7 Warning Signs of an Accounts Receivable Problem (and What to Do)

An SME can be profitable on paper and run out of cash the next day. Accounts receivable is often the culprit — but the signals arrive before the crisis, not during it. Here's how to spot them in time.

These indicators can each exist on their own, but their combination is almost always the sign of a structural problem. Watch them together, not in isolation.

+10 d

The DSO-vs-terms gap beyond which liquidity risk becomes significant (BDC)

50%

Recovery probability of a receivable over 90 days old (ACCA sector data)

20–35%

DSO reduction observed after reminder automation among Finaxis customers

The 7 signals to watch

1. DSO more than 10 days above your contractual terms

DSO (Days Sales Outstanding) is your baseline indicator. If your terms are Net 30 and your DSO is 45 days, your customers pay systematically late. That's not an accident — it's an established behavior. The Business Development Bank of Canada recommends not tolerating a gap of more than 7 to 10 days against your terms. Thresholds (Net 30): healthy under 37 days · watch 37–50 days · problem over 50 days.

2. Aging building up in the 60+ and 90+ day buckets

A healthy aging report is pyramid-shaped: most of the balance sits in the current bucket, with less and less in older ones. If your 60+ day bucket is more than 20% of the total, bad-debt risk is real. Beyond 90 days, sector statistics show fewer than one in two receivables is collected in full. Receivables over 60 days / total AR: healthy under 10% · watch 10–20% · problem over 20%.

3. Excessive concentration on one or two debtor customers

If a single customer makes up more than 25% of your total AR balance and is falling behind, your liquidity risk is dangerously concentrated. It's also a signal banks evaluate when reviewing credit lines: excessive concentration can limit your borrowing capacity even when your balance sheet is otherwise solid. Single-debtor concentration: healthy under 15% · watch 15–25% · problem over 25%.

4. Recurring disputes on the same invoices or customers

An isolated dispute is normal. Recurring disputes on the same customers or invoice categories often reveal an upstream problem: billing errors, poorly defined terms, or incomplete deliveries. These disputes block collection and artificially inflate your DSO. Treat repeated disputes as process signals, not just bad payers. Dispute rate (contested invoices / total): healthy under 2% · watch 2–5% · problem over 5%.

5. Manual follow-ups consuming more than 20% of team time

If your team spends a day a week chasing the same customers by phone or email, preparing aging reports by hand, or validating payments in QuickBooks or Acomba, the process is broken — not the people. An SME with entirely manual follow-ups sends on average half as many reminders as an automated business, and its customers know they can push payment back with no immediate consequence. Team time on AR follow-ups: healthy under 10% · watch 10–20% · problem over 20%.

6. Rising bad-debt write-off rate

If your bad-debt provisions rise from one period to the next, or you write off balances more often than before, late collection is no longer working. Under accrual accounting, these amounts hit expenses and directly reduce your profit — even though you had already booked them as revenue. Write-off rate (write-offs / revenue): healthy under 0.5% · watch 0.5–2% · problem over 2%.

7. Growing gap between net income and operating cash flow

This is the most commonly misread signal. You can show positive net income on the balance sheet and lack the cash to pay your suppliers. If your cash flow statement shows operating cash flow consistently below net income, your accounts receivable is probably the main cause: you're recording revenue you haven't collected yet. Operating cash flow / net income ratio: healthy over 0.9 · watch 0.7–0.9 · problem under 0.7.

Severity scale: how many signals do you have?

Manual vs automated: what actually changes

Here is what operational data from Quebec SMEs shows before and after deploying an AR automation platform.

What to do when you spot these signals

Step 1 · Measure first, act second

Before any corrective action, pull a full aging report from QuickBooks or Acomba and calculate your real DSO for the last 3 months. Compare it to your terms. If you can't access this data in under 30 minutes, that's already a signal.

Step 2 · Identify the 20% of customers causing 80% of the delays

In almost every SME, a small number of customers generate most of the problem receivables. Isolate them. For those customers, a direct conversation from your CFO or general manager is more effective than ten automated reminders.

Step 3 · Automate the process for the other 80%

For regular customers who pay late out of habit (not hardship), automating follow-ups is the fastest fix. A consistent, predictable reminder cadence changes payment behavior more effectively than a single well-written reminder. This is how the Finaxis platform works: reminders adapted to each customer, triggered automatically, with no team intervention.

Step 4 · Review your credit terms for new customers

If you spot recurring disputes or excessive concentration among new customers, it's often a sign your initial credit terms are poorly defined or insufficiently communicated. Build a simple credit check and explicit terms into your customer onboarding process.

Frequently Asked Questions