Guarantors Explained: Rights & Obligations In New Zealand

If you’re running a small business, there’s a good chance you’ll come across a guarantee at some point - especially when you’re leasing premises, borrowing money, buying equipment on finance, or setting up trade credit with a supplier.

For many founders, signing “as guarantor” can feel like a box-ticking exercise to get the deal over the line. But a personal guarantee can have very real consequences if the business can’t pay.

Note: This article is general information only and doesn’t replace legal advice. Whether a guarantee is enforceable (and what rights or defences may apply) depends on the wording of the documents and the circumstances.

In this guide, we’ll break down guarantor rights and obligations in New Zealand in plain English, including what a guarantor is, what you’re actually agreeing to, what protections may be available in some situations, and the practical steps you can take to manage the risk before you sign.

What Is A Guarantor (And Why Do Small Businesses Get Asked For One)?

A guarantor is a person (or sometimes another company) who agrees to be responsible for someone else’s debt or obligations if that person doesn’t meet them.

In the small business context, this usually looks like:

• A director personally guaranteeing the company’s obligations under a lease, loan, or supply agreement; or
• A related party (for example, a parent company) guaranteeing the obligations of another business entity.

Even if you operate through a company (which typically provides limited liability), lenders and landlords often ask for personal guarantees because:

• new businesses may not have a long trading history;
• the company may have limited assets; and
• the creditor wants an extra layer of security if things go wrong.

It’s also common to see guarantees bundled into other documents, such as loan documents, commercial leases, or even supplier credit applications (where the “guarantee” is a clause tucked into the fine print).

Because guarantees often sit alongside other agreements, it’s worth being clear on your broader legal setup too - for example, how your business is structured and who is on the hook for what. If you’re still deciding between structures, setting up properly early matters, whether you’re a sole trader or using Operating As A Sole Trader or incorporating a company.

Guarantor Rights And Obligations: What You’re Really Signing Up For

The phrase “guarantor rights and obligations” is exactly what it sounds like: the legal responsibilities you take on as a guarantor, and the protections (if any) you have in return.

In practice, the obligations side is usually heavier than people expect. Common obligations include:

• Paying the debt if the borrower (often your company) doesn’t pay.
• Paying additional costs such as interest, default interest, legal fees, enforcement costs, and debt collection expenses (where the documents allow it and the costs are properly recoverable).
• Covering ongoing obligations (for example, rent, outgoings, make-good obligations under a lease, or continuing supply charges).
• Being liable “on demand”, meaning the creditor can ask the guarantor to pay as soon as the borrower defaults (and sometimes without first taking every possible step against the borrower).

Your obligations depend heavily on the wording of the guarantee, but there are a few themes we regularly see:

1) You Might Be Liable For More Than You Think

Many guarantees are drafted widely. They might cover “all monies” owed now or in the future, not just a specific invoice or a single loan amount.

That means the risk isn’t always limited to what you believe you’re guaranteeing today.

2) Your Liability Can Be “Joint And Several”

If there are multiple guarantors, the guarantee may say liability is joint and several. In simple terms, the creditor can pursue:

• all guarantors together; or
• one guarantor alone for the full amount.

Even if you have a private arrangement with a co-founder about “splitting things 50/50”, that arrangement generally won’t limit what the creditor can recover from you under the guarantee (though it may be relevant between the guarantors themselves).

3) A Guarantee Can Outlive The Relationship

A guarantee might continue even if:

• you resign as a director;
• you sell your shares;
• the business changes hands; or
• the contract renews, varies, or “rolls over”.

This is why it’s so important to check the “release” mechanics (if any) and the effect of amendments. If the business is being sold or restructured, you should look carefully at how obligations carry across - including whether the buyer or new owners should replace the existing guarantee. This tends to come up in transactions and Changing Company Ownership scenarios.

4) You’re Often Giving Up Defences

Many guarantees are written so that the guarantor agrees not to rely on certain arguments to resist enforcement, such as:

• “I didn’t know the borrower was in trouble.”
• “The creditor should have chased the borrower first.”
• “The creditor changed the contract.”

Exactly which defences are excluded (and whether any remain available) depends on the drafting and the facts. This is one of the biggest reasons to get legal advice before signing.

Common Guarantee Scenarios For NZ Small Businesses

Guarantees show up in lots of “normal” business moments. Here are the most common situations we see for small businesses in New Zealand.

Commercial Leases (And Personal Guarantees)

If you’re signing a commercial lease, a landlord may require directors to sign a personal guarantee - especially for a new company, a small company, or a tenant with limited assets.

The guarantee might cover:

• rent, outgoings, and GST;
• interest on late payments;
• legal costs if the landlord has to enforce (to the extent recoverable under the lease/guarantee and applicable law);
• make-good obligations at the end of the lease; and
• rent or costs during holding over or renewal periods.

Because leases can be long-term and high-value, this is one of the highest risk guarantee contexts for founders. It’s also where a careful Lease Review can make a big difference before you sign anything.

Bank Lending And Business Finance

For lending, guarantees can come with other security documents (like a general security arrangement over business assets).

It’s common for lenders to require:

• personal guarantees from directors;
• cross-guarantees between related companies; and/or
• security interests over assets.

If you’re raising funds, bringing in new investors, or changing your capital structure, it’s worth thinking about how guarantees (and broader commitments) align with your internal arrangements, like a Shareholders Agreement - particularly around who can commit the business to major financial obligations.

Supplier Credit Accounts And Trade Terms

Suppliers often offer credit accounts “30 days EOM” or similar. The credit application might include a personal guarantee clause, sometimes buried in the terms.

This can catch business owners out because it doesn’t feel like “borrowing” - but it can still create personal liability if the business gets behind on payments.

Contracts With “Guarantee” Clauses

Sometimes you’ll see guarantees in unexpected places, like:

• equipment rental arrangements;
• service contracts (especially where the provider is extending credit);
• software or managed services agreements with minimum terms and early termination costs.

If the contract is bundled and complicated, it can help to step back and ask: “Is there a personal guarantee in here?” and “What is the maximum exposure?”

Do Guarantors Have Rights In New Zealand?

Yes - guarantors can have rights and protections, but they’re not automatic and they can be limited by the document wording and the circumstances. Your position will depend on the guarantee, the underlying contract, and general legal principles around contracts and enforcement.

Some commonly relevant rights and protections (in the right circumstances) include:

The Right To Understand What You’re Signing

A guarantee is a contract. Like any contract, you should understand the key terms before you sign - including:

• what obligations are covered;
• whether liability is capped or unlimited;
• how long it lasts;
• what triggers enforcement; and
• what security (if any) supports the obligation.

If there’s been misleading conduct around what you were signing, that can raise issues under the Fair Trading Act 1986 (for example, if you were told the guarantee was “just a formality” when it wasn’t). These situations are fact-specific, so it’s important to get advice quickly if you think something wasn’t properly explained.

Rights Around Contract Changes (Variations)

One common question is: “If the main contract changes, am I still bound as guarantor?”

The answer depends on the guarantee wording and the nature of the change. Many guarantees are drafted to keep the guarantor on the hook even if the underlying agreement is varied, renewed, or extended. In other cases, a significant change (especially one not contemplated by the guarantee) may affect enforceability - but you should get advice before relying on that.

As a practical step, if you’re asked to sign a variation or extension, it’s worth checking whether it:

• increases your exposure;
• extends the term; or
• changes key obligations (like rent, interest, or repayment timing).

Contract changes should be carefully documented. If you’re renegotiating terms, it may also raise broader questions around How To Change A Contract properly, so everyone is clear on what applies and when.

Rights To Seek Recovery From The Borrower (Indemnity/Subrogation)

If you pay a debt under a guarantee, you may have rights to seek recovery from the borrower (for example, your company), or to step into the creditor’s shoes to pursue the borrower, depending on the documents and the circumstances.

In plain English: you don’t necessarily have to wear the cost forever.

However, if the business is insolvent or has no assets, “having the right” to recover doesn’t always translate into actually getting your money back. This is why you should treat guarantees as real risk, not theoretical risk.

Rights Between Co-Guarantors (Contribution)

If there are multiple guarantors, you might be able to seek contribution from the others after you’ve paid more than your “share”.

But again, that doesn’t stop the creditor from chasing you for the full amount if the guarantee allows it.

Some Rights Are Only As Good As Your Paperwork

It’s common for founders to assume that their internal arrangements (like “we’ll split liabilities 50/50”) will automatically protect them.

Those arrangements can help, but only if they’re documented properly and actually enforceable. This is one of the reasons it’s helpful to have the right governance documents in place, like a tailored Company Constitution, especially where decision-making authority and director powers matter.

How To Manage Guarantee Risk Before You Sign (Practical Tips)

Guarantees aren’t always avoidable - but there are often ways to reduce risk or at least go in with your eyes open. Here are practical steps we often recommend for small business owners.

1) Ask If The Guarantee Can Be Removed Or Replaced

It might feel awkward, but it’s a legitimate commercial ask. Depending on the deal, you may be able to:

• remove the guarantee entirely (especially once the business has a trading history);
• replace it with a bond, bank guarantee, or higher deposit;
• offer security over business assets instead of personal assets; or
• limit the guarantee to certain obligations only.

2) Negotiate A Cap (Maximum Liability)

One of the biggest red flags is an unlimited “all monies” guarantee.

Where possible, negotiate:

• a dollar cap (for example, “up to $50,000”);
• a time cap (for example, the first 12 months of the lease); or
• a cap linked to a clear metric (for example, 3 months’ rent and outgoings).

If the other side won’t cap it, you at least want to understand the realistic worst-case scenario.

3) Check Whether It’s A Guarantee Or An Indemnity (Or Both)

Many documents are called “Guarantee and Indemnity”. While the labels aren’t decisive on their own, an indemnity is often drafted to create a more direct, stand-alone obligation to pay (and may operate differently from a guarantee).

This distinction can matter in a dispute, and it’s one of those areas where getting a lawyer to review the document can save you serious trouble later.

4) Make Sure There’s A Clear Release Mechanism

If you’re stepping away from the business, or the business is being sold, you should never assume a guarantee automatically ends.

You’ll want to confirm:

• what triggers release (repayment, lease assignment, refinancing, etc.);
• who must sign the release (the creditor, landlord, lender);
• whether release covers past liabilities or only future liabilities; and
• whether any new guarantor is taking your place.

5) Don’t Ignore The “Small Print” In Connected Documents

A guarantee might be only one piece of the puzzle. For example, a commercial lease could sit alongside:

• a deed of assignment, if the lease is being transferred;
• a rent abatement agreement (temporary rent reduction);
• a side letter; or
• a variation/extension.

These documents can change your obligations (and your risk) in ways that aren’t obvious at first glance.

6) Get Your Own Advice Before Signing

This is one of those “measure twice, cut once” legal moments.

A quick review can help you spot whether:

• your liability is wider than you think;
• you’re agreeing to an indemnity that goes beyond a standard guarantee;
• there are negotiation points you can realistically push back on; and
• the documents fit your business structure and plans.

If you’re reviewing a lease or other high-value agreement, it’s often cheaper to get it checked upfront than to deal with a dispute later.

Key Takeaways

• Guarantor rights and obligations matter because a personal guarantee can make you personally liable for business debts, even if you trade through a company.
• Guarantees often appear in commercial leases, business lending, and supplier credit applications, sometimes buried in standard terms.
• Your obligations may include not just the main debt, but also interest, enforcement costs, and ongoing contractual obligations.
• Many guarantees are drafted broadly (for example, “all monies”) and can include joint and several liability where a creditor can pursue one guarantor for the full amount.
• Guarantors can have rights and protections in some circumstances - including rights related to misleading conduct and the ability to seek recovery from the borrower - but the scope of those rights depends heavily on the document wording and the circumstances.
• You can often manage risk by negotiating caps, narrowing the scope, confirming release terms, and getting a lawyer to review the documents before you sign.

If you’d like help reviewing a guarantee (or the lease/loan/contract it sits within), you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.