Four kinds of founder income
Money from your own company usually arrives in one of four ways. The tax depends on which way it is.
Fixed monthly pay. The company deducts TDS before it pays you.
Tax: Slab rates. How you split basic pay and HRA changes the HRA deduction. The HRA page has the metro rule.
Stock options. Taxed when you exercise them, and again when you sell the shares.
Tax: Perquisite (slab) + CG (20% / slab / 12.5%). If you can choose the year, exercise when your other income is lower. The windows are in the next section, and on the ESOP deferral page.
Profit the company pays out to shareholders. TDS is 10% when the dividend is above ₹10,000.
Tax: Slab rates. If the company is loss-making, reinvest the money instead of taking a dividend.
Profit from selling shares. Unlisted shares: 24 months to count as long-term. Listed shares: 12 months.
Tax: 12.5% LTCG. Listed STCG is 20%. Unlisted STCG is at slab rates. Section 54GB can cover long-term gains from a house that you put into startup shares.