How to Write a Will in New Zealand (2025 Guide)

Writing a will is one of the most important documents you'll ever create. This comprehensive guide walks you through everything you need to know about writing a will in New Zealand, from legal requirements to avoiding common mistakes that could invalidate your will or cause family disputes.

Why You Need a Will

A will is your legal instruction for how your assets should be distributed after your death. Without a valid will, New Zealand's intestacy laws determine who inherits your estate - and this may not align with your wishes.

What Happens If You Die Without a Will in NZ

When someone dies intestate (without a will), the Administration Act 1969 applies:

• Married/in a relationship with children: Partner gets $155,000 + personal items + 1/3 of remainder; children share remaining 2/3
• Married/in a relationship, no children: Partner inherits everything
• Children but no partner: Children share everything equally
• No partner or children: Parents inherit, then siblings, then more distant relatives
• No family: Estate goes to the government

Major problems with intestacy:

• Children under 20 inherit their share at age 20 (often too young to manage wealth)
• No choice in who administers your estate (court appoints administrator)
• Longer probate process and higher costs
• No provision for step-children, unmarried partners, or specific wishes
• No control over guardianship of minor children
• Family disputes more likely without clear written instructions

Legal Requirements for a Valid Will in New Zealand

For your will to be legally valid in New Zealand, it must meet these requirements under the Wills Act 2007:

1. Capacity Requirements

You must be:

• 18 years or older (exceptions: married persons, members of armed forces on active service)
• Of sound mind: Understanding what a will is, knowing what property you have, and understanding who might have claims on your estate
• Acting voluntarily: Not under duress, undue influence, or coercion

2. Format Requirements

• Must be in writing: Typed or handwritten (handwritten wills are valid)
• Signed by you: Your signature at the end of the will
• Witnessed properly: Two independent witnesses present when you sign

3. Witnessing Requirements

Your will must be witnessed by two people who:

• Are both present when you sign your will
• See you sign (or acknowledge your earlier signature)
• Sign the will themselves in your presence
• Are over 18 years old
• Are mentally capable of understanding what they're witnessing
• Are NOT beneficiaries or married/in a relationship with beneficiaries (critical!)

Step-by-Step Guide to Writing Your Will

Step 1: Take Inventory of Your Assets

List everything you own:

• Real estate: Home, rental properties, land, overseas property
• Financial assets: Bank accounts, investments, KiwiSaver, shares
• Personal property: Vehicles, jewelry, art, collectibles, furniture
• Business interests: Company shares, partnerships, sole trader businesses
• Digital assets: Cryptocurrency, online accounts, intellectual property
• Life insurance: Note beneficiaries (may pass outside your will)

Don't worry about exact values - these change over time. Focus on identifying all significant assets.

Step 2: Decide Who Gets What

Think about:

• Specific gifts: Particular items to specific people (grandmother's ring to granddaughter)
• Cash legacies: Specific dollar amounts to named people
• Residuary estate: Everything else after specific gifts and debts paid
• Contingent beneficiaries: Who inherits if primary beneficiary dies before you
• Charitable donations: Gifts to charities or causes you support

Step 3: Choose Your Executor(s)

Your executor administers your estate after death. This person will:

• Apply for probate (court approval to administer the estate)
• Identify and secure all your assets
• Pay debts, taxes, and funeral expenses
• Distribute assets to beneficiaries according to your will
• Manage estate for months or even years (complex estates)

Choosing an executor:

• Select someone trustworthy, organized, and capable
• Consider appointing two co-executors (they act together)
• Name an alternate executor in case your first choice can't serve
• Professional executors (lawyers, trust companies) charge fees but provide expertise
• Executors can also be beneficiaries

Step 4: Appoint Guardians for Minor Children

If you have children under 18, your will should name guardians to care for them if both parents die. Consider:

• Who? Family members or close friends who share your values
• Willing? Discuss with potential guardians before naming them
• Capable? Age, health, financial stability, and lifestyle
• Location? Would children need to relocate?
• Alternates? Name backup guardians in case first choice can't serve

Note: Court makes final guardianship decisions based on children's best interests, but your wishes carry significant weight.

Step 5: Consider Testamentary Trusts

A testamentary trust is created by your will and comes into effect after death. Benefits include:

• Minor children: Manage assets until children are mature enough (e.g., age 25)
• Vulnerable beneficiaries: Protect beneficiaries with special needs, addiction, or poor money management
• Asset protection: Shield beneficiaries' inheritance from creditors, bankruptcy, or relationship property
• Blended families: Provide for spouse while ensuring children from first marriage inherit
• Tax efficiency: Income splitting opportunities for family

Step 6: Draft Your Will

You have three options:

Option 1: DIY Will ($0-$200)

Pros: Cheap, immediate, convenient

Cons: High risk of errors, ambiguity, invalidity; no professional advice; may not address complex situations

Risk: DIY will errors cost families thousands in legal disputes and probate delays

Option 2: Online Will Services ($50-$200)

Pros: More guidance than blank DIY, document templates, some legal checks

Cons: Generic templates may not fit your situation, no personalized advice, no relationship property or complex estate planning

Best for: Very simple estates (single person, few assets, no children, straightforward distribution)

Option 3: Lawyer-Drafted Will ($450-$800)

Pros: Professional advice, customized to your situation, legally sound, addresses complex issues, executor guidance

Cons: Higher upfront cost

Best for: Anyone with property, children, business interests, or complex family situations (highly recommended)

Step 7: Include Essential Will Clauses

Every properly drafted will should include:

• Revocation clause: States this will revokes all previous wills
• Executor appointment: Names executors and alternates, grants powers
• Guardian appointment: Names guardians for minor children
• Specific bequests: Gifts of particular items or amounts
• Residuary clause: Distribution of everything not specifically mentioned
• Contingency provisions: What happens if beneficiaries predecease you
• Survivorship clause: Beneficiary must survive you by 30 days to inherit
• Attestation clause: Confirms witnessing procedure was followed

Step 8: Sign and Witness Your Will

The signing ceremony:

1. Gather everyone: You and two witnesses together in one room
2. You sign: Sign at the end of your will (bottom of last page)
3. Declare: Tell witnesses "This is my will, and I'm asking you to witness my signature"
4. Witnesses sign: Both witnesses sign in your presence and each other's presence
5. Witnesses add details: Full names, addresses, occupations
6. Date: Ensure the will is dated

Step 9: Store Your Will Safely

Your executor needs to find the original will (copies are not sufficient for probate). Storage options:

• With your lawyer: Most law firms offer free secure storage
• At home: Fireproof safe or secure filing cabinet
• High Court: Pay a small fee to deposit with the court
• NOT in a bank safety deposit box: Executor needs probate to access it (catch-22)

Important: Tell your executor where your will is stored. Give them a copy (clearly marked "COPY"), but keep the original safe.

Step 10: Review and Update Regularly

Review your will every 3-5 years and after:

• Marriage or entering a de facto relationship (marriage revokes your will!)
• Divorce or separation
• Birth or adoption of children
• Death of beneficiaries or executors
• Significant asset changes (buying/selling property, inheritance)
• Moving overseas or returning to NZ
• Changes in family relationships or circumstances
• Tax or estate planning law changes

Common Will Writing Mistakes to Avoid

1. Ambiguous or Unclear Language

Mistake: "I leave my property to my children equally."

Problem: Does "property" mean just real estate, or all possessions? If one child dies, do their children inherit their share?

Solution: Use precise legal language: "I give my real estate at [address] to my children [names] in equal shares, and if any child predeceases me, that child's share passes to their children in equal shares."

2. Not Considering Relationship Property

Mistake: Assuming you can give away all your assets in your will.

Problem: The Property (Relationships) Act 1976 means relationship property is split 50/50 with your spouse/partner regardless of your will.

Solution: Understand what's relationship property vs separate property. Consider contracting out agreements if needed. Get professional advice.

3. Forgetting About Debt

Mistake: Leaving specific assets without considering mortgages or other debts.

Problem: "I leave my house to my daughter and $100,000 to my son." If the house has a $300,000 mortgage and the estate only has $100,000 cash, the son gets his $100,000 but the daughter inherits the house with the debt.

Solution: Consider whether debts should be paid from the general estate before specific gifts, or whether beneficiaries receive assets "subject to" existing debts.

4. Inadequate Provision for Dependents

Mistake: Leaving inadequate provision (or nothing) for spouse, children, or other dependents.

Problem: Family Protection Act 1955 allows eligible people to challenge your will if they're not adequately provided for.

Solution: Make reasonable provision for spouse, children, and dependents. If excluding someone, explain reasons in a separate letter (not in the will itself). Get advice on family protection claims risk.

5. Outdated Beneficiaries or Executors

Mistake: Not updating your will after life changes (divorce, remarriage, deaths, new children).

Problem: Your ex-spouse might still inherit, or deceased beneficiaries/executors named in the will.

Solution: Review will every 3-5 years and after major life events. Note: Marriage automatically revokes your will; divorce removes your ex-spouse as beneficiary but doesn't revoke the will.

6. Failing to Consider Tax Implications

Mistake: Not considering bright-line test, trust income taxation, or relationship property taxation.

Problem: Estate might face unexpected tax bills, reducing what beneficiaries receive.

Solution: Professional will drafting includes tax planning advice to minimize estate taxation.

7. DIY Wills with Complex Situations

Mistake: Using a DIY will kit for blended families, business ownership, trusts, or valuable estates.

Problem: Complex situations require professional advice to address relationship property, business succession, trust coordination, and family protection.

Solution: If you have anything beyond a simple estate (single person, few assets, no children), get professional advice. The cost is far less than the problems DIY wills create.

Will vs. Family Trust: What's the Difference?

The Bottom Line: Most people need BOTH a will and a trust. The trust protects assets during your lifetime, and the will distributes personal items and any assets not in the trust. Many wills include a "pour-over" clause that transfers any remaining assets to an existing trust.

Specific Situations: Tailoring Your Will

Blended Families

If you have children from previous relationships, your will needs careful planning:

• Balance provision for current spouse and children from first marriage
• Consider life interest trusts (spouse lives in home; children inherit after spouse's death)
• Use testamentary trusts to protect children's inheritance
• Review relationship property implications
• Discuss plans with family to prevent disputes

Business Owners

If you own a business, your will should address:

• Who inherits business interests (consider capability to run business)
• Business continuation or sale instructions
• Buy-sell agreements with business partners
• Valuation methods for business interests
• Tax-efficient transfer strategies

International Assets

If you own property overseas:

• Consider separate wills for each country (real estate governed by local law)
• Coordinate wills to avoid conflicts or gaps
• Understand inheritance tax implications in other countries
• Use NZ will for NZ assets, foreign wills for foreign assets

Same-Sex Couples

Same-sex couples have the same rights as opposite-sex couples in NZ, but should:

• Ensure wills clearly state your intentions
• Name your partner explicitly (don't rely on "spouse" if relationship not legally recognized)
• Consider guardianship of children carefully
• Review relationship property implications

Free Will Writing Checklist

Conclusion: Don't Delay Writing Your Will

Writing a will isn't pleasant to think about, but it's one of the most important things you can do for your family. Without a will, the government decides what happens to your assets, who raises your children, and how your estate is administered. The process takes months longer and costs thousands more.

A properly drafted will:

• Ensures your wishes are followed
• Protects your family from disputes and delays
• Provides for children and dependents according to your intentions
• Names trusted people to administer your estate and care for your children
• Can save your family thousands in probate costs and legal fees

While DIY wills are legal, the risks far outweigh the small cost savings. Professional will drafting costs from $450 and ensures your will is legally sound, addresses complex issues, and achieves your goals. The peace of mind is worth far more than the cost.

Don't wait. Make your will today and give your family the gift of clarity, protection, and peace of mind.

After you die: the probate process

A valid will is the start, not the end. When you die, the executor named in your will usually needs a grant of probate from the High Court of New Zealand before banks, share registries and Land Information New Zealand will release assets held in your sole name. Under section 65 of the Administration Act 1969, probate is generally required where any single asset is worth more than $15,000 or real estate is held solely.

For a straightforward estate the High Court usually issues the grant within 4 to 8 weeks of filing. The court filing fee is fixed at $200, and lawyer fees for a simple application typically range from $2,000 to $4,000 plus GST, paid from the estate. Writing the right will today makes the probate process simpler for your executor — see the probate guide for the full process, timeline and cost in New Zealand.