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// WORKED EXAMPLETHE ARITHMETIC A DECISION RESTS ON

Aged Debtors Report: a Worked Example

Debtor days gives the average. This report shows who is late.

BY MICHAEL SHANG · SIXTEEN YEARS IN COMMERCIAL BANKING · UPDATED · 6 MIN READ

// THE SHORT ANSWER

An aged debtors report is the list a lender asks for first, because it answers what a balance sheet cannot: which customers owe the money, and how late they are. The ledger is cut into age bands per customer. Read over several months, it shows whether overdue balances are growing faster than sales, whether one name is responsible, and how much of the ledger a financier would refuse to count. A borrower's debtor days can stay almost flat while this report deteriorates sharply, which is the reason it is requested.

BASIS  Practitioner judgment from sixteen years in commercial banking, set out in How Bankers Think (Highbank Press, 2026). Every borrower on this site is a composite constructed for teaching, not a client. The market is mid-market commercial lending as practised in New Zealand and Australia; where a convention differs elsewhere, the page says so.

// MAKE THE CALL

Issue 02 — Aoraki Trade Exports. Paid in USD, costs in NZD, asking for a NZ$6m multi-currency facility. The MD won't say which currencies. Your call first, then the senior banker's.

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PART OF Trade Loan

// 01 — WHAT THE AVERAGE HIDES

Debtor days compresses a ledger into one number. Two businesses can both report 47 days when one has every customer paying at 47 and the other has most paying at 30 and a few not paying at all. A lender cares about the second business in a way the ratio cannot show, because what is advanced against a ledger is recovered from the customers who actually pay.

The report also serves a second purpose. It is a test of management. A credit controller who can say why each large old balance is old, and what is happening about it, is giving the lender information. A business that has to go and find out is giving it a different kind of information.

// 02 — HOW THE REPORT IS BUILT AND READ

One row per customer; one column per age band; a total for each
Past due share = balances past their due date ÷ total ledger
Old balance share = balances beyond the chosen age ÷ total ledger
Check: report total = debtors in the general ledger on the same date

The first thing to establish is what the bands measure. Some systems age from the invoice date and others from the due date, and on 60-day terms those are very different reports: a 31-to-60 column may hold nothing but invoices that are not yet due. Good practice keeps amounts not yet due in their own column. Unallocated credits and cash need separating too, because a credit note parked in an old band makes that band look better than it is. Unapplied cash and credit notes issued to clear disputed sums are the usual culprits. Invoices that have been cancelled and raised again restart the clock, which is why a current band much larger than recent sales deserves a question.

Read it across time and down the customer list. One report says where the ledger is; three or more show the direction. Sorting by customer shows whether the old money is spread out, which suggests a collections issue, or concentrated, which suggests one customer's trouble or one dispute.

// 03 — THE EXAMPLE

A distributor of commercial catering equipment, constructed for this page like every figure in it, gives its bank these two reports, aged from the due date, in US$ millions. Sales over the preceding twelve months rose from US$60m to US$66m. Its invoice finance facility excludes debts more than 60 days past due, and a customer's whole balance if more than 25% of it is that old. It advances 80% of what remains. Those tests and levels are the example's, not a market norm.

Not due 1–30 31–60 61–90 Over 90 Total
31 March 5.10 1.50 0.50 0.20 0.20 7.50
30 September 4.90 1.90 0.85 0.45 0.40 8.50
31 March 30 September
Debtor days 7.50 ÷ 60 × 365 = 45.6 8.50 ÷ 66 × 365 = 47.0
Past due 2.40 = 32% of ledger 3.60 = 42% of ledger
Over 60 days 0.40 = 5% of ledger 0.85 = 10% of ledger
Borrowing base at 30 September
Ledger 8.50
Over 60 days past due (0.85)
Rest of one restaurant group's account (0.35)
Eligible 7.30
Advance at 80% 5.84
80% of the whole ledger 6.80

Sales rose 10%. Debtor days moved by 1.4. Past-due balances rose by half and those over 60 days more than doubled. The restaurant group owes US$0.65m, of which US$0.30m is over 60 days past due, or 46%, so the remaining US$0.35m falls out under the cross-ageing test. Between them those deductions, US$1.20m at 80%, take US$0.96m off what the ledger appears to support, at a business that thinks its debtors are in line with its sales. Hospitality customers often pay slowly, and one group's trouble could be nothing more than that. The report does not say. It tells the lender which question to ask.

// 04 — WHAT A LENDER READS BESIDE IT

Debtor days gives the speed of the whole ledger; the ageing gives its shape. They belong together, and a gap between them is informative in itself. Debtor verification then tests whether the balances are real, which the report cannot do, since the report is prepared by the party being read.

The credit-loss provision is the accounts' own reading of the same data. Companies applying IFRS 9 or its New Zealand or Australian equivalent measure trade receivables at lifetime expected credit losses, often with a matrix applying loss rates to each ageing band. Most UK mid-market groups report under FRS 102, whose own model impairs debtors only on objective evidence of loss, unless the company has chosen to apply the recognition and measurement rules of IFRS 9 instead. A lender can compare the provision with the oldest bands either way. A provision that stayed flat while the old balances doubled is a question for the auditors as well as the finance director.

DEFINED IN ONE PARAGRAPH → · INVOICE FINANCE, THE PRODUCT FILE → · CROSS-AGEING →

// 05 — WHERE IT DECIDES A FILE

In a working-capital request the report turns a general statement into a specific one. Asking for more because debtors have grown is a reasonable story until the ageing shows that the growth is old money, and a line that funds slower customers is a different loan from one that funds more sales. The eligible receivables calculation depends on the report directly, and the report's date needs to match the borrowing base it supports.

It is also where a lender often first sees a problem. An overdue balance from one large customer, a run of credit notes in the same name, or a sudden clean-up of the oldest band just before a review are all things to ask about. In a retention-heavy trade, old balances can be perfectly proper, since the retention is not due until the job is signed off, and a good report shows them separately.

// SOURCES

The documents the statements on this page rest on. Each was opened and checked when cited.

  1. Australian Accounting Standards Board, AASB 9 Financial Instruments (compiled, 30 June 2026), the Australian text of IFRS 9 — paragraphs 5.5.15 and B5.5.35 — Requires a loss allowance equal to lifetime expected credit losses on trade receivables without a significant financing component, and names a provision matrix as a practical expedient — section 04.
  2. Financial Reporting Council, FRS 102 (September 2024 edition) — paragraphs 11.2 and 11.21 — Sets the objective-evidence test for impairment of financial assets at amortised cost and the accounting policy choice to apply IFRS 9 recognition and measurement instead — section 04.

// QUESTIONS PEOPLE ASK

What is the difference between aged debtors and debtor days?
Debtor days is a single average: receivables divided by sales, expressed in days. An aged debtors report is the list behind that average, split by customer and by how old each balance is. The average tells a lender how fast the whole ledger is turning. The report shows whether a few overdue customers are hiding inside a respectable figure, which is why a lender asks for both.
What are the age bands in an aged debtors report?
Commonly not yet due, 1 to 30, 31 to 60, 61 to 90 and over 90 days, though accounting systems allow others, and some split out balances beyond 180 days. The important point is what the bands count from. A report aged from the invoice date looks older than one aged from the due date on the same ledger, so a reader confirms the basis before comparing it with an earlier report or a facility's eligibility test.
How often should an aged debtors report be run?
Most businesses produce it at least monthly, at month-end alongside the management accounts, and credit controllers usually work from it weekly. A lender with an overdraft may ask for it monthly or quarterly. A financier advancing against the ledger usually wants it at each borrowing base date, and may have direct access to the sales ledger. The frequency is set by the facility agreement, and comparing consecutive reports is where the value lies.
What does a high balance over 90 days mean?
It may mean a customer in difficulty, a dispute about goods or an invoice raised in error, or simply a long-standing retention. It rarely means the money will arrive in the usual way. A lender asks for the reason, whether the balance has been provided for, and whether the same customer is still being supplied, because further sales to a customer who is not paying add to the exposure and flatter the sales line at the same time.

// NEXT TO IT

// ON WHOSE DESK

The seats that read this term in an ordinary week. Each page says what the seat is for, who arrives in it, and the shape of the round it runs.

  • Transaction bankerSells and structures the plumbing a business runs on — accounts, payments, collections, liquidity and trade finance.
  • Credit analystReads a borrower and writes the recommendation a decision-maker will act on.
  • Business relationship managerCarries a book of trading businesses — wins them, keeps them, and is the bank's voice when the answer is no.

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