As a rule, it is subject to a special income tax rate of ten percent (10%) on their taxable income except on certain passive income. Notably, this is much lower than the regular corporate income tax rate of 30% of taxable net income. However, they must dedicate their operations to providing educational services because if they does not, then, they will cease to enjoy the benefit of 10%. If the gross income from unrelated trade, business or other activity exceeds fifty percent (50%) of the total gross income derived from all sources, they shall be taxed at 30% on the entire taxable income. 'Unrelated trade, business or other activity' means any trade, business or other activity, the conduct of which is not substantially related to the exercise or performance by such educational institution of its primary purpose or function.