Start the business day after your documented due date: confirm the bill matches what the buyer approved, including ABN, tax invoice wording if GST applies, and purchase order references. Send a short, factual email with invoice number and balance, then repeat on a predictable cadence. Offer one clear way to pay. If the balance is material and silence continues, call accounts payable, log promises, then consider the Australian Small Business and Family Enterprise Ombudsman or legal advice before you threaten steps you cannot defend. This article is practical guidance only and is not legal advice.
Strategy
Effective follow-up pairs a compliant invoice with timing that respects your written terms and calm repetition. Large buyers now publish payment metrics under the Payment Times Reporting Scheme, which helps you set expectations before you chase.
Payables teams clear queues in batches. A polite, factual nudge returns your file to the top without sounding adversarial. Under the Payment Times Reporting Scheme, large reporting entities publish how long they take to pay small business suppliers, which helps you benchmark behaviour before you assume bad faith (Payment Times Reporting Regulator, Helping small business).
Send a neutral check-in on the first business day after the due date in your contract or invoice, unless you granted a different grace period in writing. Many Australian business-to-business invoices use fourteen-day or thirty-day terms, but only the wording you and the buyer agreed counts. If you are registered for GST, make sure the document still reads as a tax invoice where required so the customer can process it (Australian Taxation Office, Tax invoices).
Assume every message may be forwarded. State the amount, invoice number, due date, and bank details or payment link. Ask for a pay date or for the accounts payable contact who owns the ticket. Bruce Billson, Australian Small Business and Family Enterprise Ombudsman, said in office guidance on small business debt that, in many cases, "the amount of debt is not in dispute, just the means and timing of paying it," which is why calm, specific language often keeps trading relationships intact (Australian Small Business and Family Enterprise Ombudsman, media release, 2024).
Most stalls trace back to metadata: wrong trading name, missing purchase order, or a line total that does not match the accepted quote. Tie each line item to the approved scope, keep the same thread for reminders, and fix errors quickly so the due date argument stays on solid ground.
Each state and territory has Security of Payment laws that can offer adjudication-style pathways for certain building and construction payments, with strict notice and time limits. If your debt sits in that sector, read the rules for your jurisdiction early because missed deadlines can close options. Confirm facts with a construction lawyer before you rely on any timetable.
Sources
These points come from the Payment Times Reporting Regulator and the ASBFEO, not generic blog advice. They explain why disciplined follow-up is a cash-flow control, not a personality trait.
In the Payment Times Reporting Regulator January 2026 update, analysis of payments for the period 1 January to 30 June 2025 showed the average number of days large businesses take to pay 95 per cent of small business invoices worsened to 64 days from 58 days in the prior cycle, while the Regulator continues to highlight faster and fairer payment as the leadership standard (Payment Times Reporting Regulator, Media release, January 2026).
Payment Times Reporting Regulator, Media release (2026). View source
The Payment Times Reporting Regulator July 2025 update reported that, across reporting cycle eight, only 68.1 per cent of small business invoices were paid on time relative to agreed terms, meaning roughly one third were paid after the agreed payment terms even though average common payment terms were about 29 days (Payment Times Reporting Regulator, Regulator’s Update, July 2025).
Payment Times Reporting Regulator, Regulator’s Update (2025). View source
Workflow
Work through verification, written reminders, phone contact, documentation, and escalation in order. Adjust for Commonwealth procurement rules, construction adjudication timelines, or finance-company payment plans, but keep the sequence consistent.
Re-open your PDF and confirm the legal or trading name matches the buyer master data, your Australian Business Number is correct, tax invoice wording appears when you are GST registered, line items match the accepted quote, and any purchase order or reference fields are complete. If you find errors, send a corrected tax invoice and note the change clearly.
Tip: Cross-check mandatory fields with Invoice Mama’s Australian tax invoice guide so payables cannot park the file for missing wording.
Use a subject line that includes the invoice number. Paste the amount, due date, payment instructions, and ask for confirmation of the pay date or for the accounts payable specialist handling the invoice.
Shorten the body to bullet facts. Note that this is the second notice. Only mention statutory interest or recovery costs if your contract or engagement letter already allows them and you have verified the clause with a lawyer.
On the phone, mirror the email facts. Ask whether the invoice is in the enterprise resource planning system, whether it is in a dispute queue, and who can commit to a pay date this week. Write down names, extensions, and promised dates.
Store PDF invoices, email threads with time stamps, call notes, and payment promises in your job management or accounting tool. Export accounts receivable ageing monthly so you can show a disciplined history if you later need mediation or court assistance.
After a documented internal cadence fails, consider lodging a payment dispute with the Australian Small Business and Family Enterprise Ombudsman, speaking with your state or territory fair trading office about general business disputes, or briefing a solicitor about letters of demand and tribunals. Construction creditors should also ask whether Security of Payment timelines still allow adjudication in their state or territory.
Tip: ASBFEO publishes dispute intake at asbfeo.gov.au and explains that it does not provide legal advice or act as a debt collector, but it can help many operators find a workable pathway (Australian Small Business and Family Enterprise Ombudsman, Dispute support).
Checklists
Use these lists as guardrails before you press send. Swap in your brand voice, but keep the facts intact.
Pitfalls
Most self-inflicted damage comes from skipping preparation, not from sending one extra reminder.
Problem
Long narratives about personalities give payables an excuse to park the ticket while an internal review runs.
Fix
Keep relationship issues on a separate note, but keep the collections thread limited to invoice data and promised pay dates.
Problem
Unilateral penalties can breach Australian Consumer Law unfair terms rules in standard form small business contracts and may damage trust even when enforceable.
Fix
Only reference fees or interest that already appear in a signed contract or statutory instruments your lawyer confirmed, and show the maths exactly as written.
Problem
If you are GST registered, missing "tax invoice" language or purchaser Australian Business Number details on large taxable sales can slow both payment and your customer's GST credit claims.
Fix
Fix the document first, apologise once if the delay was your metadata error, then restart the reminder cadence from a clear baseline.
Problem
Construction Security of Payment laws and general limitation periods can expire while you wait for goodwill.
Fix
Diarise the earliest professional deadline from your state or territory regime and from your contract, then seek legal advice before those dates pass.
Plain-language answers for Australian freelancers, tradies, and office managers who handle their own receivables.
Open with facts: invoice number, balance in Australian dollars, due date, and payment instructions. Ask for a pay date or the accounts payable contact. Attach the same PDF again, keep one email chain where practical, and stay neutral in tone so the message can be forwarded without embarrassment.
Send it on the first business day after the due date defined in your contract or invoice unless you documented a different grace period. If you use calendar-day terms, count consistently with what you wrote on the quote and the tax invoice.
Email first so payables has a searchable record. Call if there is no substantive reply within forty-eight to seventy-two business hours or if the balance is material. On the phone, repeat the same facts as the email and log who owns the next step.
Use a subject line that includes the invoice number, then three short lines for amount due, due date, and a polite request for payment or for the buyer to flag a processing issue. Close with one question such as "Can you confirm the pay date this week?"
Many Australian operators pair a day-one email with a second note midweek and a phone call by the end of week one for material balances. Government and enterprise purchase orders can need longer loops, so document those variances in your credit policy.
Only if your contract allows suspension after notice, or if safety or regulatory duties require a pause. Otherwise stopping work can expose you to breach claims. Prefer documented holds on discretionary scope after legal advice.
Consider the office after good-faith attempts stall, especially for payment disputes with larger counterparties. The Ombudsman explains that it helps small business operators resolve complaints and disputes, including contract and payment disputes, through case managers rather than acting as a debt collector (Australian Small Business and Family Enterprise Ombudsman, Dispute support).
Large reporting entities publish standard terms and actual payment times for small business suppliers. You can read the Payment Times Reports Register before you agree to extended terms, then use that transparency when you negotiate cash collection policies (Payment Times Reporting Regulator, Helping small business).
Store PDF tax invoices, email threads with time stamps, call logs with names, and payment promises. Export accounts receivable ageing monthly. Consistent records show you made reasonable commercial efforts before you escalated.
Invoice Mama also publishes a United States-focused guide with net thirty cadence and Internal Revenue Service adjacent context at /guides/how-to-follow-up-on-unpaid-invoices when you bill United States buyers under United States terms.
Keep learning
Australian GST and invoicing playbooks plus general billing habits that still lift payment speed.
Mandatory wording, Australian Business Number rules, the purchaser requirement for larger taxable sales, and GST line formats.
Read guideTurnover thresholds, registration timing, and how GST appears on the documents you later chase.
Read guideAustralian Business Number habits, payer withholding context, and BAS alignment before balances age.
Read guideProgress claims, site addresses, and purchase order discipline that reduce payables stalls.
Read guideFrom reminders to paid
You set payment expectations in the quote and the bill. Invoice Mama helps you issue branded invoices, keep terms and ABN blocks visible, and stay consistent when it is time to nudge accounts payable.