New regime vs old regime, step-by-step breakdown
| Income Range | Surcharge Rate | Applies On |
|---|---|---|
| Up to ₹50 lakh | NIL | No surcharge payable |
| ₹50L - ₹1 crore | 10% | 10% of income tax |
| ₹1 crore - ₹2 crore | 15% | 15% of income tax |
| ₹2 crore - ₹5 crore | 25% | 25% of income tax (both regimes) |
| Above ₹5 crore | 25% (new) / 37% (old) | New regime caps surcharge at 25%; old regime goes up to 37% |
| Due Date | Tax to be Paid | Cumulative % |
|---|---|---|
| 15 June 2026 | 15% of annual tax | 15% |
| 15 September 2026 | 30% of annual tax | 45% |
| 15 December 2026 | 30% of annual tax | 75% |
| 15 March 2027 | 25% of annual tax | 100% |
| Category | Due Date (AY 2027-28) |
|---|---|
| Salaried individuals | 31 July 2027 |
| Business / Profession (no audit) | 31 July 2027 |
| Business requiring audit | 31 October 2027 |
| Belated / revised return | 31 December 2027 |
This calculator computes income tax for FY 2026-27 under both new and old regimes simultaneously. The new regime offers lower slab rates with only ₹75,000 standard deduction. The old regime allows all deductions (80C, 80D, HRA, home loan etc.) but has higher slab rates. We compare both and clearly show which saves you more, along with a full waterfall breakdown of how the tax was computed.