NI/Island-Born s.6(1)+s.6(2) Declaratory-Act Entitlement

The eligible cohort is a person born in the island of Ireland (the Republic OR Northern Ireland) who is entitled under s.6(1) and who has the entitlement crystallised from birth by the s.6(2) declaratory act. Two temporal cohorts apply. (a) Births before 1 January 2005: entitlement is unconditional jus soli, preserved by the constitutional grandfather clause Art 9.2.2 and by INCA 1956 s.6A(2)(a); for this cohort the s.6(2) crystallisation operates without any parental-status condition. (b) Births on or after 1 January 2005: because s.6(1) is expressly 'subject to s.6A', entitlement itself is governed first by s.6A. A person born in the island is not entitled unless a parent was resident in the island for at least 3 of the 4 years preceding birth (s.6A(1)), OR a parent falls within a s.6A(2) exemption, most relevantly s.6A(2)(b) (Irish-citizen/entitled parent) and s.6A(2)(c) (British-citizen / NI-entitled-without-restriction parent). Only once a post-2005 person IS entitled does the s.6(2) crystallisation then apply to fix the status from birth. For NI births specifically the practical entitlement remains broad post-2005 because most NI-born persons have a British-citizen parent or a parent entitled to reside in NI without restriction, squarely within s.6A(2)(c). Eligibility does not require renouncing any other nationality: Ireland permits dual citizenship (applies only Chapter II of ETS 043, never Chapter I). Current as of 29-May-2026.

This route is not application-driven before a Minister exercising discretion; there is no 'application to acquire' because the citizenship already exists from birth (s.6(2)(a)). The procedure is one of performing the citizen-only act that crystallises and evidences the status. The paradigmatic 'act which only an Irish citizen is entitled to do' is applying for an Irish passport through the Department of Foreign Affairs (DFA) Passport Service; an alternative is a Foreign Births Register application (principally the s.27 machinery for persons born outside the island). Practical steps: (1) obtain the civil birth certificate showing birth in the island of Ireland (for NI births, the Northern Ireland birth certificate); (2) for post-2005 births, assemble evidence of the qualifying parent to satisfy the s.6A entitlement first, e.g. a British-citizen parent's passport/birth certificate or proof of a parent's unrestricted right to reside in NI/the State (engaging s.6A(2)(b)/(c)); (3) lodge the Irish passport application as the citizen-only act under s.6(2)(a). The successful application both proves and crystallises citizenship from birth. There is no naturalisation residence requirement, no good-character test, no oath of fidelity, no acquisition or registration fee beyond the ordinary passport fee, and no Ministerial discretion for a person who meets the entitlement. Where a post-2005 island-born person meets neither the s.6A(1) residence condition nor a s.6A(2) exemption, the entitlement does not exist and s.6(2) cannot crystallise it; that person must pursue ordinary naturalisation (IE-NAT-01). Where a born-entitled person never performs a citizen-only act, s.6(2)(b) preserves their position. Current as of 29-May-2026.

This route rests on the two-limb entitlement-and-crystallisation structure of INCA 1956 s.6 (whole section substituted (F10) by INCA 2001 (15/2001) s.3(1), in force 2 December 1999, with s.6(1) and s.6(2) further substituted (F11) by INCA 2004 (38/2004) s.3(a),(b), in force 1 January 2005; verified against the revisedacts.lawreform.ie s.6 amendment annotations, retrieved 2026-05-30). The first limb is the entitlement: s.6(1) provides that every person born in the island of Ireland is entitled to be an Irish citizen, expressly subject to section 6A (the post-2005 conditional regime). The 'island of Ireland' formula constitutionally includes its islands and seas and embraces Northern Ireland (Constitution Art 2; Art 9.2.1), so the entitlement reaches NI-born persons within the same statutory spine as Republic births. The second limb is the crystallisation rule unique to this route: s.6(2)(a) provides that a person so entitled is an Irish citizen from the date of his or her birth if he or she does, or has done on his or her behalf, any act which only an Irish citizen is entitled to do; and s.6(2)(b) provides that the doing of no such act does not of itself give rise to a presumption that the person is not an Irish citizen. The defining contrast with naturalisation (s.15/s.16, constitutive on grant of certificate) and with FBR-descent registration (s.7(3) proviso, prospective from registration) is that s.6(2)(a) fixes the status from birth. The original standalone NI declaration (old s.7(1)) was superseded when the 2001 Act recast s.7 as 'Citizenship by descent' and substituted s.6, so the modern mechanism is s.6(1)+s.6(2), NOT s.6(3) (statelessness safety-net). Current text as of 29-May-2026.

Two distinct State authorities operate around this route and must not be normalised into one. The operative authority is the Department of Foreign Affairs (DFA) / Minister for Foreign Affairs, through the Passport Service: it adjudicates the passport application that constitutes the citizen-only act crystallising the entitlement, and it maintains the Foreign Births Register under INCA 1956 s.27. The DFA also operates the certificate-of-nationality machinery under s.28 for cases needing a formal authoritative determination of citizenship status without (or alongside) a passport application. By contrast, naturalisation and revocation functions sit with the Minister for Justice (transferred from Foreign Affairs by S.I. 418/2011), administered via Immigration Service Delivery (ISD), but those functions are not engaged by this route, which requires no naturalisation decision and exposes the citizen to no s.19 revocation. At the border, the Common Travel Area is administered by ISD immigration officers, and island/NI-born Irish citizens enjoy non-alien status in both jurisdictions under Immigration Act 2004 (IE) s.4/s.5. There is no statutory grant decision to appeal (the entitlement is not granted, it pre-exists); a refusal of a passport on entitlement grounds (e.g. a disputed post-2005 s.6A parentage exemption, or disputed proof of island birth) would be challengeable by judicial review of the DFA decision in the High Court, not by any naturalisation appeal tribunal (there is none). Authority allocation current as of 29-May-2026.