Yes, cousin marriage is legal in New Zealand under specific conditions.
New Zealand’s Marriage Act 1955 permits first-cousin marriages, provided neither party is already married or in a civil union. The law does not explicitly prohibit consanguinity beyond first cousins, but the Department of Internal Affairs (DIA) enforces strict documentation requirements to prevent fraudulent marriages. Recent 2026 compliance shifts under the Births, Deaths, Marriages, and Relationships Registration Act 2021 mandate additional identity verification for all applications, including genetic relation disclosures if requested.
Key Regulations for Cousin Marriage in New Zealand
- Consanguinity Limits: First-cousin marriages are permitted, but unions between closer relatives (e.g., siblings, parent-child) are void under Section 17 of the Marriage Act 1955.
- DIA Approval: Applicants must submit certified birth certificates and proof of identity to the DIA, which may request further evidence of genetic relation if suspicions arise.
- 2026 Compliance Deadline: From 1 January 2026, all marriage applications will require digital identity verification via RealMe, aligning with the 2021 Act’s enhanced scrutiny protocols.
The Family Court retains discretion to annul marriages if fraud or coercion is proven, regardless of consanguinity status. Legal advice is recommended for complex cases involving distant relatives or cultural customary marriages.