Zakat on shares
In one sentenceZakat on the company shares a person owns. It depends on intention: shares held for trading are zakated at market value, and long-term investment has a different ruling.
Simply put
If you bought the shares to sell them and profit from the price difference, they are trade goods: you pay Zakat on their market value on the Hawl day at 2.5%.
If you hold them for investment and their distributed dividends, many scholars hold that the Zakat the company pays on its base covers the shareholder. The matter has details, so refer to qualified scholars.
Worked example
An individual owns 200 shares bought for trading, their market price on the Hawl day is 60 SAR, and together with his other wealth he reaches the Nisab.
Market value200 × 60 = 12,000 SAR
Zakat 2.5%12,000 × 2.5%
Zakat on shares300 SAR
Don't confuse it with
Deductible investmentsZakat on shares is the individual's question about his shares, while deductible investments are the business's question about its investments in its base.