, with minor amendments and no try to invoke it. It has remained within the background as a possible train of US fiscal and market energy, supported by each side of US politics.
Tax professor Itai Grinberg, who labored within the Biden administration on the OECD tax deal, suggested it might be utilized to the European Union resolution that taxes Apple in Ireland.

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What may Trump do?
President Trump has particularly focused the OECD international tax negotiations with this menace, only a month after Australia has legislated the worldwide minimal tax beneath “Pillar Two” of the OECD Global Tax Deal.
The OECD deal goals to make sure massive multinational enterprises pay a minimal 15% efficient tax charge in all of the jurisdictions through which they function, by making use of a top-up tax and under-taxed revenue tax.
Trump asserted in a memorandum that the OECD International Tax Deal is “extraterritorial”, instructing the US Secretary of the Treasury and the US Commerce Consultant to analyze it.
May Australia be singled out?
Trump’s memorandum additionally ordered an investigation into “different discriminatory overseas tax practices” which will hurt US firms.
This consists of whether or not any overseas international locations should not complying with their US tax treaties or have, or are more likely to put in place, any tax guidelines that “disproportionately have an effect on American firms”.
Notably, this might put Australia’s proposed “news bargaining incentive” within the crosshairs.
Below this proposal, digital platforms (lots of that are US-owned) must pay a brand new levy, which might be offset in the event that they negotiate or renew offers with Australian information media publishers to pay for internet hosting information content material.
Part 891 might apply to such taxes in the event that they have been discovered by Trump to be “discriminatory” in opposition to US firms. What “discriminatory” means shouldn’t be clear.
Its been suggested that overseas residents or firms might be protected against Part 891 by their nation’s tax treaty with the US, beneath the usual method {that a} later treaty prevails over an older code section. However Australia’s tax treaty with the US took impact in 1983, earlier than the latest re-enactment of Part 891 within the US tax code.
Learn extra:
News bargaining incentive: the latest move in the government’s ‘four-dimensional chess’ battle with Meta