The Currency Transaction Tax - enhancing financial stability and financing development
Updated: Sep 4
The Devastating Impact of Currency Volatility
In July 2004, the Tobin Tax Network published a comprehensive report authored by Sony Kapoor outlining a modernised, highly feasible framework for a Currency Transaction Tax (CTT). The report addressed a global foreign exchange market that had grown to a staggering turnover of $300,000 billion annually, equivalent to more than fifty times the total volume of world trade.
Kapoor demonstrated that the vast majority of this trading had a time horizon of less than a week, driven overwhelmingly by speculation, technical trading, and psychological bandwagon effects rather than underlying economic fundamentals. This systemic misalignment periodically results in severe currency crashes, such as those witnessed in Mexico (1994), South East Asia (1997–98), Russia (1998), Brazil (1999), and Argentina (2001). These crises have profound social and economic consequences, leading to massive job losses, slashed social security spending, and millions of people being plunged into extreme poverty.
The Two-Tier CTT Proposition
To combat this instability, the report built upon German economist Paul Bernd Spahn's concept of a two-tier Tobin Tax, modernising it to suit highly electronic global markets. The proposal established two distinct tax rates to serve two separate goals:
The Base Rate for Development: A minimal tax of 0.005 per cent (half a basis point) applied to all foreign exchange transactions. Because the market is so vast, this tiny levy would raise between $10 billion and $15 billion annually without disrupting normal market functions.
The Surcharge for Stability: A punitive tax rate, potentially as high as 50 per cent, functioning as an automatic "circuit breaker". This rate would only trigger if a currency's value fluctuated outside a predetermined normal band (e.g., moving more than 5 per cent from the previous day's closing price). By making leveraged speculation prohibitively expensive, it stops speculative attacks dead in their tracks.
A Mainstream and Enforceable Solution
Opponents frequently attempt to dismiss the Tobin Tax as an unworkable, radical theory, but the report proved that the core mechanics already existed in mainstream finance. Security transaction taxes were already successfully raising billions in the United Kingdom (Stamp Duty Reserve Tax) and the United States, while circuit breakers halting excessive price swings had been standard practice on major stock exchanges since the 1987 crash.
Crucially, Kapoor outlined an airtight collection method to prevent tax evasion:
The tax must be levied on the currency, not the jurisdiction.
If the UK adopted the CTT, all trades involving Pound Sterling would be taxed globally, because any Sterling trade must ultimately settle through the Bank of England's jurisdiction via 'nostro' accounts.
Collection would be fully automated at the point of settlement through modern electronic systems like the Continuous Linked Settlement (CLS) bank or domestic gross settlement systems.
Unlocking Global Prosperity
The revenue generated by the base rate was explicitly earmarked to help fund the United Nations Millennium Development Goals (MDGs), aiming to halve world poverty by 2015. However, the report argued that the indirect economic benefits of the CTT would be even more profound.
By virtually eliminating the threat of catastrophic currency crashes, developing countries would no longer be forced to hoard massive, unproductive foreign exchange reserves to defend their currencies. The report estimated that releasing just half of these excessive reserves could free up $750 billion for vital domestic investments in health, education, and infrastructure. Furthermore, a stabilised currency market reduces the high costs of hedging for multinational businesses, encourages foreign direct investment, and allows governments to maintain the lower interest rates necessary to stimulate long-term economic growth.
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