If you’ve been left out of a will, or given far less than you expected, you’re probably asking one question: can I actually win this? The honest answer is that it depends — on your relationship to the deceased, the reason you were excluded, and how quickly you act. This guide walks through what New Zealand courts actually look at, and what genuinely improves or weakens your chances.

Who Is Allowed to Contest a Will in NZ?

Not everyone who feels hard done by can bring a claim. New Zealand law recognises specific categories of claimant, primarily under the Family Protection Act 1955 and the Property (Relationships) Act 1976. See our full guide on who can contest a will for the complete breakdown. Generally, this includes:

• Spouses and civil union or de facto partners
• Children of the deceased, including adopted children
• Grandchildren and stepchildren who were being financially maintained by the deceased
• In some cases, other dependants who can show the deceased had a duty to provide for them

If you don’t fall into one of these categories, your legal options are limited, regardless of how the will’s contents feel to you personally.

What Courts Actually Look At

Contesting a will in New Zealand isn’t about arguing the will is “unfair” in a general sense. Courts apply a specific test: did the will-maker fail in their moral duty to adequately provide for the claimant? This is a narrower question than it sounds, and it’s where most claims succeed or fail.

Factors that tend to strengthen a claim include:

• A close, dependent relationship with the deceased (spouse, minor or dependent children)
• Evidence the claimant was financially reliant on the deceased before their death
• A will that leaves the claimant with nothing or a token amount, without clear justification
• No documented estrangement or reasonable explanation for exclusion

Factors that tend to weaken a claim include:

• Distant family relationships (siblings, cousins, or other extended family without dependency)
• Evidence of long-term estrangement that the will-maker documented or explained
• Claims brought well outside the statutory time limits
• A will that already makes reasonable, if unequal, provision
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How Long You Have to Act

Timing is one of the biggest factors that determines whether a claim even gets heard, separate from its merits. In general:

• Family Protection Act claims must usually be filed within 12 months of probate being granted
• Property (Relationships) Act claims typically have a six-month window from the date of probate

Courts can sometimes allow late claims in limited circumstances, but this isn’t guaranteed and reduces your bargaining position considerably. If you’re considering a claim, getting advice early is one of the most reliable ways to protect your chances.

What “Success” Usually Looks Like

It’s worth setting expectations correctly. Successfully contesting a will rarely means the entire will is thrown out. More commonly, a successful claim results in:

• A variation to the distribution, increasing the claimant’s share
• A negotiated settlement between the parties before the matter reaches a full hearing
• Provision being made from the estate specifically to meet the claimant’s needs, rather than a full rewrite of the deceased’s wishes

Many contested will matters settle before trial, which is often a faster and less costly outcome for everyone involved.

How Agile Legal Can Help

Whether you’re considering a claim or you’re an executor facing one, an early, honest assessment of the merits makes a significant difference to how the matter unfolds. Agile Legal advises both claimants and estates on will disputes, family provision claims, and estate litigation across New Zealand — as part of our broader will contest and estate litigation services. If capacity is a factor in your situation, see our guide on contesting a will due to dementia, or if cost is your main concern, see how much it costs to contest a will.

Get in touch with our estate litigation team for a confidential assessment of your situation.

This article provides general information only and does not constitute legal advice. Every estate claim depends on its specific facts — speak with a lawyer about your circumstances.

Frequently Asked Questions

Who can contest a will in New Zealand?

Generally, spouses and partners, children, and dependent grandchildren or stepchildren of the deceased. Eligibility depends on which legal claim applies to your situation.

What are the chances of successfully contesting a will in NZ?

Chances are strongest for spouses, partners, and children left with little or no provision. Claims from distant relatives or those filed late are far less likely to succeed.

How long do I have to contest a will in New Zealand?

Typically 12 months from probate for Family Protection Act claims, and six months for Property (Relationships) Act claims. Early advice is important.

Does contesting a will guarantee a payout?

No. Courts assess whether the deceased failed their moral duty to provide, not whether the split feels fair, and most successful outcomes are a variation rather than a full overturn.