When you work with numbers, it is easy to think that languages are not needed. But if you consider the so called Big 4 - the accountancy firms Deloitte, PwC, Ernst & Young (EY) and KPMG - you get a picture of the global nature of the business. Deloitte is located in 100 different countries, 189,000 people around the world work for KPMG with its headquarters in the Netherlands, PwC operates in 158 countries and EY is in 150 countries. While English is the working language, with accountancy the reach is so global that language skills will be something which fit in the industry well.
You may of course work for a smaller body then the Big 4. But as finances and financial transactions cross borders, you may find language skills useful if you are dealing with foreign banks, cross-border transactions or correspondence from other countries. If the organisation you work for operates in France, buys from Germany or deals in property in Spain, it would be useful to have a working knowledge of that language.
Because Ireland is a very open economy, Irish businesses operate abroad and foreign businesses operate in Ireland. Tax specialists who understand tax laws in other countries benefit from foreign languages. Knowing foreign languages gives confidence to anyone dealing with international tax. Tax changes and staying on top of the latest development require an understanding of the new rules, and having languages will help in interpreting those developments. Should you find yourself working as a civil servant in the Department of Finance, you may deal with Brussels where French is still a language you need.