It doesn't matter where the employer/client is located. Income is taxed _where the work is performed_. If you work in Indonesia that's where your income will be

It doesn't matter where the employer/client is located. Income is taxed _where the work is performed_. If you work in Indonesia that's where your income will be taxed. "Business profits" are different, since they are generally regarded as dividends distributed to shareholders who (in theory) don't "do work" for the company.