Bilateral Agreements: What They Are and How They Work

Whether you’re locking in a new supplier, engaging a contractor or partnering with a reseller, you’ll almost always be dealing with a bilateral agreement.

Get this document right, and you set clear expectations, reduce risk and build stronger commercial relationships. Get it wrong, and you can face disputes, cash flow issues and reputational damage.

In this guide, we’ll explain what a bilateral agreement is in Australian business law, when to use one, the key clauses to include, and how to make sure it’s enforceable and practical for your everyday operations.

What Is A Bilateral Agreement?

A bilateral agreement is a contract where both parties promise to do something for each other. Put simply: you do X, and they do Y.

Most day‑to‑day business contracts are bilateral. For example, you provide services and your client pays your fees; or a supplier provides goods and you pay the purchase price.

Legally, a bilateral agreement needs the core ingredients of a contract under Australian law: an offer, acceptance, consideration (value exchanged), an intention to create legal relations and certainty of terms. If you’re refreshing the basics, it can help to revisit how offer and acceptance operate in practice.

You might also hear people talk about “unilateral agreements” (where only one party’s promise is conditional on an act of the other, like a reward offer). For most small business deals, bilateral agreements are the norm because each side is exchanging obligations.

Sometimes, businesses start with a short, non‑binding summary of the deal (such as a heads of agreement or an MOU) before moving to a full contract. If you’re weighing up that approach, it’s worth understanding the difference between an MOU and a contract in Australia: see MOU vs Contract to avoid accidentally creating binding obligations too early.

When Would A Small Business Use One?

Almost anytime you trade with another business, you’ll use (or should use) a bilateral agreement. Common scenarios include:

• Supplying goods to a retailer or wholesaler.
• Providing services to clients (consulting, creative, trades, IT, marketing, etc.).
• Buying stock, equipment or software from a vendor.
• Partnering with an affiliate, referrer, distributor or reseller.
• Collaborations and joint projects (where each party contributes and benefits).

Let’s say you’re appointing a distributor. You’ll want a two‑way contract that sets out price, territory, service levels and brand protection. If you’re granting any market protection, consider whether an exclusivity arrangement is appropriate and document the boundaries clearly. For deeper context, have a look at exclusivity agreements and how they can affect your distribution strategy.

Or, if you’re onboarding a new supplier, a bilateral supply agreement clarifies delivery timeframes, quality standards, risk of loss, payments and what happens if goods are late or defective. In short: you rely on bilateral agreements to align expectations and allocate risk up front.

What Should Your Bilateral Agreement Include?

No two deals are identical, but most robust bilateral agreements cover the following areas. Think of this as your practical checklist.

Scope Of Work Or Goods

Define exactly what’s being supplied. For services, include a clear description, deliverables, milestones and any assumptions. For goods, specify product details, quantities and quality standards.

Price, Invoices And Payment Terms

State the price, when and how invoices are issued, payment due dates, late fees and any deposits or staged payments. Align this with your cash flow so there are no surprises.

Delivery, Performance And Acceptance

Set deadlines, lead times, shipping terms (including risk and title transfer), installation/implementation responsibilities and acceptance testing if relevant.

Liability, Indemnities And Risk Allocation

Explain who is responsible if things go wrong. Many businesses limit their exposure using caps on damages and specific carve‑outs. If you’re designing your liability settings, see how limitation of liability clauses work and whether they fit your risk profile.

It’s also common to exclude certain types of losses to keep risk predictable. To understand where courts draw the line, read about consequential loss and how it’s treated in Australian contracts.

Set-Off, Credits And Adjustments

If you want the ability to credit or deduct amounts (for example, to net off refunds or short deliveries), you’ll need an explicit clause. Here’s a practical primer on set‑off clauses and when they’re appropriate.

Intellectual Property

Clarify ownership of any IP used or created under the contract. If you’re licensing software, content or designs, spell out the scope, duration and limits of the licence.

Confidentiality And Privacy

Include confidentiality obligations and consider privacy compliance if personal information is shared. This is especially important if you’re handling customer or employee data.

Warranties And Service Levels

State what you guarantee (and what you don’t), plus any service level commitments. Be careful your marketing statements don’t contradict your contractual warranties.

Term, Renewal And Termination

Set the contract length, renewal options and termination rights (for convenience and for cause). Include a clear process for winding down and paying outstanding amounts.

Dispute Resolution

Outline a simple escalation process (e.g. notice, good‑faith discussions, mediation) before court action. This helps preserve relationships and control costs.

Governing Law, GST And Inconsistencies

Choose governing law (e.g. NSW, VIC, QLD) and include tax provisions, including GST handling. Add an order of precedence if your agreement has multiple documents (main terms, SOWs, schedules).

Practical Schedules

Use schedules for pricing tables, product specs or a statement of work. It keeps the main terms concise while letting you update operational details as the relationship evolves.

Formation And Signing: Making It Enforceable

From a legal standpoint, your goal is a contract that is both enforceable and workable for day‑to‑day operations. Here are the key steps and decision points.

Offer, Acceptance And Consideration

Make sure there’s a clear offer, unequivocal acceptance and an exchange of value on both sides. If negotiations are happening by email, take care not to accidentally accept terms you didn’t intend. The fundamentals of offer and acceptance apply regardless of whether the agreement is a five‑page contract or a longer master services agreement.

Who Signs For Each Party?

If you’re contracting with a company, ensure the person signing has authority. Execution under section 127 of the Corporations Act is a reliable method for companies (e.g. two directors or a sole director and sole company secretary), so consider incorporating section 127 signing into your process where appropriate.

Electronic Signatures, Counterparts And Evidence

Electronic signatures are generally valid in Australia for most commercial contracts. If parties will sign in different copies, include a counterparts clause to avoid doubt. The goal is to ensure you can prove a clean trail of consent and agreement terms if there’s ever a dispute.

Practical Tip: Keep It Simple To Operate

Choose processes that your team will actually follow (e.g. a standard SOW template and a clear PO‑to‑invoice workflow). An elegant, plain‑English agreement that fits your operations will always work better than a dense contract no one reads.

Changing Or Ending A Bilateral Agreement

Relationships evolve, so your contract should anticipate change. Here’s how to handle common scenarios.

Amendments And Variations

Build in a simple variation mechanism (for example, changes must be in writing and signed by both parties via an agreed change order process). For a deeper dive on what’s legally required, see a practical guide to legally varying a contract.

Extensions And Renewals

Use clear renewal windows and notice periods. Auto‑renewals can be helpful, but only if your team tracks renewal dates so you don’t roll into a new term unintentionally.

Assignment And Novation

If you might transfer the contract (for example, after a restructure or business sale), include assignment/novation provisions. Assignment transfers rights; novation replaces a party entirely with the other parties’ consent. Where a clean party swap is required, a Deed of Novation is the usual tool.

Termination And Exit

Set out when a party can end the agreement (for convenience and for breach), cure periods, and what happens to fees, IP, confidential information and transition assistance. This makes exits predictable and fair.

Disputes And Remedies

Include realistic dispute steps and proportionate remedies. Consider what happens if milestones are missed, goods are defective or payments are late, and tie those outcomes back to your liability and set‑off positions.

Common Risks And How To Manage Them

Smart contracting is about reducing uncertainty and preventing headaches. These are the issues we see most often in bilateral agreements for small businesses, plus practical ways to stay ahead of them.

Ambiguous Scope Or Deliverables

Symptoms: misaligned expectations, scope creep and margin erosion.

Fix: write a precise scope and use schedules. If scope changes, raise a variation and adjust price/timeframes accordingly.

Loose Payment Terms

Symptoms: late payments and cash flow stress.

Fix: include firm payment milestones, late fees and suspension rights. Align your invoicing workflow with the contract so it’s easy to enforce.

One-Sided Risk Allocation

Symptoms: uninsured exposures or obligations you can’t meet.

Fix: calibrate indemnities, damage caps and exclusions with your risk appetite and insurance settings. Review your liability clauses carefully so they’re fair and enforceable.

No Mechanism For Change

Symptoms: informal changes by email that cause disputes later.

Fix: include a short, repeatable variation process and make sure your team uses it.

Unclear IP Ownership

Symptoms: IP disputes at delivery or exit.

Fix: spell out who owns pre‑existing IP and newly created IP, and whether licences are exclusive or non‑exclusive.

Missing Operational Clauses

Symptoms: confusion about acceptance testing, service levels or handover.

Fix: add practical, measurable standards and acceptance criteria; put the details in an SOW that your delivery team can follow.

Signing Authority Gaps

Symptoms: counterparty claims the agreement isn’t binding.

Fix: confirm the signatory’s authority and use recognised methods like section 127 execution for companies where possible.

Exclusivity Without Safeguards

Symptoms: being locked in with an underperforming partner.

Fix: if you grant exclusivity, limit it by territory or segment, add performance thresholds and include termination triggers linked to KPIs. The principles in exclusivity agreements are a helpful guide here.

Poorly Drafted Remedies

Symptoms: uncertainty about refunds, re‑performance or credits.

Fix: be specific about what happens if obligations aren’t met, and align those remedies with your set‑off and liability settings.

Key Takeaways

• A bilateral agreement is the backbone of most B2B deals in Australia: each party makes promises and exchanges value.
• Use a clear, plain‑English contract that fits your operations and covers scope, price, timelines, IP, confidentiality, liability, termination and dispute steps.
• Make it enforceable: lock in the contract basics (offer, acceptance, consideration), confirm signing authority and use recognised execution methods for companies.
• Plan for change: include practical variation, renewal, assignment/novation and exit mechanisms so the relationship can evolve without friction.
• Manage risk with calibrated liability caps, exclusions for consequential loss where appropriate, and workable payment and set‑off provisions.
• If you’re unsure how to tailor clauses to your business or industry norms, getting targeted advice early can save time, cost and stress later.

If you’d like a consultation on drafting or reviewing a bilateral agreement for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.