Subsequent Expenditure on Intangible Assets :

Subsequent expenditure on an intangible asset after its purchase or its completion should be recognised as an expense when it is incurred unless:

(a) it is probable that the expenditure will enable the asset to generate future economic benefits in excess of its originally assessed standard of performance; and

(b) the expenditure can be measured and attributed to the asset reliably.

If these conditions are met, the subsequent expenditure should be added to the cost of the intangible asset.

After initial recognition, an intangible asset should be carried at its cost less any accumulated amortisation and any accumulated impairment losses.