Zakat on shares depends on intent. Trading-basis holdings are treated like inventory (2.5% of market value). Long-hold investments are zakatable on the zakatable-asset portion of the underlying company.
How to compute Zakat on stocks
1
Classify the holding
Trading (frequent flips) vs. Long-hold (dividend or capital-growth).
2
For trading
Take 2.5% of the market value on the Hawl day.
3
For long-hold
Take 2.5% of the zakatable-asset portion (cash + receivables + inventory).
Frequently asked
How do I compute Zakat on long-hold shares?
Look up the company's current-assets ratio (cash + receivables + inventory / total assets) from its latest annual report and apply 2.5% to that fraction of the market value.
What about dividends?
Dividends are cash — combined with your savings when the Hawl anniversary arrives.