How to Manage Subcontractors in Your Trade Business: A Practical Guide

for Australian Tradies

and does not constitute financial, tax or legal advice. Always consult a

Using subcontractors is one of the most effective ways to grow a trade

business beyond what you can do yourself -- without the full cost and

obligation of employment. Done well, a strong subcontractor network lets

you take on more work, handle peaks in demand, and access specialist

skills you don't have yourself. Done poorly, it creates quality control

headaches, compliance risks, and unhappy clients.

This guide covers how to find, engage, manage and pay subcontractors in

your Australian trade business, and how to avoid the common traps.

Employee vs. Subcontractor: Getting the Classification Right

Before engaging anyone as a subcontractor, make sure they genuinely are

one. The ATO has specific tests for determining whether a worker is an

employee or a contractor, and getting this wrong has serious

consequences -- including liability for PAYG withholding, superannuation,

and Fair Work entitlements that you failed to pay.

The key indicators of a genuine subcontractor include: they have their

own ABN, they can subdelegate work to someone else, they use their own

tools and equipment, they take on financial risk for the outcome of the

work, they work for multiple businesses (not exclusively for you), and

they set or negotiate their own rates.

If a "subcontractor" works exclusively for you, uses your tools, follows

your direction in every detail, and cannot send someone else to do the

work, the ATO may deem them an employee regardless of what your contract

says. The ATO's online employee vs. contractor tool is a useful starting

point for assessing any specific arrangement.

Finding Good Subcontractors

The best subcontractors come from your existing network -- tradies you've

worked alongside, people you've met on site, or recommendations from

suppliers and industry contacts. This is the same word-of-mouth trust

dynamic that fills your own job pipeline.

Beyond your network, trade-specific Facebook groups, local tradie

forums, SEEK, and industry associations are useful. For specialist

subcontractors -- a plastering team for a builder, a licensed gas fitter

for a plumber -- the pool can be smaller and the lead time to find

someone reliable can be longer. Build those relationships before you

desperately need them.

What to Cover in a Subcontractor Agreement

Every subcontractor engagement should be documented in writing. A simple

subcontractor agreement doesn't need to be complicated, but it should

cover:

• Scope of work: Exactly what the subcontractor is engaged to do

• Rate and payment terms: Hourly, daily or fixed price, and when

payment will be made

• Quality standards: What standard of work is expected and your right

to require rectification

• Insurance requirements: That they hold their own public liability

and workers' compensation (where required)

• Confidentiality: Client details and your business information

• GST: Whether quotes are inclusive or exclusive of GST

• Termination provisions: How either party can end the engagement

This protects both parties and makes expectations clear before any work

starts. A dispute without a written agreement is significantly harder

and more expensive to resolve.

Insurance Requirements

Before a subcontractor sets foot on one of your job sites, verify that

they hold adequate insurance. At minimum, this means public liability

insurance (typically $5-$20 million cover) and, if they have their own

employees, workers' compensation insurance.

Ask for a copy of their current certificate of currency for both

policies. Check the expiry date. Some head contractors and builders

require minimum $20 million public liability from all subcontractors --

know your contractual obligations before engaging subbies with lower

cover.

If a subcontractor causes damage to a client's property or injures

someone on site and they don't have adequate insurance, you as the head

contractor may end up bearing the liability. This is not a box to leave

unchecked.

Setting Quality Standards

The work your subcontractors do reflects on your business. Your client

doesn't care which individual did the work -- they care that it was done

to your standard. This means being clear about your quality expectations

before work starts, doing site visits and quality checks during and

after work, and being willing to require rectification when standards

aren't met.

This is harder to do than it sounds, particularly with experienced

subcontractors who are confident in their own approach. The key is

establishing standards at the start of the relationship -- not mid-job

when you're already in conflict. Walk the first job together. Show your

standard. Inspect the work before signing off.

Paying Subcontractors

Most subcontractors operating as sole traders or through their own

company will invoice you for their work inclusive of GST. You pay their

invoice and claim the GST on your BAS.

Under the Taxable Payments Reporting System (TPRS), if your business is

in the building and construction industry (including electrical,

plumbing, and most trade work), you are required to report all payments

to subcontractors to the ATO annually using the Taxable Payments Annual

Report (TPAR). This is lodged by 28 August each year and covers all

payments made to contractors in the previous financial year.

Keep records of every subcontractor payment throughout the year -- date,

amount, ABN, and description of work. Your accounting software should be

able to generate the TPAR data if you've been recording payments

correctly.

Managing Cash Flow With Subcontractors

Subcontractors add complexity to your cash flow. You typically need to

pay them before you receive payment from your client. On small jobs this

is manageable. On larger jobs -- particularly where you're waiting on a

progress claim payment from a head contractor -- the gap between paying

your subcontractors and receiving your own payment can be significant.

Plan for this by understanding your cash position before committing to

jobs that rely heavily on subcontracted labour, building payment terms

into your client contracts that align with your subcontractor payment

obligations, and maintaining a cash buffer specifically for

subcontractor payments.

When Subcontractors Let You Down

Even with the best systems, subcontractors occasionally don't deliver --

they don't show up, they do poor quality work, or they create problems

with your client. Have a clear process: communicate the issue directly

and professionally, document everything in writing, withhold payment for

unsatisfactory work until rectification is completed, and maintain

relationships with backup subcontractors in each trade so you're never

entirely dependent on one person.

The tradies who manage subcontractors well treat it like managing any

other important business relationship -- with clear expectations, regular

communication, and respect for the other party's interests. That

approach builds the kind of loyal subcontractor relationships that make

growing your trade business genuinely sustainable.

## Setting Up Proper Contracts and Legal Protection Before you bring a subcontractor on board, get a solid contract in place. This isn't about being difficult — it protects both you and them. Your contract should clearly outline: **What needs to be in your subcontractor agreement:** - Scope of work and deliverables - Payment terms (when and how they get paid) - Timeline and deadlines - Insurance and liability requirements - What happens if work doesn't meet standards - Dispute resolution process - Confidentiality clauses if relevant - Whether they can subcontract to others (usually you'll want to say no) In Australia, the key thing to get right is worker classification. The ATO takes this seriously. Your subcontractor must genuinely be operating as an independent business — they should have an ABN, be registered for GST (if over the threshold), and ideally be working for multiple clients, not just you. If they look like an employee in all but name, the ATO can reclassify them, and you'll face penalties, back pay, and superannuation obligations. Get a lawyer to draft or review your standard contract. It'll cost a few hundred dollars upfront but saves thousands in disputes. Many tradie-focused legal services offer templates or flat-fee reviews specifically for trade businesses. ## Payment Systems and Cash Flow Management How you pay subcontractors directly affects your cash flow and compliance obligations. Most tradies use one of three methods: **Invoice-based payment:** The subcontractor sends you an invoice (with their ABN and GST if registered), you pay them. Simple, but you need to track these carefully for tax purposes. **Milestone payments:** You pay when certain work stages are complete. This protects you if quality issues arise — you can withhold final payment until everything's done properly. **Weekly or monthly retainers:** Some subcontractors prefer regular payment for ongoing work. This works if they're reliable and you have consistent work. Whichever method you choose, use accounting software to track it properly. Xero or Tradify both handle subcontractor invoicing well and integrate with your tax records. You'll need this data at tax time anyway, and it keeps your records clean if there's ever a dispute. **Key payment considerations:** - Never pay cash without a receipt and invoice — the ATO flags this - Always get an ABN before paying anyone - If they're not GST-registered and under the $20k turnover threshold, that's fine, but confirm it - Keep payment records for at least 5 years - Consider payment terms that protect you (e.g., 7-14 days) rather than paying upfront One important note: if a subcontractor owes tax or has been classified as a sham contracting arrangement elsewhere, you could face compliance issues. It's worth doing a basic check on new subcontractors, especially for larger jobs. ## Managing Performance and Quality A subcontractor who does sloppy work reflects on you, not them. Your client blames you. So you need systems to manage quality without micromanaging. **Quality checkpoints:** - Inspect work at milestones, not just at the end - Have clear standards written into the scope of work - Document any issues (photos, notes) immediately - Give feedback fast — don't let problems compound - If quality is consistently below standard, have a conversation or find someone else **Accountability:** Build in incentives for good work. Some tradies offer small bonuses for jobs finished early or with zero defects. Others retain a small percentage (5-10%) of final payment until a 30-day defect-free period passes. Make sure this is in your contract though. Also keep communication clear. Use Tradify or similar software to send job details, schedules, and photos. Reduces confusion, creates accountability, and gives you a paper trail if things go wrong. ## Insurance and Risk Management This is non-negotiable. Every subcontractor working on your jobs needs public liability insurance. You should also have your own public liability that covers subcontractor work — check your policy, as some exclude uninsured subcontractors. Before they start, get a copy of their current insurance certificate. Check the date, make sure coverage is active, and verify the amount ($5m-$20m is typical for trades). If they don't have insurance, they don't work on your jobs. It's not worth the risk. For larger projects or high-risk work (heights, electrical, gas), consider requiring additional coverage or workers' compensation insurance. Some clients will also require proof of subcontractor insurance before work starts. Protect yourself further with BizCover or similar providers — a good business insurance policy for tradies usually covers liability when using properly insured subcontractors. --- ## Frequently Asked Questions