Disclosure Letter: Practical Guide For Australian Startups And Small Businesses

If you’re selling your business, taking on investors, or doing any kind of deal where someone is relying on what you’ve told them, you’ll quickly hear about a “disclosure letter”. It can feel like another document in a long list of legal paperwork - but in many transactions, it’s one of the most practical tools you have to help manage risk and keep the deal moving.

A disclosure letter is basically where you put your cards on the table (in a structured way). Done properly, it can reduce misunderstandings, help both sides feel confident about what’s being bought or invested into, and (depending on the wording of the transaction documents) limit the scope for certain claims later.

In this guide, we’ll walk you through what a disclosure letter is, when you might need one, what it usually includes, and common mistakes we see startups and small businesses make.

This article provides general information only and does not constitute legal advice. Every transaction is different, and you should get advice on your specific circumstances.

What Is A Disclosure Letter (And Why Does It Matter)?

A disclosure letter is a document typically given by a seller (or founder) to a buyer or investor during a transaction. Its main job is to:

• Disclose exceptions to statements made elsewhere in the transaction documents (especially warranties); and
• Create a written record of what the other side has been told, so everyone is clear on the true position.

In practice, disclosure letters often come up in:

• business sales (asset sale or share sale)
• startup acquisitions
• fundraising and investment rounds (particularly where founders give warranties)
• major commercial deals where one side is giving extensive assurances

How A Disclosure Letter Connects To Warranties

Most transactions include warranties, which are promises about the business. For example, you might be warranting that:

• your financial statements are accurate
• you own the business assets you’re selling
• there are no undisclosed disputes or legal claims
• your key contracts are in place and valid
• your IP is owned by the business (and not a contractor or former co-founder)

The disclosure letter is where you say: “We agree to these warranties, except for the following disclosed matters.”

This is important because, if you disclose something properly and in the way required by the agreement, it may reduce (or sometimes eliminate) the risk that you’ll later be accused of breaching a warranty or misleading the other party.

Disclosure Isn’t Just Formality - It’s Risk Management

From a small business owner’s perspective, a disclosure letter is often about protecting yourself from “surprise” claims after the deal. Many disputes in sales or investments start with one side saying: “You never told us about this.”

A good disclosure letter helps you respond with: “We disclosed it on this date, in this document, with supporting details.”

When Do Australian Startups And Small Businesses Need A Disclosure Letter?

You don’t need a disclosure letter for every transaction. But if you’re involved in a deal where you’re making formal representations about your business, it’s worth taking seriously.

1. Selling Your Business (Asset Sale Or Share Sale)

In a business sale, a disclosure letter is commonly used alongside the main sale document, such as a Business Sale Agreement. It’s especially common where the buyer has negotiated detailed warranties.

Whether your deal is structured as an asset sale or a share sale, the “what are you promising?” question still comes up - and disclosure is often how you manage that.

2. Raising Capital (Investors Want Certainty)

Some early-stage fundraising rounds are relatively lightweight and don’t include extensive warranties. Others do - particularly later rounds, strategic investments, or where investors are buying a significant stake.

If you’re giving warranties to investors about the company’s status, finances, IP ownership, or liabilities, a disclosure letter can be the cleanest way to flag known issues without derailing the deal.

3. Merging With Another Business Or Doing A Major Restructure

If you’re combining operations, transferring assets, or doing a restructure that involves third-party reliance on your disclosures, you may see disclosure schedules or a formal disclosure letter used to document exceptions and risks.

4. Any Transaction With “Due Diligence” And Heavy Documentation

If the other side is conducting formal due diligence, that’s usually a sign they’ll want disclosures formalised. This is often handled as part of a broader Legal Due Diligence process, where the goal is to identify issues early and record them properly.

What Should A Disclosure Letter Include?

There’s no single “perfect” template, because disclosure letters are deal-specific. But there are common components we usually expect to see in an Australian transaction.

1. The Structure: General Disclosures Vs Specific Disclosures

Disclosure letters often split disclosures into two categories:

• General disclosures: information that is deemed disclosed because it’s available in certain sources (for example, documents in a data room, or information in ASIC registers). Buyers often resist overly broad general disclosures, so this needs careful drafting.
• Specific disclosures: detailed disclosures directly tied to particular warranties (for example, “Warranty 7.2 says there is no litigation, except for the customer dispute described below…”).

For small businesses, it’s usually the specific disclosures that matter most. And if there’s a later dispute, the contract wording and the quality of the disclosure (including how clearly it’s identified and cross-referenced) can be critical.

2. Enough Detail To Be “Fair” (Not Just Vague Warnings)

One of the biggest traps is thinking you can disclose something with a vague line like: “There may be employee disputes from time to time.”

That’s usually not good enough. Depending on the agreement, a buyer (or investor) typically needs enough information to understand:

• what the issue actually is
• how serious it is (money, timing, operational impact)
• what you’ve done about it (if anything)
• what supporting documents exist

Think of it as “fair disclosure”: you’re giving the other side a meaningful chance to assess the risk, not just a generic heads-up.

3. Clear Cross-References To The Warranties Or Deal Terms

A good disclosure letter makes it easy to match each disclosure to the warranty (or section) it qualifies.

This is more than neatness. If there’s a dispute later, a properly cross-referenced disclosure is generally much easier to point to and rely on (subject to the terms of the agreement).

4. Supporting Documents (But Not A Document Dump)

Disclosures often attach (or refer to) documents such as:

• copies of key customer or supplier contracts
• lease documents
• details of loans, security interests, or repayment arrangements
• employee claims, warnings, or Fair Work correspondence
• IP assignment deeds or contractor agreements
• settlement correspondence or demand letters

The goal is to be specific and organised. If you provide 500 files with no index and no explanation, you risk arguments later that the buyer couldn’t reasonably find or understand the issue.

5. The Right Legal Framing (Liability And Remedies)

Disclosure interacts closely with the liability and remedies clauses in your transaction documents. For example, your sale agreement may include caps, time limits, and exclusions that affect what claims can be brought and how damages are calculated.

This is why it’s common to align disclosure drafting with clauses dealing with risk allocation, including limitation of liability clauses.

How Do You Prepare A Disclosure Letter Without Overcomplicating It?

If you’re a founder or small business owner, the hardest part is usually knowing where to start. Here’s a practical way to approach it.

Step 1: Start With The Deal Documents (Not Your Memory)

Don’t try to brainstorm every possible issue from scratch. Instead, start with the warranties and key statements in your deal documents and work through them line by line.

If you’re selling the business, those promises will usually be contained in the sale agreement - whether that’s an Asset Sale Agreement structure or a share sale arrangement.

Step 2: Build A “Risk List” Across The Business

Most disclosures fall into a few common buckets. A quick internal checklist often includes:

• Financial: overdue debts, revenue concentration (one big client), unusual expenses, uncertain forecasts
• Customers and suppliers: disputes, key contract renewal risks, non-standard terms, service credits, claims
• People: contractor vs employee classification issues, claims, workplace investigations, underpayment risks
• IP and brand: incomplete IP assignments, open-source software risks, brand conflicts
• Operations: reliance on one platform or supplier, key systems outages, security incidents
• Regulatory: licences or permits, industry-specific compliance obligations

You’re not trying to make your business look perfect. You’re trying to document the reality so the deal can proceed on informed terms.

Step 3: Gather Evidence And Put It Into Plain English

A disclosure letter should be readable. If the buyer has to guess what you mean, you haven’t really disclosed it.

For each disclosure, it helps to include:

• what happened (dates, parties)
• current status (ongoing, resolved, uncertain)
• estimated financial exposure (if you can reasonably estimate it)
• documents that support it (attached or referenced)

Step 4: Avoid Accidental New Promises

It’s surprisingly easy to create new promises while trying to disclose something. For example, writing “This matter is resolved and no further action will be taken” could become a statement the buyer later relies on.

As you draft, keep checking whether each line is:

• a disclosure (telling the truth about a known issue), or
• a representation (a fresh promise that may create risk)

This is also where it helps to understand what makes a contract legally binding, because your disclosure letter is not just “informal notes” - it can have real legal consequences.

Step 5: Make Sure The Disclosure Letter Is Correctly Delivered

Even a great disclosure letter can cause problems if it’s delivered incorrectly. Common points to confirm include:

• the disclosure letter is addressed to the correct party (and any relevant related entities)
• it’s delivered in the way required by the agreement (email, portal, signed hard copy)
• it’s delivered by the deadline (often before signing, sometimes at signing)
• it’s signed by the correct people (for example, all sellers)

In other words, treat the disclosure process like a formal step in the transaction, not an afterthought.

Common Mistakes We See With Disclosure Letters (And How To Avoid Them)

Disclosure letters often go wrong in predictable ways - especially when you’re busy trying to run your business while negotiating a transaction.

1. Disclosing Too Little (And Hoping It Won’t Matter)

It’s natural to worry that disclosure will “spook” a buyer or investor. But non-disclosure usually creates a bigger problem later - when it becomes a trust issue or a legal claim.

In Australia, failing to disclose important information can also overlap with allegations of misleading or deceptive conduct. Even outside consumer transactions, misrepresentation risks can become a major issue in business deals, so it’s worth having a clear handle on misrepresentation and how disputes tend to arise.

2. Disclosing Too Much, In The Wrong Way

On the flip side, some sellers dump everything into a folder and assume that’s “disclosure”. That can backfire if the key issue isn’t clearly identified, or if the disclosure isn’t linked to the relevant warranty.

Good disclosure is not about volume - it’s about clarity.

3. Using A Disclosure Letter To Renegotiate The Deal Without Updating The Main Contract

Sometimes, a disclosure reveals something that really should change the deal terms (for example, a price adjustment, a retention amount, or a special indemnity).

If that happens, the right approach is usually to update the transaction documents so the commercial position matches the reality. That might involve a formal amendment process, such as a Deed of Variation, rather than hoping the disclosure letter “fixes” it on its own.

4. Forgetting That Internal Issues Can Be “Deal Issues”

Founders sometimes assume that issues like contractor arrangements, informal side letters with customers, or undocumented IP contributions are “internal” and not relevant to the buyer.

But buyers and investors care about anything that affects ownership, revenue, or liability - even if it feels like business-as-usual to you.

5. Misunderstanding The Difference Between A Share Sale And An Asset Sale

The disclosure focus can change depending on deal structure.

• In an asset sale, the buyer is often cherry-picking assets and may try to leave liabilities behind.
• In a share sale, the buyer steps into the company as it exists, which usually means liabilities stay with the company (and therefore matter a lot).

If you’re selling company shares, your key documents may include a Share Sale Agreement with warranties that go deep into the company’s history and operations.

That usually means the disclosure letter needs to be detailed and carefully structured.

Key Takeaways

• A disclosure letter is a practical tool in many Australian business transactions to record exceptions to warranties and document what you’ve told the other side.
• It commonly appears in business sales, acquisitions, and some investment rounds - especially where the seller or founders are giving warranties.
• Effective disclosure is specific, cross-referenced to the relevant warranties, and supported by documents (without becoming a confusing “document dump”).
• Common pitfalls include vague disclosures, over-disclosure without clarity, and using the disclosure letter to patch problems that should be fixed in the main agreement.
• Getting the structure and wording right matters, because a disclosure letter can significantly affect liability and post-deal claims (depending on the contract terms and the disclosure standard required).

If you’d like a consultation on preparing or reviewing a disclosure letter for your startup or small business transaction, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.