Costa Coffee does not qualify as an official halal restaurant, although its menu includes options that adhere to Islamic dietary laws. As the company is not certified as such, those following strict Islamic diet guidelines should still use discretion when dining at Costa Coffee as it may not ensure safety for them and their guests.

While Costa Coffee generally offers halal beverages, their food products may contain ingredients considered non-halal. Some products may include alcohol or animal-derived gelatin from pork (not to be used when ordering coffees and teas). Some pastries also contain lard that is non-halal.

Costa Coffee relies heavily on their JAKIM Halal Certificate as it ensures all their food and beverage preparation meets Islamic law. Furthermore, its international recognition makes expanding operations to countries with larger Muslim populations much simpler. Furthermore, maintaining their JAKIM Halal Certification is integral to maintaining its good reputation with Muslim customers as non-compliance could result in backlash and boycotts from them.