A year before, figures from 47 million financial accounts showed that a total of €5 trillion was held offshore, indicating how a wider net of data collection from more jurisdictions can boost the number. 

The OECD’s latest figure is not far different from the $9.6 trillion sum measured in a Boston Consulting Group report issued a few weeks ago. 

“Automatic exchange of information is a game changer,” OECD Secretary-General Angel Gurría, said. “This system of multilateral exchange created by the OECD….is providing countries around the world, including many developing countries, with a wealth of new information, empowering their tax administrations to ensure that offshore accounts are being properly declared.”

“Countries are going to raise much needed revenue, especially critical now in light of the current COVID-19 crisis, while moving closer to a world where there is nowhere left to hide,” he said. 

Automatic exchange of information agreements, collectively known under a framework called the Common Reporting Standard, are controversial, however. Mishcon de Reya partner Filippo Noseda recently told this news service that cybersecurity breaches in a number of countries pose a privacy threat to individuals whose details are covered by data transfers.

Commenting on the latest OECD data, Noseda said: “the amount of €10 trillion exchanged under the CRS in 2019 is more than double the total annual GDP of Germany and almost 20 times the GDP of Austria .”

“These huge numbers indicate the scale of the data security risk for compliant citizens. To illustrate this point, we published a 31-page long hacking and data breaches list that shows very clearly the sorry state of data security of tax authorities, other government authorities and financial institutions. The OECD has already acknowledged that CRS data has been stolen in at least one occasion and this is the tip of the iceberg," he added.

Changing offshore world
Swiss bank secrecy has been largely a dead letter internationally for the past 10 years, while a number of other jurisdictions have been forced to clean up their act and open up to requests about offshore accounts. A worry about such a drive for transparency is whether legitimate client privacy is at risk. 

The OECD argues that the discovery of “hidden accounts” would create new revenue sources for governments. 

“The discovery of previously hidden accounts - thanks to automatic exchange of information - has and will lead to billions in additional tax revenues,” Gurría said. “The tremendous achievements of our tax transparency work prove that when we work together, we all win. International co-operation is a condition for success.”

In the BCG report referenced above, it noted that Switzerland remains top of the cross-border tree, holding $2.4 trillion of such money in 2019, ahead of Hong Kong at $1.9 trillion; Singapore at $1.1 trillion; the US at $800 billion ; the Channel Islands ; the United Arab Emirates ; Luxembourg and the UK both at $300 billion.