50.00% is the example result. Read it using the units and relationship stated below.
Business ROI uses investment cost, value returned.
Comparing financial amounts on a defined basis
For business roi, the relationship is ROI (%) = (return − investment cost) ÷ investment cost × 100. The amount depends on the supplied investment cost, value returned, rather than a live market price or a value imported from another record. A financial model is useful when its cash amounts, rate convention and time horizon describe the same case. Interest, return and purchasing power are different outputs. A projection should remain separate from an observed or audited balance.
What the model includes
ROI (%) = (return − investment cost) ÷ investment cost × 100. Check whether a rate is annual, monthly, simple or compounded. Enter fees only where the form represents them and identify contractual charges that remain outside the estimate. A monthly payment alone does not establish affordability or total ownership cost. Use the result to prepare the next question about terms or assumptions. Tax treatment, lender conditions and valuation evidence require the relevant source documents; they cannot be recovered from a few numeric inputs.
Example with the supplied inputs
Investment cost: 20000; Value returned: 30000. Result: 50.00%. The values are illustrative.
Compare one changed input
Investment cost changes from 20000 to 22000. The result becomes 36.36%. All other inputs remain fixed.
Calculation rule
ROI (%) = (return − investment cost) ÷ investment cost × 100.
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Investment cost | 20000 | Use investment cost on the currency and period basis shown by the formula. Keep gross amounts, net amounts and unit amounts distinct; the page does not fetch a price or exchange rate. |
| Value returned | 30000 | Use the source quantity represented by value returned. Keep the counted population fixed and avoid mixing a unit value with a period total. |
Output: 50.00% is the example result. Read it using the units and relationship stated below. Use the formula to distinguish a cash amount, count, percentage or ratio.
How to use the page
Collect the inputs
Gather Investment cost, Value returned. Use one period and the units shown in the form.
Run the calculation
Enter the values and select the action. The calculation rule above explains how the inputs produce the result.
Compare a scenario
Change Investment cost on its own, keeping the other inputs fixed. Read both results before changing another assumption.
Worked example
With the example inputs listed above, the result is 50.00%.
Change Investment cost from 20000 to 22000 while keeping every other value fixed. The result becomes 36.36%. This comparison isolates that input; it does not forecast how other variables will respond.
Check the stated formula, units and limits before using the result in a decision.
Keep the displayed formula, input units and model scope with the result. Corrections or questions can be sent through the request section on this page.
Content updated: October 11, 2026