About
Maximum is the credit card programme of Türkiye İş Bankası (İşbank), launched in 2001. It works as a Visa, Mastercard or Troy credit card with instalments built in: at Maximum member merchants the shopper can split a purchase into monthly instalments, and later add 2 to 16 extra monthly instalments in the Maximum Mobile or İşCep app, with contractual interest charged. Purchases also earn MaxiPuan reward points. The instalment network covers merchants in Turkey, although the card itself can also be used abroad. As of June 2026, İşbank reported 11.5 million Maximum customers and over 440,000 member merchants.
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