DSO Above 90 Days Is More Than a Finance Problem

Executive Summary

A CFO presents days sales outstanding (DSO) of 95 days. The CEO asks Finance to collect faster. Sales points to customer-agreed terms. Operations mentions delivery documents still awaiting approval. All three may be describing different parts of the same cash delay. The figure itself does not identify the cause.

DSO above 90 days deserves executive attention because receivables have accumulated relative to sales. The number does not tell management whether the underlying delay was agreed in the contract, imposed by a customer, created inside the business or caused by financial distress. Treating every case as a collections failure can send management after the wrong team.

Ninety days is a signal, not a universal limit

Days sales outstanding (DSO) expresses trade receivables as an estimated number of sales days. For internal analysis, one consistent approach is average billed trade receivables divided by comparable credit sales for the period, multiplied by the number of days in that period. Receivables and sales must be defined on consistent bases, including how VAT is treated. APQC’s published benchmark uses average gross accounts receivable and total gross annual sales, and excludes unbilled receivables. These are different measurement conventions; management should not compare results calculated on different bases. [1]

A customer that pays after 100 days against approved 120-day terms is behaving differently from one that pays after 100 days against 30-day terms. The first could be commercially acceptable but costly to fund; the second is substantially overdue. Either way, a 95-day company DSO does not mean every invoice is 95 days past due, nor does it prove default.

Mix also matters. DSO can change when large projects reach billing milestones, sales volumes shift sharply or more revenue moves to customers with longer contracted terms. And a conventional billed-receivables DSO calculation may miss time spent before an invoice can be raised, including work recorded as unbilled contract assets. For that reason, management needs DSO and a wider order-to-cash view, not DSO alone.

Where the cash delay is actually created

The trail normally starts before Collections. Sales may accept extended credit, weak billing milestones or customer-specific exceptions without making their funding cost visible. Operations may deliver the work but fail to secure a required goods-received note, certificate, quality sign-off or project approval. The invoice may then sit in a customer portal with a missing purchase-order reference or a disputed quantity.

Some balances really are collection or credit problems: an invoice was accepted and is now past due, customer payment promises repeatedly fail, or the customer’s financial position has weakened. Those cases require a different intervention from fixing invoice accuracy or contract documentation. APQC treats order-to-cash as a cross-functional process from order and credit approval through delivery, billing, disputes, payment and cash application. [2]

The distinction has consequences. A Finance-led reminder cannot resolve a site certificate Operations has not obtained. A Sales promise cannot substitute for a credit review. And an automatically generated invoice does not confirm that the customer has accepted it for payment.

Reconstruct the delay before assigning the owner

The useful starting point is a customer-and-invoice-level exception register, not another ageing total circulated by email. For each material balance, record approved terms, delivery date, when the contract permits billing, invoice date, customer receipt or acceptance, due date, payment status, dispute reason, amount at risk and the next accountable action.

Separate the elapsed time by cause. A delay before invoicing may involve delivery evidence, contract administration or billing. A valid invoice awaiting customer approval may face a process hold or a genuine dispute. Time after the agreed due date points more directly to collection discipline, credit risk or the customer’s ability to pay. These are different problems and need different owners.

Four tests make the register actionable:

· Compare actual payment behaviour with approved terms, not simply with a 90-day headline.

· Rank material balances by value, days past due, dispute status and customer concentration.

· Validate evidence of delivery and invoice receipt before escalating a customer for late payment.

· Separate disputed, unbilled, contractually retained and genuinely overdue amounts in management reporting.

These tests prevent the wrong remedy. Shortening future terms will not correct a recurring missing-document problem. More reminders will not recover a balance the customer legitimately contests. Conversely, a clear and accepted overdue invoice should not be allowed to circulate indefinitely between departments.

What fifteen days of DSO can mean for cash

Consider a hypothetical industrial supplier with SAR 146 million of annual credit sales and SAR 38 million of average billed trade receivables, measured on a consistent basis. Annual credit sales average SAR 400,000 per day. The resulting DSO is 95 days: SAR 38 million divided by SAR 146 million, multiplied by 365.

Suppose customer mix and sales remain comparable, and targeted process changes sustainably lower DSO from 95 to 80 days. The implied average receivables balance falls from SAR 38 million to roughly SAR 32 million. That is about SAR 6 million of working capital potentially released, not SAR 6 million of additional profit. Actual cash timing and the amount released still depend on sales patterns, customer receipts and the basis used to measure receivables.

Even if management finances the gap through receivables factoring, it still needs to understand what created the delay. PwC Middle East’s 2025 study noted greater use of factoring in Saudi Arabia and the UAE while warning that financing can mask inefficient collections processes. Its study of 2024 performance reported regional DSO falling from 83.9 to 81.1 days; that regional average is context, not a target automatically appropriate for every company. [3]

Payment delay is not the same as credit loss

Cash timing and collectability need separate judgments. A slow-paying customer may be contractually current; a short-term receivable may nevertheless carry genuine credit risk. Under IFRS 9, entities assess expected credit losses on trade receivables using the applicable impairment model. The simplified approach requires lifetime expected credit losses for trade receivables without a significant financing component, with historical experience adjusted for current and forward-looking information. [4]

The practical implication: do not equate a company-wide DSO above 90 with invoices more than 90 days overdue or automatically treat the whole balance as impaired. Finance should maintain a distinct credit-risk assessment, while commercial and operating owners resolve the exceptions that prevent otherwise collectible balances from converting into cash.

Why the Saudi and GCC operating context matters

Manufacturers, distributors and contractors may finance imported materials, inventory, payroll and site delivery well before customer receipts. Contract acceptance, milestone certification and customer procurement processes can make the receivable journey longer than the accounting entry suggests. Commercial leaders should therefore price and approve terms with their working-capital cost visible, not only the headline gross margin.

Saudi e-invoicing rules add a compliance checkpoint, but they do not complete the customer-to-cash process. ZATCA’s phased integration rules specify invoice formats, additional fields and platform connectivity for taxpayers in the relevant waves; its Wave 25 announcement was published in July 2026. [5] Compliant issuance does not establish that a customer has accepted an invoice for payment. Billing, IT and commercial teams should test both the statutory process and the customer’s approval requirements.

Put the signal into the 3Ms Business Operating System

In the 3Ms Business Operating System (BOS), the entry signal is the gap between contracted terms, expected receipts and actual cash. Cash and working-capital diagnosis identifies how much is tied up and where. Pricing tests whether credit concessions were commercially justified. Operations and customer-facing teams test delivery and documentation. Governance turns the confirmed cause into a named decision and escalation route.

The CFO owns the reconciled cash bridge and rolling 13-week receipts forecast. Sales owns agreed credit terms, commercial disputes and future deal discipline. Operations owns missing delivery evidence and handovers. Credit and Collections owns valid overdue invoices and monitors payment risk. The CEO or GM resolves cross-functional trade-offs and should appoint one accountable owner for the end-to-end customer-to-cash process, even while individual tasks remain with different teams.

The 13-week review should track promised versus actual receipts, newly overdue balances, unresolved disputes, invoice-acceptance delays and forecast liquidity headroom. Start by identifying the largest causes and assigning owners. Then close individual exceptions while fixing the repeated handoff failures behind them. At the end of the cycle, measure both cash recovered and whether new invoices are moving through the process faster. A one-off collection push is not lasting progress if fresh disputes continue to accumulate.

The decision to take to the next executive meeting

The executive discussion should establish how much of the reported delay reflects approved credit terms, how much is avoidable through better execution and how much signals payment risk. Each explanation calls for a different decision. The DSO headline alone cannot make that decision for management.

3Ms management judgment: a receivables problem becomes a management-system failure when the company can identify who owes the cash but cannot identify who owns the delay. Finance should measure the exposure. Leadership must make the handoffs work.

Next step: Review the 3Ms Business Operating System and trace one material customer balance from accepted order to cash receipt before the next management review.

Sources and references

[1] APQC — Days sales outstanding (methodology and exclusions)

[2] APQC — Measuring and improving order-to-cash and receivables performance

[3] PwC Middle East — 2025 Middle East Working Capital Study (29 September 2025)

[4] IFRS Foundation — IFRS 9 impairment post-implementation review, Section 5 (2023)

[5] ZATCA — Wave 25 Integration Phase announcement (24 July 2026)

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