In the 12 months to end September 2011, the last 12 month period for which figures are available, over 12 billion SMS messages and over 43 million MMS messages were sent in Ireland. This information is based on figures for mobile telephone usage per quarter supplied by the companies to the Commission for Communications Regulation (ComReg). At those usage rates, a levy of 2 cent on such messages could raise c. €246 million per annum, which is in line with the figure indicated in the Deputy's question.
However, this potential yield does not take account of any behavioural impact if a levy was directly imposed on customers or imposed on the mobile phone companies and passed on to customers. Text messages are already subject to VAT at 23%. While any additional revenue would be welcome in the current circumstances, wider social and economic factors which may militate against the introduction of a further tax on text messages would also have to be taken into account. I am not aware of a similar tax anywhere else in the world. Although there are no plans to introduce such a tax at this time, all potential taxation measures are kept under review.