Cash Flow for Traffic Control Companies: Payment Terms and Getting Paid

Traffic control cash flow is the gap between paying your crews and getting paid by clients. Wages, super and tax go out every pay run, while builders and councils often pay 30 days or more after month end. Close the gap by sizing it, setting terms before the first shift, invoicing from signed dockets within days, and following up on a fixed routine.

A traffic control company can be profitable on every job and still fail because it runs out of cash. Labour is the biggest cost in this business, and it is paid long before the client pays you. If you are still setting up, our guide to starting a traffic control company covers the basics; this one covers how to measure that gap, how to shorten it and what to do when a client simply will not pay.

Why traffic control companies run short of cash

Look at where the money goes and when.

• Wages are paid weekly or fortnightly under the award or agreement, with payslips due within one working day of payday.
• Superannuation now has to be paid with each pay run. From 1 July 2026, payday super generally requires contributions to reach the employee's fund within seven business days of payday, replacing the old quarterly deadline. Check the current rules and exceptions with the ATO.
• PAYG withholding is remitted monthly or quarterly depending on your size.
• GST on your invoices is reported on your BAS. Depending on how you account for GST, you may owe it before the client has paid you. Ask your accountant which basis suits you.
• Fuel, tolls, repairs and equipment are paid on supplier terms that are often shorter than your clients' terms.

Meanwhile, client terms in construction are frequently 30 days from invoice or 30 days from the end of the month, and some large principals take longer. A shift worked on the first of the month can easily become cash six to eight weeks later.

How to size your cash flow gap

You do not need a finance degree to estimate how much working capital the business needs. Use this method with your own figures.

The figures are made up; the point is the shape. In this example the business needs over $300,000 funding work it has already done. Grow by 25% and that figure grows by 25% too, before the new clients pay a cent. That is why growth eats cash.

Two numbers in that table are within your control: docket lag and actual payment time. In this example, every week you remove from the gap frees $46,000. That is usually cheaper than any loan.

Set payment terms before the first shift

The time to agree terms is before you roster anyone. Once a crew has worked, you have lost most of your leverage.

Credit applications and checks

For any client who wants terms, ask for a credit application: legal entity name, ABN, directors, accounts contact, trade references and the terms they are requesting. Check the ABN and entity details. For builders you have not worked with, ask other subcontractors about their payment habits. Set a credit limit and review it if their work with you grows.

Terms that match the client

• Private and one-off clients: a deposit or payment on completion, or card payment for small jobs.
• Small builders and trades: short terms, such as 7 or 14 days, with a clear credit limit.
• Established principal contractors and councils: longer terms may be the price of the work. Factor the cost of carrying that debt into your rates and your tender pricing.

Know their invoicing rules

Large clients reject invoices for the smallest reasons: missing purchase order number, wrong project code, docket not attached, invoice not lodged in their supplier portal, or a cut-off date missed by a day. Ask for their accounts payable requirements in writing and set them up in your system before the first job. A rejected invoice can cost you a full payment cycle.

Invoice fast and invoice right

The single biggest improvement most operators can make is shortening the time between the shift and the invoice.

1. Get the docket signed on site. The client's representative signs off start time, finish time, breaks, crew and equipment while everyone remembers the day. A digital docket with a timestamp and signature removes most later arguments. Our guide to traffic control dockets covers what a good one records.
2. Check it the same day. Office staff compare the docket with the booking and flag anything odd, such as an extension without approval or a missing signature.
3. Invoice within a day or two, or in a weekly batch if that is what the client wants. Attach the signed dockets and quote the PO number.
4. Follow the client's claim cycle on projects. Many principal contractors want monthly progress claims by a set date. Miss it and you wait a month. Build a tidy evidence pack each time; see our guide to traffic control progress claim evidence.

Disputed hours are the other killer. A client who queries one line on a 30-line invoice often holds the whole invoice. Agree on how disputes are handled: pay the undisputed amount now and resolve the rest separately.

Security of payment laws: a powerful but strict tool

Every state and territory has security of payment legislation for the construction industry. These Acts give people who carry out construction work, or supply related goods and services under a construction contract, a statutory process to claim progress payments and have disputes decided quickly by an adjudicator. Whether a particular traffic control engagement is covered depends on the work and the contract, so get advice.

In NSW, the Building and Construction Industry Security of Payment Act 1999 is on the NSW legislation website. In broad terms:

• A payment claim must meet the Act's requirements, including stating that it is made under the Act.
• The respondent must reply with a payment schedule within the time set by the contract or 10 business days, whichever is earlier, stating what it will pay and why. If it does not, it can become liable for the full claimed amount.
• The Act caps how long payment can be delayed: progress payments to subcontractors are due no later than 20 business days after the claim, unless the contract provides an earlier date.
• "Pay when paid" clauses, which make your payment depend on the head contractor being paid, generally have no effect.

Other states have their own Acts with different time limits, forms and processes, and some are being reformed. The deadlines are unforgiving: miss one and you can lose the right to adjudicate that claim. Talk to a construction lawyer before you serve your first claim under an Act.

A collection routine that actually gets used

Most overdue debts are not disputes. They are invoices nobody has followed up. Put a routine in place and stick to it.

Two practical rules help. First, the person who chases debt should not be the person who books the work, so relationships do not soften the follow-up. Second, decide your credit-hold policy in advance and apply it consistently. Continuing to send crews to a client who is 60 days behind is lending them money at no interest.

Protect cash with forecasting and buffers

Keep a 13-week cash forecast

List expected receipts by client and week, and expected payments: each pay run, super, PAYG, GST, loan and lease repayments, insurance and major supplier bills. Update it weekly. It shows you a crunch six weeks out, while you still have options.

Set tax money aside

GST, PAYG withholding and super are not your money. Many operators move these amounts into a separate account every pay run so they are there when due. If you fall behind with the ATO, talk to your accountant early; ignoring it makes it worse.

Watch client concentration

If one builder makes up most of your revenue, their payment habits become your cash flow. A slow payment from them can cause a wage crisis. Spread the risk where you can, and work out how many weeks you could survive if your biggest client stopped paying.

Use finance deliberately

Overdrafts, invoice finance and equipment finance all have a place, but they cost money and come with conditions. Use them for planned growth, not to cover a broken collection process. Get your accountant to model the cost before you sign.

Next steps

Calculate your own gap using the table above, then pick one thing to shorten it this month: same-day docket sign-off, faster invoicing or a debtor routine. Check your award and pay obligations with the Fair Work Ombudsman so cash pressure never becomes an underpayment problem. TrafWise turns signed digital dockets into invoice-ready records, which is usually the quickest week you can take out of the cycle.