This article addresses the importance of grammar competence in translation studies. It aims to identify and describe the needs and problems of students in grammatical competence. By using a combination of quantitative and qualitative-descriptive research, the data cover grammar competence including thirteen elements: parts of speech, sentence elements, sentence patterns, verb tenses, subject verb agreements, sentence varieties, sentence forms, conjunctions and prepositions, sentence faults, collocations, mechanics, and paragraph developments. They were collected through questionnaires filled out by students in the English for Business and Professional Study program Politeknik Negeri Jakarta. The results show students ‘perception of their grammatical competence is quite high, meanwhile, they still encounter problems with some elements such as sentence patterns and elements. The students’ improvement in grammatical competence should be supported by several efforts from other stakeholders.