Deduction for know-how acquisition: lump-sum payments recoverable as business deductions over prescribed instalments. Deduction for lump-sum payments to acquire know-how used in the business is allowed by permitting a specified portion in the year of payment and the balance in equal instalments over the immediately succeeding years; accelerated instalment treatment applies where the know-how is developed in eligible laboratories, universities or institutions. On amalgamation or demerger, the transferee company can claim the remaining deduction to the same extent and for the residual period available to the transferor. 'Know-how' is defined to cover industrial information or techniques aiding manufacture, processing or mining operations.