Unpaid invoices are the biggest cash-flow killer for Sydney tradies. A plumber owed $4,200 for a bathroom renovation, an electrician chasing $1,800 for switchboard work, a builder with $45,000 in retention money withheld — these are the debts that put trades businesses under. This guide covers exactly what to do, in the right order, to recover what you're owed.
Step 1: Get the paper trail right before you do anything else
Your ability to recover an unpaid invoice depends almost entirely on your documentation. Before making any contact, confirm you have:
- A signed quote or written contract (email acceptance counts)
- A tax invoice with a clear due date — in NSW, 30 days from invoice date if not specified
- Evidence that the work was completed: site photos, sign-off from the customer, text messages confirming completion
- Any correspondence from the customer about the invoice — disputes, promises to pay, requests for extensions
If you're missing any of these, create a contemporaneous record now — notes on what work was done, when, and what you were told by the customer. Courts and NCAT weigh documentation heavily.
Step 2: Send a formal payment demand
A formal written demand is different from a reminder. It states the amount owed, the basis for the claim, a specific payment deadline (14 days is standard), the consequence of non-payment (NCAT or legal action), and your payment details. Send it by email AND registered post so you have proof of delivery.
A well-written demand letter resolves roughly 30–40% of unpaid invoice cases without any further action. Most customers who intend to eventually pay will pay now rather than face formal proceedings. Make the demand professional and unambiguous — not aggressive.
Step 3: Know which law applies to your job
NSW has specific legislation that applies to certain trade debts, and using the right one gives you faster recovery:
| Job type | Applicable law | Key right |
|---|---|---|
| Residential building work over $20k | Home Building Act 1989 (NSW) | Statutory warranty; disputes via NCAT Home Building Division |
| Commercial construction | Building and Construction Industry Security of Payment Act 1999 (NSW) | Adjudication — faster than court, binding payment decisions in weeks |
| Subcontractor work (any value) | Security of Payment Act | Can claim against head contractor, not just the client |
| General goods/services | Australian Consumer Law | Consumer guarantees; NCAT Consumer and Commercial Division |
The Building and Construction Industry Security of Payment Act (SoP Act) is particularly powerful for Sydney tradies. If you've done construction work and submitted a valid payment claim, the head contractor must serve a payment schedule within 10 business days or the full amount becomes a debt due and owing. Many tradies don't know about this right.
Step 4: The Security of Payment Act claim process
If your job is covered by the SoP Act (most commercial and residential construction work in NSW), the process is:
- 1Serve a payment claim on the respondent — your invoice must state it is made under the Building and Construction Industry Security of Payment Act 1999 (NSW)
- 2The respondent must serve a payment schedule within 10 business days acknowledging or disputing each item
- 3If no schedule is served, the claimed amount becomes due — you can recover it in the Local Court without a hearing
- 4If a schedule is served but payment is disputed, you can appoint an adjudicator through an authorised nominating authority
- 5The adjudicator makes a binding determination, usually within 10 business days of appointment
SoP Act adjudication is significantly faster than NCAT or court — a disputed $30,000 invoice can be resolved in 6–8 weeks from claim to determination, versus 4–6 months in court.
Step 5: NCAT for consumer debts under $40,000
For consumer debts (work done for homeowners, not commercial clients), NCAT is your tribunal. Lodge online, pay a fee of $40–$220 depending on the claim amount, and expect a conciliation conference within 4–8 weeks. Most residential trade disputes resolve at conciliation — NCAT members are familiar with the common disputes (defective work counterclaims, scope disagreements) and can facilitate settlement quickly.
Step 6: Use a collections agency for volume or hard cases
If you have multiple unpaid invoices, a debtor who has gone silent, or an account where the customer has moved without paying — a collections agency can be more cost-effective than individual NCAT applications. A collections agency handles: locating debtors (skip-tracing), pre-litigation demand and negotiation, and escalation to legal action only when it's commercially justified.
Most agencies work on commission — 15–25% of what's recovered, nothing if the debt can't be collected. For a $5,000 invoice you've spent six weeks chasing, paying a 20% commission to recover $4,000 is a better outcome than spending another six weeks in NCAT for 100% of a debt that may not be enforceable anyway.
What not to do
- Don't threaten to 'destroy their reputation online' or leave bad reviews as leverage — this is coercive and can expose you to a complaint under Australian Consumer Law
- Don't contact the debtor's employer or family members to pressure payment — this breaches the ACCC/ASIC Debt Collection Guideline
- Don't repossess materials from site without a court order — even if you paid for them, self-help repossession can give rise to a conversion claim
- Don't wait more than 6 years — the NSW limitation period for contract debts is 6 years from when payment was due
Recovia recovers trade invoice debt across all Sydney suburbs — from Northern Beaches electricians through Western Sydney builders to Sutherland Shire plumbers. Commission-only, no upfront cost. If you have invoices over 30 days outstanding, place them early — recovery rate drops significantly after 90 days.