As an illustrative example let’s say I made an initial lump-sum investment of say £2000 that I had already paid Khums on. I now invest a fixed amount per month into the stock market (for e.g., lets say £100 per month) so at the end of the Khums year I have invested a further £1200 into the stock market. So total investment is £3200 (£2000 has Khums paid on it & £1200 does not have Khums paid yet) - the Market Value of the total could be higher or lower than the total investment. Do I pay Khums on the amount I invested per month? Or do I pay Khums on the market value of my investment that is above £2000 on my khums date? What would be the best way to approach this? I hope my query makes sense!