DSO & Finance: How to Optimize Payment Terms?

Understanding the DSO and Its Implications for Cash Flow

DSO (Days Sales Outstanding) measures the average time it takes for customers to pay. The higher this metric rises, the tighter the company’s cash flow becomes. In France, the average DSO stands at 44 days, according to the 2025 Payment Terms Observatory. This figure masks significant disparities across sectors and company sizes.

A high DSO directly impacts a company’s ability to pay suppliers, make investments, or hire new employees. It is therefore essential to monitor this metric in real time and implement solutions for the financier quickly, without increasing debt or risking damage to customer relationships.

Here are the main risks associated with a poorly managed DSO:

• Increase in working capital requirements (WCR)
• Risk of supplier default
• Cash flow pressures and a drag on growth
• Downgrade of credit rating and difficulty obtaining credit

Conversely, optimizing and financing DSO can free up financial flexibility, ensure timely payments, andenable investment in operationalgrowth. But how can this be achieved? And how can DSO financing be integrated into the company’s overall management?

Why Finance Your DSO: Strategic and Operational Considerations

DSO financing isn't just for struggling companies. Even financially sound companies need to anticipate the timing mismatch between cash inflows and outflows to avoid negatively impacting their cash flow.

Let’s take the example of an SME in the construction industry: it generates annual revenue of €4 million, with an average DSO of 60 days. This means that at any given time, nearly €650,000 in receivables is tied up awaiting payment. If the company does not finance this DSO, it risks postponing or canceling strategic investments.

Conversely, an e-commerce company with a low DSO (less than 10 days thanks to payment upon order) enjoys greater cash flow flexibility, which allows it to accelerate its business growth or negotiate better purchasing terms with its suppliers.

DSO financing is therefore part of a working capital management strategy that complements other cash management tools. The goal is to find the solution that best fits the company’s operating cycle, its risk profile, and its growth objectives.

The Best Solutions for Financing DSO

There are several solutions available for financing DSO in a flexible and efficient manner. The choice depends on the company’s profile, its short-term financing needs, and the structure of its accounts receivable.

1. Factoring: A Long-Standing Tool for Financing DSO

Factoring, with its advantages and disadvantages compared to a bank loan, remains the most widely used solution for quickly converting accounts receivable into cash. In practice, the company sells its invoices to a factor, which immediately advances all or part of the amount. This solution is particularly suitable for companies with large corporate clients or long payment terms. Factoring also allows companies to outsource accounts receivable management and collections, which is an advantage during periods of rapid growth.

ℹ️ Real-world example: An industrial company with €10 million in revenue and a DSO of 50 days opts for factoring. It receives immediate financing of up to 90% of the amount of its invoices.
According to the French Factoring Federation, this type of solution helped finance more than €400 billion in receivables in France in 2024.

2. Cash advances and short-term credit

Some banks and fintech companies offer specialized working capital advances to finance DSO, in the form of short-term credit lines. Eligibility for these solutions is often based on receivables collateral or customer credit scoring. They offer great flexibility, particularly for seasonal businesses, to funding growth, inventory, or even fund research and development.

Discover and compare the best short-term financing solutionstailored to your business needs.

3. Innovative digital financing solutions

Specialized platforms now offer digital solutions that provide instant financing for accounts receivable, with no paperwork or red tape. Automated invoice analysis, integration with accounting software, and quick turnaround times are attracting more and more business leaders.

These solutions are ideal for tech and e-commerce SMEs, where responsiveness and flexibility are crucial to supporting growth. Open banking also plays a key role in streamlining working capital financing, allowing you to view your company’s financial status in read-only mode after submitting your various banking documents.

4. Financing based on inventory volume

This solution provides financing backed by the value of fixed inventory, which can effectively help reduce the need to finance accounts receivable by freeing up cash flow. This financing is also known as "inventory pledge."

5. Adjust your financing strategy to align with your operating cycle

Every company has an unique operating cycle : certain sectors (construction, manufacturing, service agencies) have structurally high DSOs, while others benefit from payment upon order. It is therefore essential to thoroughly analyze your cash conversion cycle to choose the most suitable solution. Certain key KPIs should be monitored regularly.

Key metrics to monitor

Financing your DSO involves more than just securing a loan or factoring your invoices. It requires careful management based on key performance indicators that every finance department must monitor closely. Here are the key KPIs to watch:

• DSO (Days Sales Outstanding): average customer payment period
• Delinquency rate: percentage of uncollected receivables
• Working Capital Requirement (WCR): the amount needed to finance operations
• Accounts receivable turnover ratio: speed of customer collections
• Average accounts receivable: the average value of outstanding receivables

These KPIs should be analyzed in conjunction with seasonal trends, customer profiles, and sales structure. It is better to anticipate your DSO rather than react to it, especially during periods of strong growth or when there is a change in the customer portfolio.

ℹ️ In 2024, an SME in the B2B services sector saw its revenue grow by 30%, driven primarily by new contracts with 60-day payment terms. The DSO quickly rose from 38 to 58 days, putting pressure on the company’s cash flow. By implementing a one-time factoring program combined with a short-term credit line, the SME was able to reduce its DSO to an average of 22 days, while financing the hiring of three new employees. The result: a controlled operating cycle and sustainable growth, without excessive risk-taking or capital dilution.

This type of example shows that it is possible to turn DSO financing into a real catalyst for growth, provided that the right tools are chosen and the strategy is adapted in real time.

Karmen Factor: Funding the DSO Without Affecting Customer Relationships

We launched Karmen Factor to enable businesses to quickly finance their invoices and thereby reduce their DSO, without having to sell or transfer their customer relationships. This invoice-based credit line solution is designed for B2B companies looking to optimize their cash flow in a simple, flexible, and fast way.

Karmen Factor helps free up cash flow by instantly financing issued invoices—without notifying your customers and without transferring debt. You manage the collections, and we advance the funds: a solution tailored to the realities of your business. This innovative approach has already won over many small and medium-sized businesses seeking to stabilize their cash flow without increasing their debt.

Conclusion

Ultimately, managing your DSO involves accurately forecasting and controlling your cash flow needs, taking into account actual payment due dates, outstanding receivables, accounts payable, and the company’s overall financial structure. Mastering this lever means financing your growth needs or the replacement of fixed assets.

When faced with a one-time or recurring need for financing, every business must weigh the various options available—such as factoring, discounting, short-term loans, and inventory pledges—to ensure the soundness of its financial projections and the long-term viability of its operations.