The regime that applies
Ireland is not part of the Schengen area and runs its own visa system: a Schengen visa does not admit you. Depending on nationality, entry is visa-free or requires a short-stay 'C' visa applied for online and then submitted with supporting documents.
An arrangement with the United Kingdom means some visitors holding a UK visa may travel on to Ireland under specific conditions; the scheme has varied over time, so verify its current terms rather than relying on an older account.
What the application turns on
As everywhere, the applicant's ties to their own country weigh more than the invitation. Provide evidence of employment, funds, accommodation and the relationship, and state the purpose honestly — if the visit is to plan a marriage, say so.
The border and the Common Travel Area
The land border with Northern Ireland is open and unmarked, which surprises visitors: you can cross without noticing. That does not mean your permission to be there transfers — Ireland and the UK are separate jurisdictions for immigration, and crossing without the right permission is an offence.
Health and practicalities
No vaccinations required. Visitors are not covered for most healthcare and are charged: travel insurance is necessary. European visitors should carry their European health insurance card, which covers necessary treatment.
Three rules that hold for every destination
- Use the official portal. Sites that "facilitate", "expedite" or "check" a visa charge for a service the state does not require, and collect your identity documents on the way. The official site is always cheaper and usually faster.
- A visa is not a right of entry. It is permission to present yourself at the border; the officer there decides. Carry the return ticket, the address of your stay and evidence of funds.
- Read your own foreign ministry's travel advice before booking, not after. It conditions your insurance and your consulate's ability to help.
The passport comes first
The commonest reason for being refused boarding is not the visa but the passport: insufficient validity beyond the return date, no free pages, a damaged document. Check it the day you decide to travel, not the week you leave — a renewal takes weeks.