The case defines the relationship between the noun and the predicate in a sentence. Even though the genitive indicate a relationship between two nouns, it is also considered a case traditionally. The number of cases in a language may be set up on the basis of the different forms of the case markers and their different meanings. But, there is not always one to one correspondence between form and meaning. Whenever there is a discrepancy, the case is set up on the basis of distinct meaning. For example, the same case marker is used for both Accusative and Dative and another one for both INstrumental and Ablative. Since there are another one for both Instrumental and Ablative. Since there are four different meanings, four cases are set up. Following this procedure ten cases may be set up for Brokskat, viz., Agentive, Accusative, Dative, Benefactive, Locative, Sociative, Instrumental, Ablative, Genitive and Vocative. All the case markers except Benefative, Instrumental, Ablative and Sociative are bound forms and are suffixed to the noun except the vocative case marker which is prefixed one. The cases and their markers are given below:

The nominative case defines the subject. The case marker is added when the sentence has a transitive verb. The allomorphs of the nominative case markers are -i, -sa, and -ya. They are morphologically conditioned.