How to Write a Professional Contract

Contract Directory
Blog
September 23, 2025

Estimated reading time: 6 minutes

A well-crafted professional contract clearly defines expectations and safeguards the interests of all parties, whether for services, goods, or partnerships. Consequently, it acts as both a roadmap for collaboration and a tool to prevent disputes.

You can create a contract by:

Drafting it yourself to suit your specific needs.
Hiring a legal expert to produce a tailored document.
Using an industry-specific template from trade associations or provided by the other party.

Choose Clear and Simple Language

Complex legal terms often lead to confusion. Therefore, use plain, straightforward language that everyone can understand to minimize disputes.

For example, if a lawyer drafts the contract, request simple wording and ask for explanations of any unclear sections. Additionally, while templates often use generic terms like “party A,” replacing these with actual names personalizes the agreement and enhances clarity.

Simplify for Smaller Agreements

For less complex deals, a concise contract is often sufficient. Thus, focus on covering the essentials without overwhelming detail.

A simple contract should include:

The work, deliverables, or goods involved.
Payment details, including amounts and methods.
Criteria for completion or acceptance.
A process to resolve disagreements.

Provide Complete Party Details

Accurate details about all parties ensure enforceability and transparency. For instance, this information is vital for legal proceedings or assessing risks before signing.

Include:

Full legal names and addresses of individuals or businesses.
Australian Business Number (ABN), if applicable.
Australian Company Number (ACN), if different from the ABN’s last nine digits.
A statement clarifying the relationship (e.g., contractor, not employee) to avoid issues like sham contracting.
Signatures of all parties, plus witnesses if required, to validate the contract.

Outline the Scope and Timeline

Clearly specify the work, services, or goods involved, along with start and end dates and the location of performance (e.g., client’s site or remotely). This clarity prevents misunderstandings.

However, avoid dictating how tasks are performed unless essential, as this could suggest an employment relationship rather than a contractual one. For example, construction contracts may include specific plans provided by the client.

Clarify Payment Structures

Payments can be structured as fixed fees, hourly/daily rates, or milestone-based. Therefore, clearly outline:

The fee calculation method.
Whether Goods and Services Tax (GST) applies or refer to tax guidelines for clarity.
Payment schedules and triggers.

Hourly or Daily Rates

For time-based payments, define:

Standard working hours or days.
The rate per unit of time.

Fixed Fees

For fixed fees, include a review clause for long-term contracts to address rising costs. This ensures fairness over time.

Payment Timing Options

Payment schedules depend on the contract type. For instance:

Full payment on completion suits short projects but may strain cash flow for longer ones.
Partial upfront payment with balance at completion covers initial costs like materials.
Progress payments, tied to milestones or dates, provide flexibility.

For milestone payments, specify:

Due dates or triggers (e.g., completing a phase).
Expected deliverables (e.g., a finalized report).
Acceptance criteria (e.g., no defects).

In industries like construction, stage payments are common, such as after completing framing. Consequently, check local regulations for compliance.

Invoicing and Payment Instructions

To ensure smooth transactions, include:

Whether invoices are required.
Payment deadlines (e.g., within 15 days).
Preferred payment methods (e.g., bank transfer).

Invoices should list:

Issue date.
Provider’s name, ABN, and contact details.
Recipient’s name.
Invoice number.
Description of services or goods.
Itemized costs and total.
Payment terms.

Handling Reimbursable Expenses

Additionally, clarify whether the contract covers costs like travel or materials and whether resources are provided directly by the other party.

Establish Intellectual Property (IP) Ownership

IP clauses determine ownership of creations like designs or software. By default, the creator retains IP unless otherwise stated. Therefore, if ownership transfers, this must be explicit, and creators should seek legal advice.

Common arrangements include:

Each party keeps the rights to their own contributions.
One party gains full rights, possibly granting the creator limited, revocable usage.

Safeguard Confidential Information

Confidentiality provisions protect sensitive data, such as client lists or trade secrets. For example, clearly define what qualifies as confidential to ensure both parties understand their obligations.

Allocate Liability for Risks

Indemnity clauses assign responsibility for losses, such as damages caused by one party’s actions. However, parties should assess whether they can control the risks, especially with subcontractors involved. These clauses are common in fields like consulting or engineering.

Consequently, seek legal advice and consider professional indemnity insurance when agreeing to indemnities.

Specify Insurance Obligations

Each party’s insurance responsibilities should be clear to address contract-related liabilities. Common policies include:

Professional indemnity for errors in services.
Public liability for third-party damages.
Income protection or workers’ compensation, if applicable.

Ensure coverage aligns with the contract’s scope.

Address Subcontracting Arrangements

If subcontracting is planned, disclose and agree on it upfront. The hiring party may limit what can be delegated, but the primary contractor remains accountable for subcontractor work and manages separate agreements with them.

Review Exclusivity Clauses

Exclusivity clauses restrict one party from working with others. Therefore, negotiate compensation for lost opportunities, as courts may not enforce overly restrictive clauses, considering duration, geography, and business interests.

Termination Compensation

Include terms for early cancellation, such as:

Reimbursement for incurred costs.
A fixed lump-sum payment.

Evidence of costs may be required.

Include Non-Compete Provisions

Non-compete clauses limit competitive activities during or after the contract. Like exclusivity clauses, they must be reasonable to be enforceable.

Handle Defects and Corrections

For faulty or incomplete work, specify:

Responsibilities for fixes.
The defect liability period.
Notification procedures.

The hiring party should issue a remedy notice, detailing the issue, deadline, and consequences of non-compliance.

Plan for Dispute Resolution

To manage disputes over payments or performance, include steps like:

Written notice of the issue.
A meeting within 7 days to discuss.
Referral to mediation or arbitration.
A process for selecting an ADR professional.
Cost-sharing and time limits.

For technical disputes, consider an expert determination clause.

Document Contract Amendments

Contract changes, like scope or price adjustments, should be recorded. While verbal agreements may be valid, written and signed amendments are clearer. In regulated sectors, follow specific rules.