OECD and corporate tax

A chara, – As detailed at length by Pat Leahy in your issue of January 1st, last year Minister for Finance Paschal Donohoe fought tooth and nail, with eventual success, to have the phrase "at least 15 per cent" removed from the text of the OECD's proposed agreement on the tax rate which should apply to multinational companies ("How Donohoe weighed the odds and rolled the dice on the corporate tax deal", News, Analysis, December 1st).

In the text which was finally agreed last October, this phrase was replaced by one referring to “a minimum corporate tax rate of 15 per cent”.

Can anyone explain what the difference is between “a tax rate of at least 15 per cent” and “a minimum tax rate of 15 per cent”? – Is mise,

PROINNSIAS

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BREATHNACH,

Maynooth,

Co Kildare.