Vendor Due Diligence For Selling, Merging Or Partnering

If you’re thinking about selling your business, merging with another business, or bringing in a strategic partner, you’ve probably been told “you’ll need to do due diligence”.

Most business owners expect the buyer (or incoming investor/partner) to do that due diligence. But there’s another step that can make your transaction smoother, faster, and more valuable: vendor due diligence.

Vendor due diligence is where you, as the seller or current owner, prepare your business for external scrutiny before the other side starts asking questions. When it’s done well, it can reduce surprises, speed up negotiations, and help you stay in control of the process (instead of scrambling to respond to requests at the last minute).

Below, we’ll walk you through what vendor due diligence involves in Australia, what to prepare, what commonly goes wrong, and how to approach it in a practical way that protects your position.

What Is Vendor Due Diligence (And When Is It Worth Doing)?

Vendor due diligence is a pre-transaction review you do on your own business, usually with your lawyer and (separately) your accountant or tax adviser, so you can identify issues early and present the business clearly to a buyer, merger counterparty, or incoming partner.

Think of it as doing your own “health check” before someone else comes in and examines the business under a microscope.

How Vendor Due Diligence Differs From Buyer Due Diligence

In a typical transaction:

• Buyer due diligence is where the buyer investigates your business to decide whether to proceed, what price to pay, and what protections they need in the contract.
• Vendor due diligence is where you prepare information (and fix issues) before the buyer asks, so the buyer’s diligence process becomes more predictable and less disruptive.

Vendor due diligence doesn’t replace buyer due diligence. The buyer will still run their own checks. But it can help you anticipate what they’ll find, and shape how it’s presented.

When Vendor Due Diligence Is Most Useful

Vendor due diligence is particularly useful if:

• you want a faster sale process (for example, you’re targeting completion within a tight timeframe)
• you expect multiple interested buyers and you want to run a clean, competitive process
• your business has complexity (staff, contractors, licences, IP, key customer contracts, recurring revenue)
• you’re planning a merger or joint venture, where both sides will scrutinise each other
• you’re bringing on an investor or strategic partner and need to justify valuation

Even for smaller deals, vendor due diligence is often worth it because it helps you avoid the most common problem in transactions: preventable last-minute surprises.

What Does Vendor Due Diligence Cover? A Practical Checklist

Vendor due diligence usually covers legal, financial, tax, and operational areas. Your accountant or tax adviser will often lead the financial/tax side, and your lawyer will lead the legal and risk side. (This article is general information only and isn’t financial or tax advice - if you’re preparing to sell, merge or take on a partner, it’s important to get tailored accounting and tax advice for your business.)

Here’s a practical checklist of areas buyers commonly ask about (and what you can prepare before they ask).

1. Your Business Structure And Ownership

Before you negotiate price or terms, a buyer will want to understand what they are actually buying (and who owns it).

• Confirm the current legal entity (company, sole trader, partnership, trust).
• Confirm who owns shares/units and whether there are any side agreements.
• Check your corporate records are up to date (ASIC details, share register, director appointments/resignations).
• If you operate through a company, check whether your Company Constitution contains restrictions that could affect a sale (for example, share transfer approvals).
• If you have co-owners, check what your Shareholders Agreement says about exits, approvals, drag/tag rights, and valuation mechanics.

Getting these basics right early can prevent delays later, especially if the buyer is acquiring shares (rather than just assets).

2. Financials, Revenue Quality, And “Normalisation”

On the commercial side, buyers generally care about two things:

• What the business earns (historical performance), and
• How reliable and transferable that earnings stream is.

Common preparation steps include (ideally with your accountant):

• Prepare clear profit and loss statements and balance sheets (buyers often ask for multiple reporting periods; what’s appropriate depends on your business and the deal).
• Explain any “one-off” costs or unusual spikes/drops.
• Identify related-party transactions (for example, owner’s rent, family wages, director loans) and document them clearly.
• Map recurring revenue, churn, and customer concentration (buyers get nervous if one customer makes up a large portion of revenue).

While this is often an accountant-led exercise, your legal position also benefits when financial information is well-organised, because it reduces the risk of allegations that something was misleading or incomplete.

3. Key Contracts (Customers, Suppliers, Leases, Partners)

Contracts are often where deals slow down. That’s because contracts answer the buyer’s biggest question: “Will the business keep making money after settlement?”

For vendor due diligence, you’ll usually want to prepare a contract pack covering:

• Customer agreements: What are the service terms, pricing, renewal provisions, termination rights, and liability caps?
• Supplier agreements: Are there minimum purchase obligations, exclusivity, or price change rights?
• Commercial lease documents: rent, options, assignment clauses, landlord consent requirements, make-good obligations.
• Any distribution, referral, affiliate, or agency arrangements that affect sales channels.

If you’re planning an asset sale, the buyer will also ask whether contracts can be assigned, or whether customers/suppliers can terminate on “change of control”. Getting ahead of this can protect your sale price.

It’s also worth checking whether you already have a fit-for-purpose Asset Sale Agreement strategy in mind (asset sale vs share sale affects what transfers automatically and what needs consent).

4. People: Employees, Contractors, And Workplace Risk

If you have staff (or even long-term contractors), buyers will want clarity on:

• who is employed by the business (and on what terms)
• whether wages, superannuation and entitlements have been paid correctly
• whether there are any ongoing disputes, warnings, or claims risk
• whether key people will stay after the transaction

Practical vendor due diligence steps here often include:

• Ensure you have signed contracts and clear role/compensation details for key staff (an Employment Contract is usually the starting point).
• Confirm who is an employee vs contractor (misclassification can be a major buyer concern).
• Document any commission schemes, bonuses, or incentive arrangements.
• Review confidentiality and IP clauses to make sure the business owns what it thinks it owns.

If you’re selling, merging, or entering a partnership, the “people piece” is often as important as the financials-because that’s where operational continuity lives.

5. Intellectual Property (Brand, Software, Content, Know-How)

Many small businesses underestimate how important IP is to a buyer. If your brand is valuable, or if your systems are the “secret sauce”, a buyer will want to confirm the business owns and can transfer that value.

Vendor due diligence may involve:

• Confirming who owns trade marks, domain names, and social media accounts.
• Checking software licensing (including third-party subscriptions and whether they can be transferred).
• Checking that contractors (designers, developers, marketers) have assigned IP to the business.
• Listing business processes and documenting what is confidential.

If you’re disclosing sensitive information to a prospective buyer (or potential merger partner), it’s common to use a Non-Disclosure Agreement before you share detailed materials.

6. Compliance, Licences, And Consumer Law Risk

Buyers are not just buying your revenue-they’re also inheriting your risk. That’s why compliance issues can reduce price, lead to holdbacks, or even kill a deal.

Depending on your industry, vendor due diligence may include:

• confirming required licences/permits are current and held by the correct entity
• reviewing marketing claims, refund practices, and warranty statements under the Australian Consumer Law
• checking privacy compliance if you collect customer data (especially online businesses)
• confirming you have appropriate policies and security measures where relevant

Even if you don’t consider yourself “tech-heavy”, if you collect personal information through a website, mailing list, or CRM, your buyer may ask for your Privacy Policy and data handling approach. If you need to formalise this, a Privacy Policy is often part of the baseline documentation.

How Vendor Due Diligence Protects Your Deal (Not Just The Buyer)

Vendor due diligence can feel like extra work, especially when you’re already busy running the business. But it’s often one of the most practical ways to protect your deal outcomes.

It Helps You Avoid Value Erosion During Negotiations

Many deals start with a headline price, then drift down after diligence uncovers issues like missing contracts, poor documentation, or unclear ownership.

When you do vendor due diligence first, you can either:

• fix problems before they’re discovered, or
• disclose and frame them properly (with context), rather than letting the buyer “assume the worst”.

It Can Shorten The Transaction Timeline

Deals often stall because sellers have to hunt for documents, recreate records, or chase third parties for consents.

If you’ve already prepared a clean data room (even a simple folder structure with labelled documents), the buyer can move faster-and that can matter if you’re trying to complete before a lease option date, seasonal peak, or a funding deadline.

It Reduces The Risk Of Warranty And Indemnity Disputes Later

In most sale agreements, you will be asked to give warranties (promises) about the business: that information is accurate, obligations have been met, contracts are valid, there are no hidden disputes, and so on.

Vendor due diligence helps you understand what you can safely warrant, and what needs to be qualified or disclosed.

That matters because disputes after completion can be expensive and distracting-even if you “win”.

Common Vendor Due Diligence Issues That Delay Or Derail Deals

In our experience, a lot of transaction stress comes from issues that were always there-but weren’t identified and managed early.

Here are some common issues that come up during vendor due diligence (and buyer diligence) for Australian small businesses.

Missing Or Inconsistent Contracts

• Key customers operating on informal email arrangements
• Old template terms that don’t match the current business model
• Supplier contracts in the founder’s personal name (not the business)

These issues can create uncertainty around whether revenue will transfer cleanly after settlement.

Security Interests And PPSR Registrations

Buyers may ask whether any third party has security over business assets (for example, equipment, inventory, receivables), and whether there are registrations on the Personal Property Securities Register (PPSR).

If you’re unsure, it’s worth understanding the PPSR landscape early-especially if you’ve taken finance, signed equipment leases, or entered supplier arrangements. A practical starting point is understanding PPSR basics and identifying whether any registrations need to be discharged before completion.

Employee Entitlements And Underpayments

Even unintentional payroll errors can spook buyers. If your business has grown quickly, or awards/classifications have changed, buyers may ask for comfort that entitlements are being handled correctly.

This is where clean records and good contracts matter (and where you may want to rectify any issues before you go to market, with advice from your accountant/payroll provider as appropriate).

IP That Isn’t Actually Owned By The Business

This is a big one for online businesses: your website, branding, code, or content may have been created by contractors, agencies, or a former co-founder.

If there’s no clear IP assignment, the buyer may worry they aren’t actually buying what they think they’re buying.

“One Business” That’s Actually Multiple Business Lines

It’s common for small businesses to evolve in a way that creates mixed revenue streams (for example, wholesale plus retail, services plus product sales, multiple brands under one entity).

That’s not necessarily a problem, but buyers will want clarity on:

• what’s included in the transaction
• which assets belong to which brand/business line
• how shared costs are allocated

Vendor due diligence helps you package this information clearly so it doesn’t become a point of confusion later.

How To Run Vendor Due Diligence Step By Step (Without Overcomplicating It)

You don’t need to turn vendor due diligence into a months-long legal project. The goal is to be prepared, not paralysed.

Here’s a practical way to approach it.

Step 1: Clarify The Deal You’re Actually Doing

Start with the basics:

• Are you selling shares or assets?
• Is this a full exit or partial exit?
• Is the buyer keeping you on for a handover period?
• Are you merging (and if so, who controls the merged entity)?
• Are you entering a partnership or joint venture instead of selling?

The structure affects what information matters most, and what documentation you’ll need.

Step 2: Build A “Data Room” With A Simple Folder Structure

A data room can be as simple as a secure cloud folder with clear naming conventions. You want it to be easy for someone outside your business to follow.

Common folders include:

• Corporate and Ownership
• Financials and Tax
• Key Contracts
• Employees and Contractors
• Intellectual Property
• Compliance and Licences
• Insurance
• Assets and Equipment

This preparation makes you look organised and credible, which can support valuation and buyer confidence.

Step 3: Identify Red Flags Early And Decide What To Do About Them

Not every issue needs to be “fixed” before a sale. Sometimes the right approach is to:

• fix the issue (for example, update outdated terms or correct ownership records)
• disclose it and price it in
• offer a specific contractual protection (like a capped indemnity, a holdback, or a warranty qualification)

The key is to decide on your approach early, so it doesn’t become a reactive scramble during negotiations.

Step 4: Get Your Transaction Documents Aligned With Your Due Diligence Position

Once you understand your risks and strengths, your contract should reflect that reality.

For example, if you identify a potential secured finance issue, you may need to address discharge steps before completion.

Similarly, if you’re doing an asset sale, you’ll want the agreement to clearly list what is included and excluded, and deal with assignment of contracts, IP, and handover arrangements.

Step 5: Plan Communications (So You Don’t Spook Staff Or Customers)

During vendor due diligence and buyer diligence, you may need to involve:

• key employees
• major customers or suppliers (for consents)
• your landlord (for lease assignment)
• software vendors (for subscription transfers)

It’s worth mapping out when and how these conversations happen, and who owns them. This helps protect confidentiality and business continuity while negotiations are still in progress.

Key Takeaways

• Vendor due diligence is where you prepare your business for a sale, merger, or partnership by reviewing and organising key legal, financial, and operational information before the other side investigates.
• It can protect your deal by reducing surprises, speeding up negotiations, and helping you hold your valuation position.
• Strong documentation matters: ownership records, key customer/supplier contracts, employment arrangements, IP ownership, and compliance materials are common buyer focus areas.
• Common deal-stoppers include missing contracts, unclear IP ownership, employee entitlement risks, and security interests (including PPSR-related issues).
• A simple, well-organised data room and an early plan for “red flags” can make the entire transaction more predictable and less stressful.

If you’d like help with the legal side of preparing for due diligence before you sell, merge or bring on a partner, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.