A worked example: ₹50,000 dividend at a 30% marginal rate
A ₹50,000 dividend, taxed at a 30% marginal rate, owes ₹15,000 in tax — leaving a net dividend of ₹35,000 after tax.
The formula: dividend amount × marginal tax rate
A single multiplication, since dividend income is added to total income and taxed at whatever slab rate applies to that last portion of income — there's no separate flat dividend tax rate since the Dividend Distribution Tax was abolished in 2020.
Why "marginal tax rate" is the entire calculation
Everything in this formula hinges on correctly identifying the marginal rate — the rate applying to the last (highest) slab of taxable income, not an average rate across all income. Entering the wrong marginal rate produces a proportionally wrong tax estimate, even though the multiplication itself is simple.
TDS is a separate, earlier deduction
Companies typically deduct 10% TDS on dividends exceeding ₹5,000 in a financial year — this is adjusted against the final tax liability calculated here when filing a return, not a separate additional tax on top of the marginal-rate calculation.
Where the marginal rate figure should actually come from
Rather than assuming a round number like 30%, the real marginal rate is best found by checking how much additional tax an equivalent slice of income actually adds under the real income tax slab structure — a figure that can differ noticeably from a guessed flat percentage.