Alex is Sprintlaw’s co-founder and principal lawyer. Alex previously worked at a top-tier firm as a lawyer specialising in technology and media contracts, and founded a digital agency which he sold in 2015.
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“Due diligence” is one of those phrases you’ll hear a lot when you’re buying a business, taking on an investor, signing a major contract, or entering a new partnership.
But when you’re running a small business, it’s easy to wonder what due diligence means in practice, and how it actually protects you.
In simple terms, due diligence is the process of carefully checking and verifying key information before you commit to a decision that could affect your business financially, legally, or operationally.
In this guide, we’ll break down what due diligence means in a New Zealand business context, when you should do it, what it normally covers, and how to approach it in a way that’s practical (and not overwhelming).
What Does Due Diligence Mean?
If we were to define due diligence in plain English, it’s:
- Taking reasonable steps to check the facts before you sign or pay for something important.
- Identifying risks early (legal, financial, compliance, operational) so you can make an informed decision.
- Confirming what you’re being told is accurate (and not just relying on goodwill or assumptions).
So, what does due diligence mean for a business owner in NZ? It usually means checking things like:
- Whether the numbers stack up (revenue, expenses, debts, cash flow, and any tax-related liabilities disclosed).
- Whether the key contracts are enforceable and fit for purpose.
- Whether the business is complying with laws that apply to its industry.
- Whether there are hidden liabilities (disputes, employment issues, unpaid amounts, defective products).
Due diligence isn’t about being suspicious. It’s about being responsible.
When you do it properly, you’re not just reducing risk - you’re also putting yourself in a stronger negotiating position, because you’ll understand what you’re actually buying (or agreeing to).
When Should Your Business Do Due Diligence?
Due diligence can come up in lots of day-to-day business scenarios, but it’s especially important when you’re about to make a decision that’s hard (or expensive) to undo.
Here are common situations where doing due diligence is a smart move.
Buying Or Selling A Business
If you’re buying a business, due diligence is where you check whether the business is what it claims to be - financially, legally and operationally.
If you’re selling, expect the buyer to request detailed information. Getting your documents in order early can speed up the deal and reduce the risk of last-minute renegotiations.
This is also where the right transaction documents matter (for example, the structure of the deal can change what liabilities you take on). If you’re in this stage, an Asset Sale Agreement is often central to defining exactly what is being sold and what is excluded.
Taking On An Investor Or Business Partner
Due diligence goes both ways here:
- You might do due diligence on the investor or partner (track record, expectations, ability to fund, reputational risk).
- They will almost certainly do due diligence on you (financials, IP ownership, team, compliance, contracts).
This is where your internal governance documents become important. If you have (or plan to have) multiple owners, a Shareholders Agreement can help set clear rules around decision-making, exits, funding obligations, and what happens if there’s a dispute.
Signing A Major Contract Or Long-Term Deal
Before you sign a big supplier contract, distribution arrangement, services agreement or long-term customer deal, due diligence might include:
- Checking the other party’s ability to deliver (and to pay).
- Reviewing the contract terms for unfair risk allocation (e.g. broad indemnities, one-sided termination rights, unclear deliverables).
- Confirming what happens if something goes wrong.
It’s much cheaper to review and fix terms before you sign than to deal with a dispute later.
Leasing Commercial Premises
A commercial lease can lock you into significant costs and obligations. Due diligence here could include:
- Understanding outgoings, rent review mechanisms, and any make-good obligations.
- Checking the permitted use clause aligns with what you actually do.
- Confirming the premises are suitable for your operations (including health and safety implications).
Because leases can be complex, it’s common to get a Commercial Lease Review before committing.
Launching A New Product, Service Or Online Platform
If you’re expanding into eCommerce or collecting customer information online, due diligence should include privacy and consumer law checks.
For many small businesses, this starts with having a properly drafted Privacy Policy that reflects what data you collect, why you collect it, and who you share it with.
What Does Due Diligence Usually Cover In NZ?
Due diligence is not one-size-fits-all. What you check should match the type of deal you’re doing and the risks involved.
That said, due diligence in New Zealand commonly covers the areas below.
1. Financial Due Diligence
This is where you sense-check the money side of the business or transaction. Depending on the situation, that might include:
- Profit and loss statements and balance sheets.
- Cash flow reports and forecasts.
- Bank statements and reconciliation.
- Customer concentration (e.g. if 70% of revenue comes from one client).
- Debts, liabilities, and any security interests.
- Tax-related records and filings (for example, GST and PAYE), where relevant.
Tip: financial due diligence is often best done alongside your accountant or a qualified tax adviser. The legal side is still critical too, because the “numbers” don’t always show contractual risk or compliance issues.
2. Legal Due Diligence
Legal due diligence is where you review the documents and legal relationships that keep the business running (and expose it to risk).
This might include reviewing:
- Business structure and ownership (company records, shareholder rights, governance).
- Material contracts (customers, suppliers, distributors, contractors).
- Intellectual property ownership (brand names, domain names, software, designs).
- Employment arrangements and workplace obligations.
- Insurance coverage and exclusions.
- Any disputes, claims or complaints (including threatened claims).
It’s also where you check whether the legal documents actually match how the business operates in reality. For example, if someone is treated like an employee day-to-day, but only has a “contractor agreement” on paper, that can become a major risk if there’s a dispute.
If you’re hiring or inheriting staff (for example, through a business purchase), clear documentation like an Employment Contract can be a key part of reducing misunderstandings and setting expectations.
3. Compliance And Regulatory Due Diligence
This is where you assess whether the business is complying with laws and regulations that apply to it.
Common NZ laws that often come up include:
- Fair Trading Act 1986 (misleading advertising, representations, promotions).
- Consumer Guarantees Act 1993 (consumer rights and guarantees that often apply when selling goods/services to consumers).
- Privacy Act 2020 (how personal information is collected, stored, used and shared).
- Health and Safety at Work Act 2015 (duties to provide a safe workplace, manage risks, and consult with workers).
- Employment Relations Act 2000 (employment agreements, good faith obligations, processes around changes).
Compliance due diligence matters because if there’s a breach, it may not show up until after you’ve taken over the business or signed the contract - and then you could be dealing with investigations, penalties, refunds, disputes, or reputational damage (depending on the issue).
4. Operational Due Diligence
This covers how the business actually runs day-to-day, including things that might not be obvious from financial statements or legal documents.
Depending on the transaction, you might look at:
- Key suppliers and how stable those relationships are.
- IT systems and cybersecurity practices.
- Staffing structure and whether the business depends heavily on one person.
- Stock, equipment, and maintenance records.
- Systems for customer complaints, refunds and quality control.
Operational due diligence is especially important if you’re buying a business where the “real value” is in processes, relationships, or know-how.
How Do You Actually Do Due Diligence (Without It Taking Over Your Life)?
Due diligence can sound like a giant, formal process - but for many small businesses, it’s about being systematic and getting the right people involved.
Here’s a practical approach you can use.
Step 1: Be Clear On The Decision You’re Making
Start by defining what you’re committing to:
- Are you buying shares or assets?
- Are you signing a long-term agreement with minimum spend?
- Are you taking on staff or inheriting liabilities?
- Are you entering a partnership where you’ll be jointly responsible for decisions?
Once you know what the decision is, you can focus your due diligence on the areas that could hurt you most if they’re wrong.
Step 2: Build A “Must-See” Document List
Due diligence is often a document-driven process. It helps to request key documents early so you’re not rushing right before signing.
Depending on the deal, that might include:
- Company records and ownership information.
- Financial statements and (where relevant) tax-related records.
- Key customer and supplier contracts.
- Lease documents.
- Employment and contractor agreements.
- IP registrations and assignments.
- Insurance policies.
If you’re buying a business, you might also work through a legal completion checklist so nothing gets missed at settlement. A Completion Checklist can help you think through what needs to happen and in what order.
Step 3: Check For “Deal Breakers” First
If you’re time-poor (and most founders are), focus on issues that could materially change your decision, such as:
- Undisclosed debt or major liabilities.
- Contracts that can be terminated immediately after the sale.
- Missing licences or non-compliance that could stop the business operating.
- Unclear ownership of IP (e.g. the brand or software doesn’t actually belong to the business).
- Key revenue depending on one contract that’s about to expire.
Once you’re comfortable there are no obvious red flags, you can work through the rest of the due diligence more confidently.
Step 4: Match The Findings To Your Negotiation Options
Due diligence isn’t just about finding problems - it’s about deciding what to do with what you find.
Common outcomes include:
- Proceeding because the risk is low or manageable.
- Renegotiating price because the risk reduces the value.
- Requesting warranties/indemnities in the contract (so the seller bears some risk if something is untrue).
- Making the deal conditional on certain issues being fixed before completion.
- Walking away if the risk is too high.
This is where the contract drafting really matters. The agreement should reflect what you discovered and what protections you need - not just a generic template.
Why Does Due Diligence Matter For Small Businesses?
When you’re a big company, you might be able to absorb a bad decision. When you’re a small business, one contract dispute or hidden liability can be enough to derail your cash flow for months.
So, the real value of due diligence is that it helps you:
Avoid Paying For Problems You Didn’t Create
Imagine you buy a business and later find out:
- the business has been making misleading claims in advertising,
- it’s been mishandling customer data, or
- it has staff disputes brewing behind the scenes.
Even if those issues started before you, you may still be the one dealing with the consequences after settlement, depending on the transaction structure and what the contract says.
Understand What You’re Actually Buying
Many businesses look great from the outside. Due diligence helps you confirm the value is real - whether that value is in:
- contracts,
- customer relationships,
- systems and processes,
- IP and brand strength, or
- staff capability.
This clarity helps you make smarter growth decisions and plan properly after the transaction.
Strengthen Your Bargaining Power
Due diligence gives you leverage. If you find something that needs fixing (like an unclear contract term or missing document), you can ask for:
- a price reduction,
- better contractual protections, or
- conditions that must be met before completion.
Without due diligence, you’re negotiating in the dark.
Protect Your Business “From Day One”
One of the biggest wins of due diligence is peace of mind. You’re building your business on solid foundations, not assumptions.
This mindset also applies outside of transactions - for example, if you’re entering a long-term lease, signing key supplier agreements, or expanding into new regulated areas.
Key Takeaways
- In a business context, due diligence is about doing reasonable checks before committing to a major decision, so you understand the risks and the facts.
- If you’re asking what due diligence means in practical terms, it usually involves verifying finances, contracts, compliance, and operational realities before you sign.
- Due diligence is especially important when buying or selling a business, taking on investors, signing major contracts, or entering a commercial lease.
- In New Zealand, due diligence commonly covers financial, legal, compliance, and operational checks, and may involve considering laws like the Fair Trading Act 1986, Consumer Guarantees Act 1993, Privacy Act 2020, and Health and Safety at Work Act 2015.
- A good due diligence process helps you avoid hidden liabilities, negotiate better terms, and set your business up with stronger legal foundations.
- Because due diligence depends on your specific deal and risk profile, it’s often worth getting tailored legal advice - and for financial or tax-related matters, input from a qualified accountant or tax adviser.
If you’d like help with due diligence, buying or selling a business, or reviewing the contracts you’re about to sign, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.
