400 is the example result. Read it using the units and relationship stated below.
Payment Gateway Cost Comparison uses monthly processing volume, gateway a fee (%), gateway b fee (%).
Keeping timing visible in cash decisions
For payment gateway cost comparison, the relationship is Result = [Monthly processing volume] × ([Gateway A fee (%)] − [Gateway B fee (%)]) ÷ 100. The amount depends on the supplied monthly processing volume, gateway a fee (%), rather than a live market price or a value imported from another record. Profit does not state when money reaches the bank. Receivables, supplier payments and inventory can absorb cash while sales remain healthy. A cash comparison needs the payment window and outstanding balance, not only the invoice total.
What the model includes
Result = [Monthly processing volume] × ([Gateway A fee (%)] − [Gateway B fee (%)]) ÷ 100 Record whether amounts include tax, credit notes or disputed balances. Where a model converts annual flows into days, keep the balance and flow definitions consistent. Supplier terms and collection delays may move independently. Use the result to identify the next collection or payment question. A financing decision also needs contractual fees, settlement timing and repayment terms that may sit outside this model.
Example with the supplied inputs
Monthly processing volume: 100000; Gateway A fee (%): 2.9; Gateway B fee (%): 2.5. Result: 400. The values are illustrative.
Compare one changed input
Monthly processing volume changes from 100000 to 110000. The result becomes 440. All other inputs remain fixed.
Calculation rule
Result = [Monthly processing volume] × ([Gateway A fee (%)] − [Gateway B fee (%)]) ÷ 100
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Monthly processing volume | 100000 | Measure monthly processing volume in the displayed unit. Convert the source measurement before entry if it uses another system; a changed label does not perform a unit conversion. |
| Gateway A fee (%) | 2.9 | Enter gateway a fee (%) on the percentage scale used in the formula (20 means 20%, not 0.20). Keep its base and reporting period consistent with the other inputs. |
| Gateway B fee (%) | 2.5 | Enter gateway b fee (%) on the percentage scale used in the formula (20 means 20%, not 0.20). Keep its base and reporting period consistent with the other inputs. |
Output: 400 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 Monthly processing volume, Gateway A fee (%), Gateway B fee (%). 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 Monthly processing volume 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 400.
Change Monthly processing volume from 100000 to 110000 while keeping every other value fixed. The result becomes 440. 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