Calculate days sales outstanding from receivables and credit sales.
Please do not make financial decisions based on these results.
What is the DSO Calculator?
Calculate days sales outstanding from receivables and credit sales. To use the DSO Calculator, enter accounts receivable, credit sales, days in period; it returns dso, and shows them instantly as you type.
From revenue to cash flow
Work down the income statement: gross margin, operating margin, EBITDA and net margin. Then confirm profit is real cash with the free cash flow calculator and the accrual ratio.
Efficiency ratios show how fast money turns. The Cash Conversion Cycle Calculator combines DSO, DIO and DPO into one number of days.
- Costs. Marginal cost, average variable cost and the optimal price tools support pricing decisions.
- Elasticity. Price, cross-price and income elasticity show how demand reacts.
How to use the DSO Calculator
- Enter your numbers. The inputs are Accounts receivable ($), Credit sales ($), Days in period. Use numbers from the same accounting period so the ratios are comparable. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the DSO. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the DSO Calculator using the default values shown in the calculator above:
Inputs
| Accounts receivable ($) | 240,000 |
|---|---|
| Credit sales ($) | 2,000,000 |
| Days in period | 365 |
Results
| DSO | 43.8 days |
|---|
With these inputs the calculator returns DSO: 43.8 days. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Accounts receivable ($) from 240,000 to 288,000 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| DSO | 43.8 days | 52.6 days | +20% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
How can I reduce DSO?
Tighten credit terms, bill faster and chase late invoices.
What is the difference between EBIT and EBITDA?
EBITDA also adds back depreciation and amortization, so it approximates operating cash profit.
Which accounting standard do the formulas follow?
They use the common textbook definitions that apply under both US GAAP and IFRS unless a tool says otherwise.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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