For a taught Master's you need a relevant Bachelor's degree. Beyond that, requirements sit at programme level.
Trinity College Dublin requires a 2:1 honours degree or international equivalent, publishes no Indian percentage conversion at postgraduate level, and assesses each application individually. Other institutions publish percentage equivalences. Some weight work experience heavily. Technological universities and private providers are generally more flexible.
Go to the programme page. Where no conversion is published, email the admissions office and get the answer in writing before paying an application fee.
Three-year versus four-year Indian Bachelor's degrees
Treatment varies by institution and by programme, and can differ between two programmes at the same institution. Some Irish institutions accept a three-year Indian Bachelor's for direct Level 9 entry. Some require a four-year degree or additional qualifications for particular programmes.
Because there is no single national rule, confirm this in writing with each institution you apply to, before you pay. Ask the specific question: "Is my three-year BSc from [university] acceptable for direct entry to [named programme]?" A generic answer about Indian qualifications is not the same as an answer about your programme.
Establishing your own baseline before anyone replies
You do not have to wait on an admissions office to understand how your degree reads in Irish terms. NARIC Ireland, hosted by Quality and Qualifications Ireland, provides online comparability statements that reference foreign qualifications to award types and levels on the National Framework of Qualifications, through a free searchable database of over 2,000 qualifications from more than 170 countries. Search your award in the Foreign Qualifications Database. Where a qualification is not listed, NARIC may issue a generic comparability statement on application.
Two limits. The statements are not personalised, and recognition decisions remain with the institution or employer. And for regulated professions such as nursing, recognition runs through the relevant professional body rather than NARIC. See 14.6.
Used properly, a comparability statement tells you which Irish award type your degree is being read against, which makes the rest of this section a great deal less guesswork.
Backlogs, arrears and re-sits
There is no national rule on backlogs. Tolerance is set at programme level, in the same way percentage conversions are, and two programmes at the same institution can treat the same record differently.
Three things hold regardless of where you apply.
Disclose rather than omit. Arrears, re-sits and supplementary examinations appear on an official transcript, and your transcript is submitted in full. An omission discovered later is a materially worse problem than the arrear itself, and it affects the credibility of the whole application, including with the visa office, which assesses documentation quality as a matter of course. See 10.2.
Ask the specific question in writing, in the same form as the three-year degree question: "My transcript shows [number] arrears, all cleared, from [year]. Is this compatible with entry to [named programme]?" A general statement that the institution considers applications holistically is not an answer to that question.
Weight your shortlist accordingly. As 2.1 sets out, technological universities and private providers are generally more flexible on entry and place more weight on relevant coursework and work experience, while research universities sit at the competitive end. If your academic record carries arrears, build the tiers in your 4.4 shortlist with that in mind rather than applying only at the competitive end.
Study and work gaps
A gap between your degree and your application is not in itself a barrier to Irish admission, and a substantial number of applicants to technological universities and to business, analytics and engineering programmes arrive with Indian work experience rather than straight from a Bachelor's.
What matters is that the gap is accounted for. Your statement of purpose is where that happens, and it is read by two different audiences with two different concerns. Admissions is asking whether you can complete the programme. The visa officer, as 10.2 explains, is assessing whether your study plan is coherent and whether you intend to leave when your permission expires. A gap explained as continuous employment, with documentation, answers both. A gap left unexplained invites both to fill it in themselves.