• Subscribe to a PostFinance contract.
  • Provide to PayZen the contract information : merchant ID and PSP ID (Payment Service Provider, for example PayZen).


  • Needs a PostFinance account.
  • Needs a card number and the ID number of his PostFinance Card when he pay with card.
  • Needs the e-finance security elements for payment by PostFinance e-finance.
  • Have a Card reader or a Mobile ID when amount exceeds EUR 350.- or when using e-finance payment method.