Thirty days from which date? Read the payment clock.

The same phrase produces two expected dates

Suppose your office forecasts payment thirty days after issuing an invoice. The customer says its process starts from an approved claim or another contractual event. Before accepting either calculation, read the agreement that actually applies.

The number of days is only part of the timing. The event that starts the period can matter just as much to the cash the business needs while waiting.

Put the relevant wording beside the job record

Locate the payment terms, claim requirements and any agreed changes. Identify the document version accepted for the job. Do not rely only on a term printed on a later invoice or a recollection of the sales discussion.

business.gov.au explains that payment terms form part of a sales contract. Where documents conflict or construction-payment rules may apply, have the actual position checked rather than choosing the date that suits the forecast.

Source: business.gov.au: Payment terms

Build a sequence of the events

Record completion of the relevant work, claim submission, receipt, any rejection and any approval. Keep the evidence for each date. Distinguish what happened from what the customer says must happen next.

An administrative status is not automatically a legal conclusion about when payment falls due. Preserve the record so an adviser can assess the terms and any applicable statutory rules.

Separate the due date from expected bank receipt

Your forecast may need to show a realistic expected receipt even when payment is contractually due earlier. Keep both dates visible. Forecasting a later receipt does not mean agreeing that the customer is entitled to pay late.

If the forecast relies on the earliest possible date, test what a delay does to wages and materials. Use a clearly labelled scenario rather than quietly changing the contract date in the account record.

Resolve ambiguity before the next commitment

For future work, ask for unclear timing provisions to be explained and appropriately documented before acceptance. Check whether submission cut-offs or milestone requirements affect when the business can claim.

Do not assume an office custom overrides the agreement or a statutory entitlement. Seek advice when a provision is unclear, particularly before agreeing a change that may increase the funding gap.

Bring the dates into the payment enquiry

When following up, identify the claim, relevant event and the date you understand applies. Ask the customer to explain a different calculation with reference to the documents.

Use Report a Debt or Report a Dispute below as appropriate if the account remains unresolved. Give CRP the timeline and agreement. A checked payment clock is a better basis for planning and advice than the phrase “thirty days” on its own.