METHOD & GUIDANCE
How this calculation works
Keep every input on the same time basis—for example, one month or one financial year—and do not mix cash figures with accrual figures. Tool IQ recalculates every output immediately; nothing you enter is saved or sent to us.
How to use the result
Compare DSO over consistent periods and against contractual payment terms, then quantify the cash that could be released by reaching a realistic target.
Worked example
The calculator averages opening and closing receivables, divides by credit sales and scales the result to the number of days in the period.
Common mistakes
- Including cash sales in the denominator.
- Using an end balance when the period is highly seasonal.
- Comparing a monthly balance with annual sales.
Frequently asked questions
Is the days sales outstanding calculator free?
Yes. It requires no account and stores no calculation inputs.
Can I use the answer for a formal filing?
No. It is a planning estimate, not accounting, tax, legal or investment advice. Confirm material decisions with a qualified professional.
Which period should I use?
Keep every input on the same basis—for example, one month or one financial year. Use current figures first, then save a cautious scenario for comparison.
Continue the decision
- Cash Runway Calculator — Estimate how many months your available cash will last.
- Revenue Growth Calculator — Measure growth and project a future revenue scenario.
Popular small-business decision paths
Method reviewed 5 August 2026. Figures are illustrative and calculated locally in your browser. Official sources are linked where a rule or obligation affects how the result should be used. Read the Tool IQ calculation standard for our checking process, limitations and corrections policy.