Separation Agreements in New Zealand: What They Cover, and Why They Are Not Required

A separation agreement is a written record of how a separating couple has agreed to divide property, arrange the care of any children, and handle shared money and debts. It is not a legal requirement to separate in New Zealand, but it can matter a great deal later.

This is general information about New Zealand law, not legal advice. For your own situation, consult a lawyer or your local Community Law centre.

What a separation agreement is

A separation agreement is a written agreement between two people who are ending their relationship, made without going to court. It sets out what each partner has agreed to once they separate: things like who a child will live with and how contact will work, who keeps which assets, who is responsible for a mortgage or other shared debt, and sometimes ongoing financial support between the partners. Its main purpose is to make the terms of the separation clear, so both people are working from the same understanding rather than relying on memory or an informal conversation.

Not a legal requirement

There is no law requiring a couple to have a separation agreement, a court order, or any other formal step simply to separate. A couple can separate, and stay separated, without ever putting anything in writing. A separation agreement is optional, and its value is practical rather than compulsory: it reduces the risk of a later disagreement about what was actually decided.

Using it as proof of the date you separated

The date a couple started living apart matters later. To apply for a dissolution of marriage or civil union, the couple generally needs to show two years of separation. A separation agreement, or a formal Family Court Separation Order, that has been in place for that period can be used as evidence of when the separation began and that it has continued. This is one of the practical reasons couples choose to put something in writing even though it is not legally required.

If it covers dividing property: independent legal advice is required

A separation agreement can deal with almost anything the couple agrees on, but if it sets out how relationship property will be divided, there is a formal requirement that applies. Each partner needs to get independent legal advice, from their own lawyer, about the agreement before signing it, and a lawyer for each partner needs to sign a certificate confirming that advice was given. Without that, an agreement dividing property is at real risk of not being enforceable if a dispute comes up later.

This requirement is the same kind of formality that applies under the Property (Relationships) Act 1976 to a couple's own binding agreement about how their property is owned or will be divided, sometimes referred to as a contracting out agreement or, informally, a prenuptial agreement. Whether that agreement is made while still together, as part of separating, or after a relationship has ended, the same basic protection applies: both people need their own lawyer's advice before it can bind them.

If you cannot agree

A separation agreement only works where both partners are willing to agree on the terms. Where a couple cannot agree on how to divide relationship property, either partner can apply to the Family Court, which can identify the relationship property, consider valuations, and decide how it is divided under the general rule of equal sharing that applies to most relationships of three years or more.

Related pages

For how the two year separation period feeds into ending a marriage or civil union, see divorce and dissolution. For the wider picture of family law in New Zealand, see the family law guide.

Frequently Asked Questions

Do I need a separation agreement to separate in New Zealand?

No. There is no legal requirement to have a separation agreement, or any other formal document, simply to separate from a partner. A separation agreement is optional and mainly useful for making the terms of the separation clear and for later evidence of the date you began living apart.

What can a separation agreement cover?

A separation agreement can cover practical matters agreed between the partners, such as arrangements for caring for children, who is responsible for a mortgage or other debts, and how property will be divided. It is a private agreement and does not involve the court unless a dispute arises later.

Does a separation agreement need a lawyer?

If the agreement covers how property will be divided, yes. Each partner needs independent legal advice from their own lawyer, and a lawyer for each partner must sign a certificate confirming that advice was given, or the property division risks not being enforceable.

Is a separation agreement the same as a contracting out agreement?

They serve a related purpose but are not automatically the same document. A contracting out agreement under the Property (Relationships) Act 1976 is a couple's own binding agreement about property, which can be made before, during, or after a relationship. A separation agreement's property clauses need to meet the same kind of independent legal advice formalities to be enforceable.

Can a separation agreement help prove when we separated?

Yes. A separation agreement, or a Family Court Separation Order, that has been in force for the relevant period can be used as evidence of living apart, which matters if either partner later applies for a dissolution of marriage or civil union.