Debtor Days Calculator
How long customers take to pay.
Enter your values
ⓘ Live results
Results
- Debtor days (DSO)
- 18.4 days
- Against terms
- Within terms
- Daily sales
- $4,666.67
- Cash freed if on terms
- $0.00
Quick answer
Debtor days show the average time between invoicing and getting paid.
DSO = receivables ÷ revenue × days
How to use the Debtor Days Calculator
- 1Enter the receivables balance.
- 2Enter revenue over the same period.
- 3Enter your standard payment terms.
Worked example
Using the values the calculator loads with:
Inputs
- Accounts receivable86000 $
- Revenue in period420000 $
- Days in period90
- Payment terms30 days
Results
- Debtor days (DSO)18.4 days
- Against termsWithin terms
- Daily sales$4,666.67
- Cash freed if on terms$0.00
Frequently asked questions
How do I reduce DSO?
Invoice immediately, chase at day 7 and offer card payment.
Is 45 days bad?
It is common in B2B but ties up a month and a half of sales.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.