In addition, this means that VAT must be charged to Mann at the same rate as in the UK and that all VAT revenues are paid to the UK Treasury (but then refunded by this agreement to the Manx Ministry of Finance), but the agreement is generally accepted as beneficial to the Isle of Man. IOM is not part of the United Kingdom and the common fiscal space between the two countries stems from an agreement between the United Kingdom and IOM governments. That`s why you need to be especially careful when dealing with IOM issues. These include disclosure (see VIOM03600). The British government has paid the Isle of Man more than 300 million pounds this year in a revenue-sharing deal, which critics say it subsidizes the island`s zero corporate tax rate. A spokesman said the new agreement was based on detailed surveys of household and business spending. The 4.5% increase was a “temporary estimate,” and payments through 2013-14 will be adjusted as new investigations are completed. The last formalization of this agreement was signed on 15 October 1979 in the form of a 1979 customs and excise duty agreement and introduced by the Isle of Man Act 1979 (An Act of Parliament). It is essentially a revenue-sharing system, and it is the last agreement based on the 1957 customs agreement, which stipulates that Tynwald could not introduce any difference from the indirect taxation of the United Kingdom (except on beer) without the authorization of the British Ministry of Finance (in preparation for the authorization of the British Parliament to enable tynwald to indirect taxation of Manx in the Customs (Isle of Man) Act 1958). There were several agreements of the 17th century. In 1911, the Isle of Man Constitution Committee (the MacDonnell Inquiry) described the Common Purse Agreement under these conditions: the agreement is so called because it effectively establishes a “common wallet” for obtaining excise duties and revenue, which will then be distributed between the two funds according to agreed formulas. The spirit of the agreement between the United Kingdom and IOM is that IOM legislation will generally remain parallel to UK legislation and procedures, so that a common customs union and indirect taxation will be maintained.