Your customer is ignoring invoice reminders: what to do next

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When a customer ignores your invoice reminders, stop sending more of the same. Check the invoice, phone accounts payable, then climb one rung at a time: final notice with the fee applied, letter of demand, then agency or court.

This page is the ladder, written for an Australian business owner first. The UK, New Zealand and US equivalents sit in the same table, because the rungs are the same everywhere and only the day-counts and the courts change. Every rung is dated and sourced. The letter templates live on their own pages and are linked from here.

How do you politely remind someone of an outstanding invoice? Name the invoice number, amount and due date, ask if there is a problem with the invoice, and give a payment link. Keep it to three sentences. See email templates for invoice payment reminders.

Why a customer ignores invoice reminders

Customers ignore reminders for three reasons: the reminder never reached the person who pays bills, there is a dispute nobody has raised, or your invoice has been ranked behind everyone else's. The first job is to find out which.

The Xero Small Business Insights data for the June 2026 quarter puts the average Australian small business at 22.9 days to be paid and 6.0 days late (Xero SBI, published 30 Jul 2026). A customer who is 30 days past due and silent is well outside that band. Before you escalate, rule out your own side.

1. Confirm the invoice went to a person who pays invoices. The address on the contact record is often the buyer, and accounts payable never saw it.
2. Check the invoice matches the order. A wrong PO number, a wrong entity name or a missing quote reference is a common reason for quiet non-payment.
3. Check the reminders actually sent. Xero's native reminders only fire on invoices marked as sent, to contacts with an email address on file, and only up to five per organisation (Xero Central).
4. Check the customer's account for credits or part-payments they may believe settled it.

If all four are clean, the customer has chosen not to pay yet. More reminder emails stop working at that point, and the ladder starts.

The escalation ladder, rung by rung and dated

Six rungs, each with a day-count from the due date. The order is fixed across every official source. The day-counts are yours to set, and they belong in your payment terms.

The cadence of four to six touches, at roughly 3, 7, 14 and 30 days overdue, is the most common one published by practitioners (BILL). The 60 to 90 day hand-off to an agency, after an ignored demand letter, is the consensus in collections guidance (Summit).

Official guidance on unpaid invoice reminders and debt collection for small business in Australia

The official Australian guidance is ASBFEO's: friendly reminders, negotiation, letter of demand, then a collection service bound by the ACCC and ASIC guideline. NSW small claims go to the Local Court up to $20,000.

The Australian Small Business and Family Enterprise Ombudsman sets the order. If a debt is not recovered after friendly reminders, informal negotiation and a letter of demand, the business may engage a debt collection service, and must follow the consumer-law obligations published by the ACCC when it does (ASBFEO, Handling debts). ASBFEO's Dispute Support tool can also point you to low-cost mediation before any of that.

The conduct rules for the collection rung are the joint ACCC and ASIC Debt Collection Guideline, ASIC Regulatory Guide 96, republished 13 April 2021. It sets reasonable contact hours, methods and frequency, and bans harassment, coercion and misleading conduct (ASIC RG 96). It binds you as well as the agency.

If the customer still does not pay, the NSW Local Court Small Claims Division hears debt disputes up to $20,000. The standard filing fee is $179 for an individual or $358 for a corporation (NSW Local Court fees). In Victoria, general commercial debt recovery goes to the Magistrates' Court, not VCAT.

The limitation period for a simple contract debt is six years in NSW, Victoria and Queensland. In NSW and the ACT the clock does not restart once it has expired; in Victoria, Queensland, WA, SA and Tasmania a part-payment or written acknowledgement resets it (Sprintlaw).

Payment terms and debt recovery for late payment invoices in Australia

Debt recovery in Australia starts with the payment terms. The terms fix the due date, the late fee, the interest rate and the escalation steps, and every rung of the ladder above is only as strong as the clause that authorises it.

ASBFEO's own sequence (reminders, negotiation, letter of demand, agency) assumes those terms exist. Without a fee clause, rung 4 is an empty threat; without a recovery-costs clause, the agency's fee comes out of your margin. Four clauses do the work for a small business that sells on credit in Australia.

1. The due date, as a number of days from the invoice date. Every day-count on the ladder runs from it.
2. The late fee or interest clause. Rate, when it starts, whether it compounds, and that the customer agreed to it.
3. The recovery-costs clause. That agency fees and court costs are recoverable from the customer where the law allows.
4. The escalation notice. That unpaid invoices will be referred to an agency after a stated number of days.

The letter of demand template covers rung 5 for Australia and New Zealand. Once the demand has been ignored, when to send an overdue invoice to a collection agency gives the day-count decision and the agency fee.

The same ladder in the UK, New Zealand and the US

The rungs do not change. What changes is the statutory interest you can add, the letter the court expects before a claim, and the small-claims limit and fee.

United Kingdom. Statutory interest at 8% plus the Bank of England base rate accrues automatically from the day after the due date, with no notice to the debtor required (Insolvency Service technical manual). Before court, the Pre-Action Protocol for Debt Claims requires a Letter of Claim by post with 30 days to respond (Ministry of Justice). The letter before action template covers it.

The Small Business Commissioner runs a free complaints service for small suppliers unpaid by larger customers, and stops once legal action starts (Small Business Commissioner).

New Zealand. The Disputes Tribunal's limit rose from $30,000 to $60,000 on 24 January 2026 (Ministry of Justice). The Commerce Commission's guidance says collectors should contact a debtor only when needed and for a reasonable purpose (Commerce Commission, June 2019). Fees are covered on late fees in New Zealand.

United States. The FDCPA and the CFPB's Regulation F (in force 30 Nov 2021) govern consumer debt collection only; a business debt is outside them (CFPB). Commercial agencies commonly charge 15% to 45% of what they recover (industry guide), and the limitation period runs 3 to 10 years by state for a written contract (Upsolve).

How to write the final notice and the letter of demand

The final notice states the fee and the next date. The letter of demand states the debt, the deadline and the consequence. Neither threatens anything you will not do, and both are kept as evidence for the court.

The final notice (rung 4) is the last email in the reminder sequence and the first one that costs the customer money. It contains four things.

• The original invoice number, date and amount.
• The late fee or interest now applied, and the new balance owing.
• A statement of account showing every open invoice, not just this one.
• The date on which a letter of demand will be sent if the balance is unpaid.

The letter of demand (rung 5) goes on letterhead, by post and by email, with a fixed deadline: 30 days in the UK where the protocol requires it, commonly 7 to 14 days in Australia, and a similarly short window in New Zealand. The wording is on the letter of demand template and collection letter templates pages.

The earlier, softer emails are on email templates for invoice payment reminders. Keep copies of every message and the send log; they are the evidence for rung 6.

Running the ladder without doing it by hand: Paidnice

Xero's native reminders cover rung 2 and stop. An accounts receivable app runs rungs 2 to 5 on a schedule: escalating reminders, SMS, statements, the fee on the ledger, and the hand-off task for the demand letter.

Xero sends up to five reminder emails per organisation on one schedule, with no SMS, no scheduled statements and no fee (Xero Central). That is the reminder rung, done well, and nothing above it. QuickBooks Online is similar: up to three reminders, email only, though it can add an automatic late fee with a grace period (QuickBooks help).

Apps that sit on Xero and QuickBooks add the rest. Chaser adds email and SMS reminders and credit checks, from £199 a month (as at September 2026, verify current pricing).

Paidnice, from AUD 99 a month, runs rungs 2 to 5 from the ledger. The setup that matches the ladder above:

• Reminder schedule at day 3, 7 and 14 per customer group, with the day 14 message sent by SMS as well as email. See SMS payment reminders for Xero.
• Automatic statement on the 1st of the month to every customer with an open balance. See automatic customer statements in Xero.
• Late fee or statement interest from day 21, posted to Xero as a draft invoice for review, or approved. See adding late payment fees in Xero.
• Escalation at day 30, raised as a legal-letter task and assigned to a named person, so the letter of demand does not depend on someone remembering.

Customers using it cut their average wait for payment in half, within 30 days.

If you are weighing up the apps, credit control software is the comparison. The point for this page is simpler: an ignored reminder is a scheduling problem until rung 3, and a leverage problem from rung 4. Fix the schedule so the fee and the letter arrive on the dates your terms promised.