Solution - Standard TAB formula (par
30(1))
= (R100) + ((R700 – R100) × 10/30) = R300
The TAB cost is, therefore, R300 and the capital
gain on the disposal, using the TAB cost, will be
R400 (R700 – R300).
Test: Two-thirds of the profit relates to the post-
CGT period, ieR600 × 20/30 = R400.