Funding Opportunities and Fees
It is important to understand that an offer from a member of staff to supervise your project, and successful application to the programme, does not imply that the position is funded. You must ensure that you have adequate funding to pay the annual University fee (~€6,500 for EU students and ~€13,000 for non-EU students) and support yourself in Dublin. For the rules on eligibility for the EU fee see here.
Possible funding opportunities include:
The Trinity College Postgraduate Award is currently €6,500 per year for 3 years, plus fees (both EU and non-EU). In addition, TCD offers a more limited number of Ussher Fellowships, which are €13,000 per year for 3 years, plus fees (both EU and non-EU). You can apply for both of these awards when you make your application to the programme here.
The Irish Research Council (IRC) fund postgraduate studentships through their Government of Ireland Postgraduate Fellowship Scheme that offers a stipend of €16,000 per annum, plus fees and research costs. The IRC also offers funding to undertake Ph.D. research in collaboration with industry through their Enterprise Partnership Ph.D. Fellowship and the Employment-based Ph.D. Scheme.
If you have completed a first degree at an Irish university or IT and had a local authority grant, then it is possible to have that grant renewed to do a Ph.D. See here for more details.
Other useful information includes: