Marriage is one of the most significant legal and financial events of your life in New Zealand. Beyond the wedding itself, marriage triggers changes to your legal property rights, insurance needs, tax situation, and estate planning. Most couples focus almost entirely on the wedding and overlook the financial admin that has lasting consequences.
In NZ, marriage and de facto relationships of 3+ years both trigger the Property Relationships Act — meaning assets accumulated during the relationship are split 50/50 on separation. The most urgent tasks before or just after marrying: update your KiwiSaver nominated beneficiary, update your will, and have an honest conversation about debt and finances.
Wedding Budget Reality Check
The average New Zealand wedding costs $25,000–$35,000. Costs vary significantly by venue, guest count, and region.
| Item | Budget Range |
|---|---|
| Venue hire | $3,000 – $12,000 |
| Catering (per head) | $80 – $180 |
| Photography | $2,500 – $6,000 |
| Videography | $2,000 – $5,000 |
| Celebrant | $500 – $1,500 |
| Flowers / décor | $1,500 – $5,000 |
| Dress / suit | $800 – $5,000 |
| Rings | $1,000 – $8,000 |
| Music / DJ | $800 – $2,500 |
| Transport | $300 – $1,500 |
| Invitations / stationery | $200 – $600 |
| Honeymoon | $3,000 – $15,000+ |
Lowest-cost legal option: A registry ceremony at a local council office costs around $200–$400 — you’re legally married just the same.
Budget rules that work
- Set a total budget before allocating to categories
- Decide your non-negotiables (the two or three things that matter most) and cut aggressively elsewhere
- Keep a 10% contingency buffer
- Avoid financing the wedding on credit — starting marriage with wedding debt is a common and avoidable mistake
Financial Conversations to Have Before You Marry
The leading cause of relationship breakdown is money conflict. These conversations are uncomfortable but essential:
Income and debt disclosure
- What does each person earn? (Including KiwiSaver contributions, bonuses, side income)
- What debts does each person carry? (Student loan, credit cards, car finance, personal loans, BNPL)
- What is each person’s credit history? (A poor credit history affects joint borrowing)
Spending and saving habits
- Are you a spender or a saver by default?
- What does discretionary spending look like? (Eating out, hobbies, clothes)
- Do you have different risk tolerances for investing?
Financial goals
- When do you want to buy a home?
- Do you plan to have children, and who would take parental leave?
- What does retirement look like to you?
Practical approach
- Will you combine finances fully, partially, or keep them separate? (See below)
- Who will manage day-to-day bills?
- How will you handle financial disagreements?
Combining Finances — Three Models
There is no single right answer. What matters is that both partners understand and agree on the approach.
| Model | How it works | Best for |
|---|---|---|
| Fully joint | All income into one account, all spending from one account | High-trust couples with similar incomes and spending habits |
| Fully separate | Each person pays agreed expenses, keeps own accounts | Couples with very different financial situations or values |
| Hybrid | Joint account for shared bills + mortgage; individual accounts for personal spending | Most couples — balances shared goals with individual autonomy |
The hybrid model is most commonly recommended: each partner contributes a fixed amount (either equal or proportional to income) to a joint account covering mortgage/rent, utilities, groceries, and shared savings. Personal spending comes from individual accounts, no questions asked.
The Property Relationships Act — What It Means for Married Couples
The Property Relationships Act 1976 (PRA) applies automatically to all married couples from the date of marriage (and to de facto couples after 3 years).
Key rules
- Relationship property = everything accumulated during the marriage (income, savings, investments, KiwiSaver contributions, chattels) — split 50/50 on separation
- Separate property = assets owned before marriage, gifts received, inheritances — protected IF kept separate (not commingled)
- The family home is always relationship property regardless of whose name is on the title or who paid the deposit
Protecting pre-relationship assets
If either of you is bringing significant pre-relationship assets (property, investments, a business) into the marriage, you need a contracting-out agreement (often called a pre-nup in NZ).
Requirements for a valid contracting-out agreement:
- Must be in writing
- Both parties must have independent legal advice
- Each party’s lawyer must witness the signing
- Cost: approximately $500–$1,500 per party
This is not just for the wealthy. Anyone owning property before marriage, or expecting a significant inheritance, should consider one.
Financial Checklist — Getting Married
Before the wedding
- Have all financial conversations (income, debt, goals, spending habits)
- Decide on your financial model (joint / separate / hybrid)
- Consider a contracting-out agreement if pre-relationship assets are significant (get legal advice early — leave at least 1 month)
- Set and stick to a wedding budget with a 10% contingency
- Avoid financing the wedding on credit cards or BNPL
Within 1 month of marrying
- Update your KiwiSaver nominated beneficiary — your KiwiSaver balance does not automatically go to your spouse on death unless nominated
- Update or write your will — without a will, the Administration Act (intestacy rules) may not distribute your estate as you’d want
- Update your life insurance beneficiary
- Notify IRD of your name change if applicable (via myIR)
- Update your bank accounts with new name
- Update your passport (Births Deaths and Marriages NZ)
- Update your driver’s licence (NZTA)
- Update your employer’s HR records
Insurance review
- Life insurance: does each partner have adequate cover now that you have shared financial commitments?
- Income protection: does each partner have cover if they can’t work?
- Contents and car insurance: combine policies where it saves money (get quotes both ways)
- Health insurance: check if your workplace scheme covers spouses, or get individual quotes
Within 3 months
- Review joint KiwiSaver contribution rates — is your combined savings on track for home ownership or retirement?
- Set up your agreed bank structure (joint account if using hybrid model)
- Create or update a shared budget and net worth tracker
Name Change Admin — Quick Reference
| Organisation | How to notify |
|---|---|
| IRD | myIR online |
| Passport | Births Deaths and Marriages NZ — new passport required |
| Driver’s licence | NZTA online |
| Bank accounts | In-branch with marriage certificate |
| Employer / HR | Payroll team |
| Electoral roll | enrol.vote.nz |
| Insurance policies | Contact each insurer |
| KiwiSaver provider | Contact your provider directly |
Next Steps
- Book a conversation — before the wedding, have the financial talks listed above
- Get legal advice if either of you owns property or has significant pre-relationship assets — a contracting-out agreement is worth the cost
- Update your KiwiSaver and will within 30 days of marrying — these are the two most commonly missed tasks
- Set up your bank structure within 60 days so you’re not winging shared finances
See also: Life Events hub · Separation and divorce finances · Property Relationships Act explained · KiwiSaver guides