Independent Contractor Agreement for Tradies: What Must Be Included

If you’re a tradie working as an independent contractor — or hiring one — a written agreement is not optional. It defines who does what, how much gets paid, and what happens when things go wrong.

Without one, you’re exposed to payment disputes, scope creep, liability claims, and confusion over whether the relationship is employment or contracting.

Why tradies need a written independent contractor agreement

Verbal agreements are legally binding in Australia, but they’re impossible to prove. A written independent contractor agreement:

• Clarifies the relationship — confirms the tradie is not an employee, which affects superannuation, workers’ compensation, and tax obligations
• Defines the scope of work — prevents the client adding extra tasks without renegotiating payment
• Sets payment terms — specifies rates, invoicing, and when payment is due
• Allocates liability — determines who is responsible if something goes wrong on site
• Provides a dispute resolution process — avoids costly tribunal proceedings

The ATO applies strict tests to determine whether someone is an employee or contractor. Getting this wrong can result in back-payment of superannuation, PAYG withholding, and penalties. A properly drafted agreement helps demonstrate genuine independent contractor status.

Parties and ABN details

The agreement must clearly identify:

• The contractor’s full legal name and ABN
• The client’s full legal name (individual or company) and ABN if applicable
• Trading names if different from legal names

An ABN is required for genuine independent contractor relationships. If the tradie does not have an ABN, the client must withhold 47% tax from payments under PAYG rules.

Scope of work

This is the most important clause. It must specify:

• What work will be done — detailed description of the job, not just “plumbing services”
• Where the work will be performed — street address or site location
• Timeline or milestones — start date, completion date, or staged delivery
• Materials and equipment — who supplies what, and who pays for materials
• Standards and specifications — reference to Australian Standards, building codes, or client-provided plans

Be specific. “Install new kitchen” is too vague. “Supply and install Caesarstone benchtop, Blanco sink, Miele dishwasher as per attached plans, compliant with plumbing standards” is clear.

Payment terms

The agreement must state:

• Contract price — fixed price, hourly rate, or schedule of rates
• Payment structure — upfront deposit, progress payments, or payment on completion
• Invoicing process — how and when invoices are issued
• Payment due date — typically 7, 14, or 30 days from invoice date
• Late payment interest — optional but recommended, typically 10-15% per annum
• GST treatment — whether the price includes or excludes GST

For larger jobs, a deposit (typically 10-30%) and progress payments tied to milestones are standard. Never agree to “payment on completion” for a job longer than a few days — you need cash flow.

If the client is late paying, a properly drafted payment clause gives you the right to suspend work and charge interest.

Variations and additional work

Scope creep kills profitability. The agreement must include:

• Variation process — all changes must be requested in writing
• Pricing for variations — how additional work will be quoted and approved
• Timeline adjustments — variations may extend the completion date

A standard clause: “Any variation to the scope of work must be agreed in writing and may result in additional charges and extended timeframes. The contractor is not obliged to perform work outside the agreed scope.”

Independent contractor status

To satisfy the ATO and avoid being reclassified as an employee, the agreement should confirm:

• The contractor is running their own business and holds an ABN
• The contractor is responsible for their own tax, superannuation, and insurance
• The contractor has the right to delegate or subcontract the work
• The contractor provides their own tools and equipment
• The contractor is free to work for other clients

This clause protects both parties. If the ATO later determines the relationship was employment, the client may be liable for unpaid superannuation and PAYG withholding.

Insurance and liability

The agreement must specify:

• Public liability insurance — the contractor must hold minimum $10-20 million cover
• Professional indemnity insurance — if applicable (for design work)
• Workers’ compensation — if the contractor employs others
• Liability for defects — who is responsible if the work is faulty
• Indemnity clause — the contractor indemnifies the client for third-party claims arising from the contractor’s negligence

Clients should request a certificate of currency before work starts. Contractors should never agree to unlimited liability — cap it at the contract value or insured amount.

Warranties and defects liability

The agreement should include:

• Workmanship warranty — typically 12 months for defects in workmanship
• Defects rectification process — the contractor must be given reasonable opportunity to fix defects before the client engages someone else
• Exclusions — fair wear and tear, client misuse, or damage by third parties

Under Australian Consumer Law, statutory warranties apply regardless of what the contract says. Work must be done with due care and skill, fit for purpose, and completed in a reasonable time.

Termination rights

Both parties need an exit. The agreement should cover:

• Termination for breach — if one party fails to meet their obligations
• Termination for convenience — either party can end the agreement with notice (typically 7-14 days)
• Payment on termination — the contractor is entitled to payment for work completed to date
• Return of materials — what happens to unused materials and client property

A fair termination clause protects both sides. The client can exit if the work is substandard. The tradie can walk away if the client becomes impossible to work with.

Confidentiality and intellectual property

If the tradie is working on a client’s property or has access to sensitive information:

• Confidentiality clause — the contractor must not disclose client information
• IP ownership — clarifies who owns designs, plans, or custom fabrications

For most tradie work, IP is not a major issue. But if you’re designing custom joinery, metalwork, or landscape plans, specify whether the client owns the design or you retain the right to reuse it.

Dispute resolution

Include a process for resolving disputes without going to court:

• Negotiation first — parties must attempt to resolve disputes directly
• Mediation — if negotiation fails, engage a mediator
• Tribunal or court — only as a last resort

Most tradie disputes involve amounts under $25,000, which fall within the jurisdiction of the relevant state tribunal (VCAT, NCAT, QCAT). A good dispute resolution clause saves both parties thousands in legal fees.

What happens without a written agreement

You can still enforce a verbal contract in Australia, but you’ll struggle to prove what work was agreed, what the price was, when payment was due, who was responsible for materials, or whether variations were approved.

Tribunal members and magistrates prefer written evidence. If it’s your word against theirs, the outcome is unpredictable.

How ClaimDone helps tradies with independent contractor agreements

ClaimDone generates independent contractor agreements tailored to Australian tradies. You answer a short intake form about the job, upload any relevant documents (quotes, plans, scope), and the Proprietary AI Engine drafts a contract covering:

• Scope of work specific to your trade
• Payment terms and variation process
• Insurance and liability clauses
• Australian Consumer Law compliance
• Dispute resolution provisions

The agreement is prepared in plain language, ready for both parties to sign. Flat fee, no subscription, delivered in under 60 minutes.

If the job is complex, involves structural work, or the contract value exceeds $50,000, consider having a construction lawyer review the agreement.

Final checklist before you sign

Confirm the agreement covers:

• Full legal names and ABNs of both parties
• Detailed scope of work with specifications
• Fixed price or hourly rate, payment schedule, and due dates
• Variation process requiring written approval
• Confirmation of independent contractor status
• Insurance requirements and liability caps
• Workmanship warranty and defects process
• Termination rights for both parties
• Dispute resolution process

A proper independent contractor agreement is not about distrust — it’s about clarity.

Get your independent contractor agreement sorted

ClaimDone generates independent contractor agreements specific to Australian tradies, compliant with Australian Consumer Law and structured to protect both parties. Answer a few questions, upload your scope, and get a professionally drafted contract in under an hour. Generate your independent contractor agreement now.

Frequently Asked Questions

Do I need a written independent contractor agreement for every tradie job?

Yes, especially for jobs over $1,000 or lasting more than a day. A written agreement protects both parties by defining scope, payment terms, and responsibilities. Verbal agreements are hard to prove if a dispute arises.

What's the difference between an independent contractor and an employee?

An independent contractor runs their own business, holds an ABN, provides their own tools, and can work for multiple clients. An employee works under direction, has tax withheld, and receives superannuation. The ATO applies strict tests to determine the relationship.

Can I use the same independent contractor agreement template for all my tradie jobs?

You can use a base template, but the scope of work, payment terms, and timeline must be customised for each job. Generic agreements that don’t reflect the actual work are difficult to enforce if a dispute arises.

What happens if the client adds extra work not in the agreement?

You are not obliged to perform work outside the agreed scope. Any variation must be requested in writing, priced separately, and approved before you proceed. Without a variation clause, clients may expect free additional work.

Do I need public liability insurance if I have an independent contractor agreement?

Yes. An independent contractor agreement should require the tradie to hold public liability insurance (typically $10-20 million). The agreement does not replace insurance — it allocates responsibility and confirms insurance is in place.