Switzerland amends US tax treaty

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Switzerland amends US tax treaty

swiss-us.jpg

The Swiss parliament yesterday amended its tax treaty with the US allowing the IRS to easily identify US taxpayers with undeclared Swiss accounts.

The amendment sets a course for greater tax information sharing between the two countries. It is also hoped this will relieve some of the pressure the US is putting on Swiss banks, such as UBS, to share information.

Although the Swiss-US treaty has allowed information exchange for a number of decades, Swiss banking secrecy rules have seen the Switzerland interpreting these rules narrowly.

The new treaty will allow the IRS to ask the Swiss authorities to share the names of US taxpayers who exhibit “behavioural patterns” of tax evasion as set out by US law.

FURTHER READING:

Switzerland puts forward new tax compliance model

EXCLUSIVE: Rudolf Elmer explains why he blew the whistle on Julius Bär’s secret evasion activities

Ten things you need to know about the UK-Swiss tax deal

Swiss banks to pay $2.8 billion to Germany in tax evasion deal

more across site & shared bottom lb ros

More from across our site

In looking at the impact of taxation, money won't always be all there is to it
Australia’s Tax Practitioners Board is set to kick off 2026 with a new secretary to head the administrative side of its regulatory activities.
Ireland’s Department of Finance reported increased income tax, VAT and corporation tax receipts from 2024; in other news, it’s understood that HSBC has agreed to pay the French treasury to settle a tax investigation
The Australian Taxation Office believes the Swedish furniture company has used TP to evade paying tax it owes
Supermarket chain Morrisons is facing a £17 million ($23 million) tax bill; in other news, Donald Trump has cut proposed tariffs
The controversial deal will allow US-parented groups to be carved out from key aspects of pillar two
Awards
ITR invites tax firms, in-house teams, and tax professionals to make submissions for the 2027 World Tax rankings and the 2026 ITR Tax Awards globally
Pillar two was ‘weakened’ when it altered from a multinational convention agreement to simply national domestic law, Federico Bertocchi also argued
Imposing the tax on virtual assets is a measure that appears to have no legal, economic or statistical basis, one expert told ITR
The EU has seemingly capitulated to the US’s ‘side-by-side’ demands. This may be a win for the US, but the uncertainty has only just begun for pillar two
Gift this article