Children are entitled to free primary and post-primary education. The majority of primary schools are State-funded which means that you will not have to pay annual fees for your child's education.
In practice, however, schools often need to raise extra funds for additional resources such as computers, sports equipment or improved facilities. You may be asked to make a contribution or to take part in fund-raising for the school, but your participation in these activities must always be voluntary. State-funded schools cannot require you to make contributions.
If you choose to send your child to a private school, you will have to pay annual fees. These can vary considerably from school to school. Contact the school of your choice to ask for details of fees and other expenses.