Part of a series on
Taxation
An aspect of fiscal policy
Policies Government revenue Property tax equalization Tax revenue Non-tax revenue Tax law Tax bracket Flat tax Tax threshold Exemption Credit Deduction Tax shift Tax cut Tax holiday Tax amnesty Tax advantage Tax incentive Tax reform Tax harmonization Tax competition Tax withholding Double taxation Representation Unions Medical savings account
Economics General Theory Price effect Excess burden Tax incidence Laffer curve Optimal tax Theories Optimal capital income taxation Distribution of Tax Tax rate Flat Progressive Regressive Proportional
Collection Revenue service Revenue stamp Tax assessment Taxable income Tax lien Tax refund Tax shield Tax residence Tax preparation Tax investigation Tax shelter Tax collector Private tax collection Tax farming
Noncompliance General Tax avoidance Repatriation tax avoidance Tax evasion Tax resistance Tax shelter Debtors' prison Smuggling Black market Unreported employment Corporate Tax inversion Transfer mispricing Base erosion and profit shifting (BEPS) Double Irish Dutch Sandwich Single Malt CAIA Locations Tax havens Corporate havens Offshore financial centres (OFCs) Offshore magic circle Conduit and sink OFCs Financial centres Financial Secrecy Index Major examples Ireland as a tax haven Ireland v. Commission Leprechaun economics Liechtenstein tax affair Luxembourg Leaks Offshore Leaks Paradise Papers Panama Papers Swiss Leaks United States as a tax haven Panama as a tax haven
Types Direct Indirect Per unit Ad valorem Aviation Airport improvement Landing Solidarity Capital gains Expatriation Consumption Departure Hotel Sales Stamp Television Tourist Value-added Dividend Environmental tax Carbon Eco-tariff Landfill Natural resources consumption Severance Steering Stumpage Excise Alcohol Cigarette Fat Meat Sin Sugary drink Tobacco General Georgist Gift Gross receipts Hypothecated Income Inheritance (estate) Land value Luxury Payroll Pigouvian Property Resource rent Single Surtax Turnover Use User charge/fee Congestion Fuel Road/GNSS Toll Vehicle miles traveled Corporate profit Excess profits Windfall Negative (income) Wealth
International Financial transaction tax ATTAC Currency transaction tax European Union Common Consolidated Corporate Tax Base (CCCTB) Global minimum corporate tax rate Robin Hood tax Tobin tax Spahn tax Tax equalization Tax treaty Exchange of Information Permanent establishment Transfer pricing European Union FTT Foreign revenue rule
Trade Custom Duty Tariff Import Export Tariff war Free trade Free-trade zone Trade agreement ATA Carnet
Research Academic Mihir A. Desai Dhammika Dharmapala James R. Hines Jr. Ronen Palan Joel Slemrod Gabriel Zucman Advocacy groups Institute on Taxation and Economic Policy (ITEP) Oxfam (UK) Tax Foundation (US) Tax Justice Network (TJN) Tax Policy Center (US)
Religious Church tax Eight per thousand Teind Tithe Fiscus Judaicus Leibzoll Temple tax Tolerance tax Jizya Kharaj Khums Nisab Zakat
By country All Countries List of countries by tax rates Tax revenue to GDP ratio Tax rates in Europe Individual Countries Albania Algeria Argentina Armenia Australia Azerbaijan Bangladesh Bhutan Brazil Bulgaria BVI Canada China Colombia Croatia Denmark Finland France Germany Greece Hong Kong Iceland India Indonesia Iran Ireland Israel Italy Japan Kazakhstan Lithuania Malta Morocco Namibia Netherlands New Zealand Norway Pakistan Palestine Peru Philippines Poland Portugal Russia South Africa Sri Lanka Sweden Switzerland Taiwan Tanzania United Arab Emirates United Kingdom United States Uruguay
Business portal Money portal

A Spahn tax is a type of currency transaction tax that is meant to be used for the purpose of controlling exchange-rate volatility. This idea was proposed by Paul Bernd Spahn in 1995.^[1]

The initial idea for a currency transaction tax is attributed to James Tobin in 1972,^[2] a concept now known as a Tobin tax. On 16 June 1995 Spahn, in his analysis of the original idea, concluded that the concept was not viable and suggested an alternative solution to the problem of managing exchange-rate volatility.^[1]

According to Spahn, "Analysis has shown that the Tobin tax as originally proposed is not viable and should be laid aside for good." Furthermore, he believes that "it is virtually impossible to distinguish between normal liquidity trading and speculative 'noise' trading. If the tax is generally applied at high rates, it will severely impair financial operations and create international liquidity problems, especially if derivatives are taxed as well. A lower tax rate would reduce the negative impact on financial markets, but not mitigate speculation where expectations of an exchange rate change exceed the tax margin."^[1]

In 1995, Spahn suggested an alternative, involving "a two-tier rate structure consisting of a low-rate financial transactions tax, plus an exchange surcharge at prohibitive rates as a piggyback. The latter would be dormant in times of normal financial activities, and be activated only in the case of speculative attacks. The mechanism allowing the identification of abnormal trading in world financial markets would make reference to a 'crawling peg' with an appropriate exchange rate band. The exchange rate would move freely within this band without transactions being taxed. Only transactions effected at exchange rates outside the permissible range would become subject to tax. This would automatically induce stabilizing behavior on the part of market participants."^[1]

On 15 June 2004 the Belgian Parliament approved a bill implementing a Spahn tax.^[3] According to the legislation, Belgium will introduce the Spahn tax once all countries of the eurozone introduce a similar law.^[4]

In November 2004, Belgium submitted this law for an opinion to the European Central Bank, which provided both an economic and legal assessment. Its summary stated:

"...the ECB concludes that the economic and monetary usefulness of a tax, such as envisaged by the draft law, is highly questionable, given the uncertainty of its claimed benefits and the likely welfare costs arising from distortions in the working of financial markets. This assessment is reinforced by the difficulties expected with respect to its implementation."^[4]

It continued:

"...the ECB is of the opinion that the introduction by a euro area Member State of a tax, such as envisaged by the draft law, is incompatible with the Treaty."^[4]

• Currency Transaction Taxes - Library of links to legislation, proposals, reports, articles and archives - from Global Policy Forum