Fixed assets falling under categories 1 and 2 must be retained at least to the end of their useful life. Land, buildings, and assets falling under categories 3 and 4 must be retained for at least 10 years after the revaluation date. Additional final income tax at a rate of 10% is imposed on the original revaluation gains if the revalued assets are sold or transferred before the end of this minimum retention period .This does not apply to: