Every week a commercial invoice goes uncollected, two things degrade at once: the probability of payment and the intelligence required to compel it. Industry data places a well-managed account above 90 percent collectability inside the first 30 days past due, near 50 percent by 90 days, and below 20 percent past 180. One agency''s measurement of its own book put a placed account at 87 percent of face value at 90 days and 33 percent at 120 — a two-thirds fall in a single month. Delay is not a holding pattern. It is a cost, paid in collectability and in the quality of the case you will eventually need to make.
You know the account we mean. It has been past due long enough that chasing it feels routine and escalating it feels premature, and so it sits — not forgotten, but not advancing. You are not certain whether the window has closed or whether a little more patience will resolve it without friction. This briefing sets out what the delay is actually costing: the collectability curve by account age, the point at which internal effort stops paying, and the intelligence that quietly decays while the file waits. The last of these is the one that does not appear on any aging report.
What is the collectability rate by age of debt?
Collectability falls as the account ages, and the decline is not linear — it steepens. The figures below are the consolidated industry pattern for commercial accounts.
| Account age past due | Approx. collectability |
|---|---|
| 1–30 days | 90% and above |
| 31–60 days | 75–85% |
| 61–90 days | 50–70% |
| 91–120 days | 30–50% |
| 180 days or more | Below 20% |
The shape of that curve is the entire argument. The expensive ground is not the first month — it is the passage from 90 days to 120, where as much as a third of the account''s value can disappear into the gap. An invoice held "just one more month" at that stage is not being protected. It is being discounted.
When is the best time to escalate an unpaid invoice?
Between 60 and 90 days past due, for most commercial accounts. This is the window after internal reminders have demonstrably failed but before collectability drops below the halfway mark. Placing earlier risks straining a customer over an administrative oversight; placing later forfeits the most collectable months of the account. The operative signal is behavioural, not calendrical: when a debtor stops responding, breaks a payment commitment, or goes quiet after a clear notice, the account has told you what it is. Waiting past that point does not gather more information. It only ages the file.
What does delay actually cost beyond the lower collectability?
This is the part the aging report does not show. As an account ages, the intelligence needed to collect it degrades in parallel with the odds — and often faster.
- Traceability falls. Debtor contact data goes stale; responsible individuals change roles or leave; a substantial share of business and personal contact details turn over inside a year. The debtor you could have reached in week two becomes the debtor you must first locate in month six.
- Document integrity weakens. Proof of delivery, signed terms, correspondence trails — the evidentiary spine of a clean collection — scatters as staff turn over and systems are archived. A claim that was airtight at 30 days becomes a claim you must reconstruct at 180.
- Asset visibility narrows. A solvent debtor at 60 days can be a restructured, relocated, or asset-stripped one by month nine. The same delay that lowered your collectability gave the debtor time to arrange its affairs against exactly the action you are now contemplating.
Each of these is recoverable individually and corrosive in combination. A delayed account is not merely a less collectable account. It is a harder case, built on weaker evidence, against a better-prepared debtor. The fee a collection partner charges reflects that difficulty — which means the cost of delay is paid twice: once in collectability, and again in the price of the work your patience made necessary. Our commercial debt collection service is structured around exactly this window.
Is the collection fee worth it against writing the debt off?
For any account still inside the collectable range, yes. The realistic comparison is not the full sum against the fee; it is a collected invoice minus a contingency percentage against a written-off invoice minus all of it. There is a figure that settles the question and appears on no statement: a debt written off must be earned again from new business. At a 10 percent net margin, replacing a $50,000 write-off requires $500,000 in new sales. Against that, a contingency fee charged only on success is the lowest-risk return your finance function will see this quarter. The fee is not the cost. The delay is.
You have an account that is aging while you weigh whether to act, and the intelligence required to collect it is thinning at the same rate as the odds. We will assess where it stands — collectability, traceability, and the strength of the file — and tell you plainly whether the window is open or closing. Request a free review.