Installment Merchant Fee
Formula: Commission = Sales × Rate% | Actual Revenue = Sales − Commission
Store Installment Fees Calculator
The Store Installment Fees Calculator estimates a loan and interest estimate for your scenario from the quantities, rates, period, units and other assumptions requested on the page. Replace the example values with your own store installment figures and recalculate after changing an assumption. Use it to compare scenarios, then verify any current rate or fee before acting.
Enter sales, installment number and payment rate 0% to see the actual cost for the store.
Formulas used
- Commission = Sales × (Rate % ÷ 100)
- Actual revenue = sales - commissions.
- Net profit = (sales x margin%) − commission
Related Links
Official reference source
- Bank of Thailand (bot. or. th) - Interest rates and credit.
- Consumer Credit Rights — Bank of Thailand
Frequently asked questions
How much does a 0% shop charge?
What about the shop repayment fee?
Should we take a 0% loan?
English calculator guide
How to use the Store Installment Fees Calculator
Use this page to test a specific store installment scenario. Enter your own values in the calculator above, review the units beside each field, and recalculate after changing an assumption. The result updates the store installment fees estimate instead of relying on a generic example.
- Build a baseline store installment case with figures that match your situation.
- Run a second store installment case after changing the rate, period, quantity or other key assumption.
- Record the difference between the two store installment results and the input responsible for it.
Inputs for the store installment estimate
For this store installment calculation, check the quantities, rates, period, units and other assumptions requested on the page. The result is designed to show a loan and interest estimate for your scenario, not a guaranteed provider price or official decision.
How the store installment result is calculated
The calculator models principal, interest, repayment timing and term using the assumptions shown on the page. Reusing the same store installment inputs will produce the same estimate, which makes the page suitable for controlled scenario comparisons.
Checks for a store installment decision
Confirm any current rate, threshold or provider rule that could change the final amount. For store installment, Use the estimate to compare card or payment costs. Check the provider’s current percentage fee, fixed fee, interest method, minimum charge and billing terms. Check the important inputs and any current provider or authority rules before using the result for a decision.
- Language QA
- Terminology, numeric values and calculator controls checked
- Calculator scope
- Loan and interest
- Last English review
- 26 July 2026