The corporate tax rate is a graduated system from 18% to 30% and books are required. This particular provision is criticised for two reasons: i) it creates a system where micro- and small enterprises accept the practice of not keeping books, and ii) the progressively higher taxation rate for corporate enterprises is a disincentive for natural person enterprises to become incorporated. The unintended effect of these rules may be to actually discourage the growth of micro- and small enterprises by providing incentives for them to remain small, as mentioned in Chapter 2.