Hi @sann,
Tax on trading income depends on the type of trading you engage in. For delivery-based trades, the income is classified as capital gains.
Here’s a detailed read on how capital gains from stocks will be taxed.
Moreover, for intraday or F&O trading which is treated as business income, tax is applicable at a slab rate which can go up to 30% if you fall in the highest tax slab.
Here’s a thread where this has been discussed in detail: How are profits from intraday and F&O trading taxed?
Hope this helps!