Corporate Clients Not Paying on 30-Day Terms? A Collections Playbook for Australian Small Business

Last reviewed: October 2026

How late do large Australian businesses actually pay small suppliers?

Most invoices are paid close to terms, but the slowest ones take almost twice as long. The Payment Times Reporting Regulator's August 2026 Regulator's Update covers Reporting Cycle 10, which is July to December 2025. Large businesses offered average common payment terms of 29 days and paid in an average of 27.2 days. That average hides the tail. It took 37 days to pay 80% of small business invoices and 55 days to pay 95% of them.

The Regulator's own summary is blunt: it is taking almost double the average agreed payment term for the vast majority of small business invoices to be paid. In the same cycle, 2,720 reporting entities, or 84%, took more than 30 days to pay 95% or more of their invoices. Some industries are worse than the average. Manufacturing and Professional, Scientific and Technical Services offered terms of around 30 days, yet took 68 days and 64 days respectively to pay 95% of small business invoices.

There is some good news. Invoices paid within 30 days rose to 69.8% in Reporting Cycle 10, a 6.6 percentage point improvement since the scheme started, and the 95th percentile payment time fell from 62 days to 55 days. So a client paying you in 70 days is not typical. It is in the slowest slice, and that is useful to know when you raise it with them.

Source: Payment Times Reporting Regulator, Regulator's Update August 2026, Table 1.

How do I check if a big client pays on time before I sign?

Look the client up on the Payment Times Reports Register. Under the Payment Times Reporting Scheme, large businesses and some government enterprises must report their small business payment terms and times every six months. In general that means groups with consolidated revenue over $100 million. The Regulator states that any small business owner can use the register, that it is free, and that it does not need an account or a login.

Two parts of the register are worth checking. The first is the client's own reports: its stated payment terms and how long it actually takes to pay. The second is the Fast Small Business Payer List, launched in February 2026, which recognises large businesses that consistently pay their small business suppliers in 20 days or less. The August 2026 update says the list currently recognises 96 reporting entities. A slow small business payer framework is also progressing, and entities that meet its criteria may have that status published.

What you do with the answer is a pricing decision, not a moral one. If a prospect's reports show it takes 60 days to clear most invoices, quote as if you will be paid in 60 days. Build the financing cost into the price, ask for a deposit or milestone billing, or ask to be paid through a faster channel. The worst outcome is signing a contract that assumes 30 days and running out of cash in month two.

Why do corporate clients pay small suppliers late?

Usually because the invoice is stuck somewhere in their process, not because someone decided to hold your money. A large business pays through an accounts payable team that only releases invoices that match an approved purchase order and have been signed off by the person who ordered the work. Many run payment on fixed cycles. An invoice that misses one cycle waits for the next, and an invoice with the wrong reference can sit in a queue that nobody watches.

That changes how you chase. Polite reminders to the person who engaged you rarely move money, because they do not control the payment. The useful questions go to accounts payable: has the invoice been received, has it been approved, is anything missing, and which payment run is it in? The Australian Small Business and Family Enterprise Ombudsman's guidance on the Payment Times Reporting Scheme makes the same point in its invoicing tips: find a contact in the accounts area and check what they need to process your invoice.

What is the best collections process for large clients?

The best process tracks each large invoice through the client's approval steps and acts on fixed dates. ASBFEO's invoicing tips give the backbone: double-check the invoice details match the order and delivery receipt, confirm it has been received, check ten days before the due date that it has been processed and is due to be paid, and contact the accounts area one to two days after it falls overdue. Here is that turned into a playbook:

1. Before the work starts, get the supplier set-up right. Complete the client's vendor forms, confirm your bank details through a known contact, and get a purchase order number in writing. No purchase order, no invoice the system can match.
2. Invoice on the day the work is delivered. Include the purchase order number, the name of the approver, and the exact description the order uses. Send it to the address accounts payable nominates, not just the person who hired you. Use e-invoicing if the client supports it.
3. Confirm receipt within a few days. Ask accounts payable to confirm the invoice is in their system and whether anything is missing. Note the date and the name of the person who confirmed.
4. Ten days before the due date, confirm it is approved and scheduled. Ask which payment run it is in. If it is not approved, go back to the person who engaged you and ask them to sign it off.
5. One to two days after it falls overdue, call accounts. Ask if a problem has prevented payment and what you can do to fix it. Keep it factual.
6. At 14 days overdue, put it in writing. A short, professional letter that sets out the invoice, the agreed terms and the history of contact, addressed to the person who supervises the area. ASBFEO describes this as a chance for the other party to fix the situation, and as evidence if it needs to be escalated.
7. If writing does not work, use the formal channels. ASBFEO's Dispute Support tool has an option for recovering unpaid invoices and points you to the right service, which may be ASBFEO or a specialised or state-based service.

For the reminder emails themselves, our guide to automating the chase on overdue invoices sets out a cadence and the tone for each step. The difference with large clients is that steps 3 and 4 do most of the work. An invoice confirmed as approved and scheduled before its due date rarely needs a reminder at all.

What about the contract terms themselves?

Read them before you sign, because long payment terms are often in the large client's standard contract. Australia's unfair contract term protections apply to standard form contracts where at least one party is a small business. The ASIC information sheet on unfair contract terms for small businesses defines a small business as one employing fewer than 100 people when the contract is signed, or with turnover under $10 million in the last income year. ASIC covers financial products and services; for other contracts, the ACCC and state consumer protection agencies are responsible. A term is void only if a court finds it unfair, and payment terms are not unfair just because they are long. If a term looks one-sided, ask for a change in writing and get advice before signing.

Do I have to pay GST on invoices my client has not paid?

Yes, if you account for GST on a non-cash basis. The ATO's page on choosing a GST accounting method states that on the non-cash basis you account for GST on a sale in the reporting period in which you issue a tax invoice or receive payment, whichever happens first. A slow-paying client can therefore cost you the GST before it pays you a cent.

Here is a worked example, not client data. A consultancy issues a $22,000 invoice, including $2,000 GST, to a corporate client on 20 September. It reports on the non-cash basis, so the $2,000 belongs on the September quarter BAS. The client pays on 25 November, 66 days later. The consultancy has funded the GST for most of two months, on top of waiting for its fee.

The ATO says businesses with aggregated turnover of less than $10 million, or that use cash accounting for income tax, can choose either method. On the cash basis, GST on that sale is reported when the payment arrives. Whether to switch is a decision for the business and its registered tax or BAS agent, because the method also changes when you claim GST credits on purchases. For a business with a few large, slow clients, it is a question worth asking. For the wider BAS workflow, see how BAS preparation can be automated.

What if the invoice is never paid?

On the non-cash basis, you may be able to get the GST back. The ATO's page on types of GST adjustments says you may have a bad debt adjustment if you write off a bad debt relating to a taxable sale, or if a debt relating to a taxable sale has been overdue for 12 months or more. If you later recover the money, there is a further adjustment. The detailed rules are in GSTR 2000/2. The record of every call, email and letter from the playbook above is what supports a write-off, which is one more reason to keep it.

What should a bookkeeper track for clients with big slow payers?

Track where each large invoice is, not just how old it is. A standard aged receivables report tells you an invoice is 45 days old. It does not tell you whether it is approved and due in Friday's payment run, or stuck because the purchase order number was wrong. For clients with a handful of large customers, a weekly review that adds three columns to the aged report changes the conversation: date receipt confirmed, date approval confirmed, and scheduled payment date.

A few other numbers are worth keeping for each large customer: the average days to pay over the last six invoices, the share of the client's total receivables sitting with that one customer, and the GST already paid on its unpaid invoices. When one corporate customer is a large share of receivables and pays in 60-plus days, the owner needs to see that in the monthly report, not discover it when payroll is due.

This is detailed, repetitive work across many clients, which is why it suits AI-assisted bookkeeping with a person reviewing the exceptions. A dedicated AI can read the aged receivables each week, draft the receipt and approval confirmation emails for each large invoice, log the replies, and flag the invoices that are not scheduled ten days out. The bookkeeper decides who calls the client and what gets said. For a practice running this across a client list, our page on dedicated AI for bookkeepers covers how that division of work is set up.

What is Agentive's view on chasing large clients?

Agentive's view is that most small businesses chase too late and too politely, at the wrong person. The reminder emails start when the invoice is already overdue, they go to the friendly project contact, and they ask whether there is "any update". By then the invoice has missed a payment run. Nearly all the leverage sits before the due date, in confirming receipt, approval and scheduling with accounts payable. That work is boring, which is exactly why it gets skipped, and why it is a good fit for the Agentive finance skill.

The second point is that late payment is a pricing input. The Payment Times Reports Register makes a large client's payment record public. A small business that looks it up before quoting can price for the real wait, ask for milestones, or walk away. Agentive's AI Employee runs on a dedicated single-tenant server on AWS Sydney, with client data stored onshore and never used to train models, which matters when the work involves reading a business's full receivables ledger and its customers' details.

One warning: a change of bank details is a common moment for fraud. If a client or supplier asks you to update payment details, verify it through a contact you already know. The same caution applies to the payment-provider scams we covered in our post on the card surcharge ban.

Thirty days on paper, a process in practice

A large client that pays in 70 days is in the slowest slice of Australian payers, not the middle. The Payment Times Reports Register lets you see that before you sign. Once you are working together, the money moves when the invoice is matched, approved and scheduled, so put your effort there, ten days before the due date rather than ten days after it. Keep a written record, use ASBFEO's tools if it comes to that, and talk to your BAS agent about how GST timing is hitting your cash. If you want to see how a dedicated AI for business owners would run the weekly receivables review, that is a good place to start.

General information for Australian businesses and bookkeepers, not legal, financial or tax advice. Figures and rules are stated as at 14 October 2026 from the Payment Times Reporting Regulator, ASBFEO, ASIC and ATO pages linked above. The worked example is illustrative. Speak to your registered tax or BAS agent, or a lawyer, about your own situation.