New Regime Slabs · FY 2026-27 / AY 2027-28 · Updated August 2026

Advance Tax Calculator

Advance tax is income tax paid in quarterly instalments during the financial year — 15 June, 15 September, 15 December and 15 March — rather than as a single payment after year-end, wherever the estimated tax liability exceeds ₹10,000.

Quarterly advance tax instalments with exact due dates, Section 234B and 234C interest calculation. The CA working paper your clients need.

Income & Tax Details

Financial Year

Estimated Income (Annual)

Salary / Pension (₹)

₹

Business / Professional Income (₹)

₹

Net profit after allowable expenses

Equity LTCG taxable — Sec 112A (₹)

₹

Gains above ₹1.25L exemption, taxed at 12.5%. 87A rebate NOT applicable on this.

Equity STCG — Sec 111A (₹)

₹

Short-term equity gains (STT paid), taxed at 20%. 87A rebate NOT applicable on this.

Other Capital Gains at slab rate (₹)

₹

Property STCG, gold STCG, debt MF gains — added to slab income

Other Income (Interest, Rent, etc.) (₹)

₹

Deductions & TDS

Total Deductions (80C + 80D + HRA + Others) (₹)

₹

New Regime: Standard Deduction ₹75,000 (salaried) is available — include it here. 80C/80D/HRA are NOT deductible under new regime.

TDS Already Deducted (₹)

₹

From salary TDS, Form 16, 26AS / AIS

Advance Tax Paid (₹)

1st Instalment — by 15 Jun

₹

2nd Instalment — by 15 Sep

₹

3rd Instalment — by 15 Dec

₹

4th Instalment — by 15 Mar

₹

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Enter your estimated income and advance tax paid to see quarterly instalments, shortfalls and Section 234B/234C interest.

Quarterly Instalment Schedule

Instalment	Due Date	Cumulative Due (₹)	Paid (₹)	Shortfall (₹)	234C Interest (₹)	Status

Frequently Asked Questions — Advance Tax

What is advance tax?

Advance tax is income tax paid in quarterly instalments during the financial year, rather than as one lump sum after year-end, wherever the estimated tax liability for the year exceeds ₹10,000.

What happens if I don't pay advance tax on time?

Late or short payment of advance tax attracts interest under Section 234B (for shortfall in total advance tax paid) and Section 234C (for deferment of individual instalments), each charged at 1% per month on the shortfall.