“Tax free” is deceptive, if it’s only referred to foreign sourced income. Income from any work is considered sourced where the work is performed, so this would only apply to foreign passive income (e.g. dividends or capital gains). And I’m not familiar with CFC-like rules in Indonesia but I guess they also apply some kind of economic substance requirement for a tax resident to own a company incorporated somewhere else and whose only purpose isn’t tax optimization.