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Merchant Discount Rate (MDR) Calculator

Monthly MDR cost, tax on MDR and net settlement from your card sales.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: MDR is the percentage the acquiring bank keeps from each card sale. Enter your own agreed rate.

How to use it (step by step)

  1. 1Fill in the boxes: “Card sales”, “MDR (%)”, “Tax on MDR (%)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

MDR
Merchant Discount Rate: the percentage a shop pays the bank for every card sale.
Gross vs net
Gross = the full amount before deductions. Net = what is left after fees, taxes or deductions.
Percentage
A part out of 100. 25% of 200 = 50.

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