How much advance tax is due by 15 June on a ₹1 lakh liability?

For a ₹1,00,000 total tax liability, the advance tax due by 15 June is about ₹15,000 (15% of the total).

What is advance tax?

If your total tax liability for the year exceeds ₹10,000, you must pay advance tax in instalments: 15% by 15 June, 45% (cumulative) by 15 September, 75% (cumulative) by 15 December, and 100% by 15 March, to avoid interest under Sections 234B and 234C.