Ratchet Defined: What Do Ratchet Clauses Mean For Your Business Agreements?

When you’re raising capital or bringing on investors in Australia, you’ll often see terms designed to balance risk between founders and investors. One of the most talked-about is the “ratchet clause.”

Despite the mechanical name, a ratchet is a legal mechanism that can impact how ownership shifts if your company later issues shares at a lower price. Get it right, and it can help secure investment. Get it wrong, and it can unexpectedly dilute founders, complicate future raises, and cause friction in your cap table.

In this guide, we explain “ratchet defined” in plain English, where these clauses appear, how they work, the main types, and what to negotiate. We’ll also cover the core documents you’ll want in place when you’re doing a deal so you can move forward with confidence.

What Is A Ratchet Clause?

A ratchet clause (often called anti-dilution protection) adjusts an investor’s economics if your company later issues shares at a lower price than they originally paid. In simple terms, it’s a promise that if a future round values the company lower (a “down round”), the investor’s effective price is adjusted so they don’t wear the full downside.

This usually happens by changing a conversion price (for preference shares, convertible notes or SAFEs) or by issuing additional shares to the protected investor so their original investment buys more equity than it otherwise would. The mechanics depend on the exact wording in your documents.

Why it matters: ratchets can make your offer more attractive to investors (especially in uncertain markets), but they can also shift dilution to founders and unprotected shareholders if the company doesn’t hit its growth targets. The details of the clause-and how it interacts with your broader cap table-really matter.

Where Do Ratchet Clauses Appear In Australian Agreements?

You’ll most commonly see ratchet mechanisms in early-stage and growth-stage deals, including:

• Shareholders Agreements and subscription documents when issuing preference shares or new ordinary shares to investors.
• Investment term sheets that set out headline protections such as anti-dilution before the definitive contracts are drafted; capturing the assumptions in a clear Term Sheet upfront helps everyone align early.
• Convertible notes and similar instruments where a loan converts into equity later; if you’re exploring this structure, a purpose-built Convertible Note can clarify conversion price and anti-dilution settings.
• SAFE-style agreements and bespoke investment deeds (especially in seed and pre-seed rounds).

Whether the protection sits in a Shareholders Agreement, a note, or a side letter, the practical effect is the same: it can reallocate dilution if a subsequent round prices lower than the investor’s initial entry price.

Types Of Ratchet Protection (And What To Watch)

Not all ratchets are equal. The type, triggers and exceptions will shape the impact on founders, employees and other shareholders.

Full Ratchet

Under a full ratchet, if any later shares are issued below the investor’s original price, the protected investor is treated as if they had invested at the new, lower price. In practice, this can mean issuing them additional shares or adjusting a conversion price without reference to the number of new shares issued.

Impact: powerful downside protection for investors, but potentially heavy dilution for founders and unprotected holders in a down round.

Weighted Average Ratchet

A weighted average ratchet softens the adjustment by taking into account both the lower price and how many shares are issued at that price. There are two common flavours:

• Broad-based weighted average: factors in a broader base of shares when calculating the new effective price, often including fully diluted capital (more founder-friendly).
• Narrow-based weighted average: uses a narrower base (more investor-friendly than broad-based, but still gentler than full ratchet).

Impact: the adjustment moves the investor’s effective price down proportionally, reducing founder dilution compared to a full ratchet.

Price-Based Vs Share-Based Adjustments

Ratchets usually work by changing the conversion price for preference shares or notes (price-based), which then increases the number of shares an investor receives on conversion. Less commonly, documents might call for issuing additional “make-up” shares directly (share-based). Either way, the economics aim to protect the investor in a lower-priced round.

Triggers, Carveouts And Expiry

Well-drafted ratchets define exactly what events trigger the protection. You’ll often see carveouts so the ratchet doesn’t apply to things like:

• Employee equity (ESOP/ESS) or director incentive issues.
• Small strategic issuances or pro rata top-ups with board approval.
• Conversions already priced by the terms of a note or option.

It’s also common to negotiate whether the ratchet expires after a period (for example, after the next priced round or following a time-based sunset) or is subject to a cap on the maximum adjustment.

How Do Ratchet Clauses Work In Practice?

Let’s imagine your company raised $1 million for 20% at a $5 million pre-money valuation. Those investors negotiated a weighted average ratchet.

A year later, the market shifts and you raise again at a lower price-say, a $3 million pre-money valuation. The weighted average formula is applied using the lower price and the number of new shares issued in that down round. The result is a revised (lower) effective price for the protected investors, which increases the number of shares they’re entitled to (or reduces their conversion price).

If the clause had been a full ratchet, the adjustment would ignore the number of new shares and instead reprice the prior investment entirely to the new, lower price-typically a much bigger dilution for founders and any unprotected holders.

The takeaway: two deals can look identical at headline valuation, but their ratchet settings can produce very different outcomes for ownership if a down round happens.

Risks, Benefits And Negotiation Tips

Ratchets can help you close funding in tough markets, but they also reshape incentives and can have flow-on effects. Here’s a balanced view to help you negotiate confidently.

Potential Benefits

• Investor comfort in volatile markets: offering thoughtful downside protection can unlock capital that might otherwise sit on the sidelines.
• Faster deal-making: clear anti-dilution settings can reduce back-and-forth on pricing risk.
• Bridge to milestones: if protection helps you secure runway to hit value-driving targets, it can be worth the trade-off.

Potential Risks

• Founder dilution: in a down round, dilution can concentrate on founders and unprotected holders, especially under a full ratchet.
• Future raise complexity: some later investors may hesitate if earlier instruments carry aggressive anti-dilution rights.
• Cap table friction: unclear drafting can trigger disputes about what counts as a “down round” or which issuances are carved out.

Negotiation Tips For Australian Founders

• Define the mechanism precisely: spell out whether it’s full or weighted average, the exact formula, the share base used, and how rounding is handled.
• Set sensible carveouts: exclude employee equity plans and small strategic issuances so you can keep growing your team and partnerships without constantly triggering the ratchet. If you’re rolling out staff equity, align the clause with your Employee Share Option Plan.
• Consider sunsets and caps: negotiate a time-based expiry (for example, after the next priced round) or a cap on the maximum adjustment.
• Use pay-to-play: some deals require investors to join pro rata in future rounds to access ratchet benefits, encouraging continued support.
• Keep the “story” investable: ensure the clause won’t scare off future investors-your next round lead will revisit these protections in diligence.
• Document at term sheet stage: align expectations early in a clear Term Sheet, then mirror the language in your definitive documents.

It’s also wise to sense-check ratchet settings against your business plan. A clause that looks harmless on day one can have outsized effects if the market turns or milestones take longer than expected.

Legal And Document Checklist For Capital Raising

Ratchets don’t operate in isolation. They sit within a broader legal framework that includes your company rules, investor rights and offer terms. To set yourself up for smooth negotiations (and fewer surprises), make sure your core documents are in order.

1) Company Rules And Governance

• Company Constitution: this sets out decision-making and share issue processes for your company. If you’re planning multiple rounds, a modern Company Constitution can help align governance with investor expectations.
• Board and shareholder approvals: check what approvals are required to issue new shares, create new classes, or vary class rights. Align this with your anticipated funding path.

2) Investment Documents

• Share Subscription Agreement: documents the price, number of shares and key terms for the issue; ratchet provisions should be consistent with the subscription terms. If you’re using a separate subscription, ensure it aligns with your Share Subscription Agreement drafting.
• Shareholders Agreement: governs rights between shareholders (including anti-dilution, pre-emptive rights, information rights and dispute resolution). If you’re introducing ratchet protection, it typically lives here or in the share terms; your Shareholders Agreement should integrate cleanly with any class terms.
• Convertible Note: if you’re raising via debt that converts to equity, ensure the conversion mechanics and anti-dilution provisions are crystal clear in the Convertible Note itself.
• Term Sheet: capture the commercial intent in plain English and keep it consistent with the final documents; a well-structured Term Sheet saves time (and cost) later.

3) Cap Table And Employee Equity

• Employee equity plan: plan your ESOP/ESS pool early and make sure ratchet carveouts won’t undermine your ability to hire. If you need help setting the rules and grants, consider a tailored Employee Share Option Plan.
• Founder vesting and leaver mechanics: if founders have vesting or buy-back terms, confirm how a down round and ratchet might interact with those settings.

4) Deal Hygiene And Confidentiality

• NDA/Confidentiality: before sharing sensitive financials and product details with potential investors or partners, use a practical Non-Disclosure Agreement to protect your information.
• Privacy: if you’re sharing data rooms or collecting any personal information from potential investors through your website, publish a compliant Privacy Policy and follow good data-handling practices.

Every deal is different. If you’re weighing alternatives-or want a second set of eyes on your settings-a short strategy chat via a capital raising consult can help you choose the right structure before you commit.

Are Ratchet Clauses Enforceable In Australia?

As a general rule, if a ratchet clause is clearly drafted and agreed by the parties in the relevant contract (and consistent with company law and your share class rights), Australian courts will treat it as enforceable. Disputes usually arise from ambiguity-unclear triggers, inconsistent definitions across documents, or gaps between the term sheet and the final drafting.

Key compliance points include ensuring the company has authority to issue the relevant shares or adjust conversion terms, that necessary approvals are obtained, and that existing class rights are respected or properly varied in line with the Corporations Act and your constitution. If you’re unsure, get the drafting and the process steps checked before you sign.

Alternatives To Ratchet Protection

If a ratchet feels too heavy for your situation, there are other tools that can help balance risk:

• Milestone-based pricing: tranche the investment with pricing linked to agreed milestones (for example, revenue targets or product releases).
• Pay-to-play provisions: investors maintain certain rights only if they participate in future rounds, encouraging ongoing support.
• Smaller ESOP refreshes or strategic allotments: these can offer flexibility without permanently resetting price protection.
• No anti-dilution: later-stage or less risky investments sometimes proceed without any ratchet, especially where the valuation already factors in risk.

The right approach depends on stage, market conditions and bargaining power. The important thing is to document whichever path you take in a way that’s consistent, clear and investable.

Key Takeaways

• A ratchet clause is an anti-dilution mechanism that adjusts an investor’s economics if a later round is priced lower, usually by changing conversion price or issuing extra shares.
• Full ratchet protection is the most aggressive; weighted average ratchets are more common and generally more balanced for founders and employees.
• Clarity is everything: define triggers, carveouts (especially for employee equity), any caps, and any sunset period directly in your investment documents.
• Integrate the ratchet with your overall legal stack-your Company Constitution, Shareholders Agreement, Share Subscription Agreement and any Convertible Note should say the same thing in plain English.
• Think ahead to future rounds; an aggressive ratchet can make later fundraising harder if a new lead investor doesn’t accept those protections.
• Get the commercial intent onto paper early with a clear Term Sheet, and consider a short capital raising consult to stress-test your approach before you sign.

If you’d like a consultation about negotiating or understanding ratchet clauses for your business agreements, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.