New vs Old Tax Regime FY 2026-27: The Break-Even Deduction, Income by Income
Every ITR season the same question returns: should I stay on the old regime or move to the new one? The honest answer is a number — the amount of valid deductions you must actually claim before the old regime becomes cheaper than the new default. We ran that break-even calculation across nine salary levels for a resident salaried individual below 60. Here is the full picture.
Break-even deduction by salary level
"Break-even deduction" = the total deductions beyond the standard deduction (80C, 80D, HRA, Section 24(b) home-loan interest, NPS, etc. combined) that the old regime needs before its final tax stops being higher than the new regime's.
| Gross salary | New-regime tax | Old-regime tax (zero deductions) | Break-even deduction needed | As % of salary |
|---|---|---|---|---|
| ₹5,00,000 | ₹0 | ₹0 | New wins by default | — |
| ₹7,50,000 | ₹0 | ₹54,600 | ₹2,00,000 | 27% |
| ₹10,00,000 | ₹0 | ₹1,06,600 | ₹4,50,000 | 45% |
| ₹12,75,000 peak | ₹0 | ₹1,87,200 | ₹7,25,000 | 57% |
| ₹15,00,000 | ₹97,500 | ₹2,57,400 | ₹5,44,000 | 36% |
| ₹20,00,000 | ₹1,92,400 | ₹4,13,400 | ₹7,09,000 | 35% |
| ₹25,00,000 | ₹3,19,800 | ₹5,69,400 | ₹8,00,000 | 32% |
| ₹30,00,000 | ₹4,75,800 | ₹7,25,400 | ₹8,00,000 | 27% |
| ₹50,00,000 | ₹10,99,800 | ₹13,49,400 | ₹8,00,000 | 16% |
The break-even, visualised
Deduction required (₹) for the old regime to match the new regime, by salary:
Three things the numbers reveal
1. The ₹12.75 lakh wall. Because the new regime pairs a ₹75,000 standard deduction with the enhanced Section 87A rebate, salaries up to ₹12.75 lakh pay zero tax. To match zero, the old regime must push taxable income under ₹5 lakh — needing up to ₹7.25 lakh of deductions, which almost no salaried taxpayer legitimately has.
2. Break-even is hardest exactly at ₹12.75 lakh, not at higher incomes. Above ₹15 lakh the new regime starts charging real tax, so the old regime no longer has to reach zero — it only has to beat a positive number. That is why the required deduction falls from 57% to 36% of salary as you cross ₹15 lakh.
3. For ₹25 lakh–₹50 lakh earners, the target flattens near ₹8 lakh. In this band the gap between the two regimes stays close to ₹2.5 lakh, so roughly ₹8 lakh of stacked deductions (max HRA in a metro + ₹2 lakh home-loan interest + ₹1.5 lakh 80C + ₹50k NPS + 80D) is what it takes. Reachable, but only for the fully-optimised.
Methodology
Figures assume a resident salaried individual below age 60 with only ordinary slab-rate income (no capital gains, surcharge cases above ₹50 lakh, or business income). Each figure applies the FY 2026-27 slabs, the applicable standard deduction, Section 87A rebate, new-regime marginal relief just above ₹12 lakh, and 4% Health & Education Cess. Tax is rounded to the nearest ₹10.
Slabs used — New regime: nil to ₹4L; 5% ₹4–8L; 10% ₹8–12L; 15% ₹12–16L; 20% ₹16–20L; 25% ₹20–24L; 30% above ₹24L (standard deduction ₹75,000; 87A up to ₹60,000 for income ≤ ₹12L). Old regime (below 60): nil to ₹2.5L; 5% ₹2.5–5L; 20% ₹5–10L; 30% above ₹10L (standard deduction ₹50,000; 87A up to ₹12,500 for income ≤ ₹5L).
Official references
• Income Tax Department — Individual tax computation and regime slabs
• Budget 2026 FAQs — rebate and marginal-relief examples
This analysis is an educational estimate, not tax advice. Individual results depend on documentation, income classification, and law in force. Verify your final computation before filing.
