Skip to main content
Katuq
Free tool
Updated · October 2026

Accounts Receivable & DSO Calculator

Days to collect, overdue receivables and their cost.

$
días
$
$
$
$
%

What you pay for a loan or what you stop earning

Days sales outstanding (DSO)
36 días

6 days above your terms

Overdue receivables
41,7 %

$ 20.000.000 of $ 48.000.000

Highest-risk receivables (more than 30 days overdue)
16,7 %
Capital tied up by collecting late
$ 8.000.000
Monthly cost of financing all receivables
$ 960.000
Monthly cost of the excess over your terms
$ 160.000
Credit sales per day
$ 1.333.333

Short answer:days sales outstanding (DSO) measure how long your customers take to pay you:receivables ÷ credit sales for the period × days in the period. If you give 30 days of credit and your DSO is 45, you have 15 days of sales stuck in receivables, which you are financing with your own cash.

The calculator also ages your receivables (current, 1 to 30, 31 to 60 and more than 60 days overdue) and estimates how much that idle money costs you at the financing rate you pay or forgo.

When to use this tool

  • When you sell on credit and feel cash isn't enough.
  • When reviewing which customers to give more or less credit.
  • Before applying for a working capital loan.
  • To measure whether your collection reminders work.

How to calculate days sales outstanding

  1. 1Enter your credit sales for the period and how many days it has (90 for a quarter).
  2. 2Enter the payment terms you give your customers.
  3. 3Split your current receivables by age: current and overdue by bracket.
  4. 4Enter your monthly financing rate and check the DSO, the overdue receivables and their cost.
This in Katuq

Invoice the same day and know who owes you

Every day the invoice is late is one more day to collect. In Katuq the DIAN electronic invoice is generated from the order itself, the customer can pay with a Wompi, ePayco or Bold link, and you see which orders are paid, pending or partly paid.

See Katuq Invoicing

Frequently asked questions

Want to automate all this?

Katuq integrates DIAN electronic invoicing, automatic barcode/QR generation for products, margin calculation, and much more in a single platform.