DSO Calculator Days sales outstanding. Accounts receivable ($) Annual revenue ($) DSO (days) 29.2 Step-by-step with your numbers: 1. Values used: 2. Accounts receivable = 80,000 $ 3. Annual revenue = 1,000,000 $ 4. DSO = 29.2days Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! Days to collect payment. FAQ Good DSO? Under 45 days for most. Related calculators DIO Calculator Days inventory outstanding. DPO Calculator Days payable outstanding. A/R Days Calculator Days sales outstanding (DSO).