What is DSO (Days Sales Outstanding) and how is it measured?
DSO (Days Sales Outstanding) measures the average number of days a company takes to collect payment after a sale. It is a key accounts receivable metric. DSO is calculated as (accounts receivable / total credit sales) multiplied by the number of days in the period. High DSO indicates slow collections; low DSO indicates efficient receivables management. E-invoicing and automated billing can reduce DSO by accelerating invoice delivery and reducing disputes.
How can e-invoicing reduce DSO?
E-invoicing reduces DSO by: (1) Faster invoice delivery: e-invoices arrive instantly vs. 3-5 days for postal invoices; (2) Reduced disputes: structured format and validation reduce invoice errors that cause payment delays; (3) Earlier payment clock start: payment terms run from invoice date; faster delivery means earlier due date in practical terms; (4) Automated payment matching: buyers can automate receipt and processing, removing manual delays; (5) Early payment incentives: dynamic discounting platforms attached to e-invoicing AP workflows enable early payment programs.
Frequently Asked Questions
- What is a good DSO for a B2B business?
- A good DSO depends heavily on industry and payment terms. As a rule of thumb, DSO should be no more than one-third higher than the stated payment terms. For a business with 30-day terms, a DSO below 40 days is generally acceptable; above 50 days indicates collection problems. Industry benchmarks vary: manufacturing typically targets 40-50 days, professional services 45-60 days, distribution 35-45 days.
- How does invoice quality affect DSO?
- Invoice quality directly affects DSO because disputed invoices delay payment. Common invoice errors that increase DSO include: wrong purchase order number, incorrect quantities or prices versus the PO, missing or incorrect VAT number, wrong entity name or address, and missing delivery references. Automated invoice validation against PO data before issuance, and structured e-invoice delivery, reduce the error rate and the percentage of invoices that enter a dispute process.
Related Concepts
- What is the accounts receivable cycle and how does e-invoicing accelerate it?
- What is DPO (Days Payable Outstanding) and how does it relate to invoice management?
- What is invoice financing and what are the main types?
- What is cost per invoice and how is it benchmarked?
- What is invoice discounting and how does it differ from factoring?