Shift4 Payments FAQs: Where can I find my Merchant ID?


After you complete the initial sign up at you will be assigned a Merchant Account Number (i.e. MID). There are two primary locations for your MID

  • Log into your Shift4Shop admin portal and navigate to Settings >Payment; the MID will be in the lower left corner of the Payment Methods section
  • Reference prior emails from [email protected]

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