There are actually some differences between General English courses and Business English courses, in terms of level requirements, content and usage.
General English courses and business English courses
1. The difference in level requirements
Regarding the levels, general English is available in all levels, from A1 to C1.4. Business English, however, is available for intermediate learners, at B1+.
2. Differences in content
Business English courses focus on the language of the economy, the workplace, and your career.
Some examples of Business English lessons are 'Speaking in a Meeting', 'Negotiating', 'Talking on the Phone' and much more.
General English courses cover all areas of English, for all situations, without a major in any field. Both courses focus on communication, giving you real practice of the English language. Both will develop speaking, listening, grammar and reading skills.
3. Which one do you need?