Old Regime vs New Regime: Worked Examples Across Five Income Levels

Every article on the old-vs-new regime question eventually says "it depends on your deductions" -- true, but not very useful without seeing actual numbers. This article runs four realistic personas through this site's own Income Tax Calculator engine at five income levels each (₹8L, ₹12L, ₹18L, ₹25L and ₹50L annual gross salary), so instead of a vague rule of thumb you can see exactly where the old regime starts winning and by how much.

Every figure below was generated by calling the same calculation function that powers the Income Tax Calculator page -- not hand-computed or estimated for this article. If you change any assumption (metro vs non-metro city, actual rent paid, how much of your salary is Basic+DA), your own numbers will differ, which is exactly why the calculator exists as a companion to this article rather than a replacement for it.

The baseline: a salaried taxpayer who claims nothing beyond the standard deduction -- no 80C, no HRA exemption, no home loan. This is the cleanest illustration of the new regime's lower slab rates doing their job on their own, with nothing from the old regime's side to offset them.

The new regime wins at every single income level here, and the gap only widens as income rises -- from ₹65,000 at ₹8L up to ₹2,49,600 at ₹50L. If you genuinely claim no deductions at all, this table alone answers the question: the new regime is the better choice, full stop.

Now add the deductions most salaried taxpayers with old-regime investments actually claim: the full ₹1.5L Section 80C/123 limit (EPF + ELSS + life insurance combined), a ₹25,000 Section 80D health insurance premium for self and family, and the additional ₹50,000 NPS Section 80CCD(1B) deduction -- ₹2,25,000 in total, none of it available under the new regime.

The old regime's tax bill drops sharply at every level, but the new regime still wins everywhere -- the gap simply narrows, from ₹18,200 at ₹8L to ₹1,79,400 at the top end. ₹2.25L of deductions is meaningful, but on its own, at these income levels, it is not yet enough to flip the recommendation.

Same ₹2.25L as Scenario 2, plus ₹2,00,000 of self-occupied home loan interest under Section 24(b) -- the maximum allowed, and only under the old regime. Total old-regime-only deductions: ₹4,25,000.

The picture starts to shift. At ₹8L, both regimes now compute to ₹0 tax -- at this income, ₹4.25L of deductions pushes old-regime taxable income low enough that the Section 87A rebate wipes it out entirely, and the new regime's own rebate threshold (taxable income up to ₹12L) already does the same job without needing any deductions at all -- so the two are tied at zero, and it genuinely does not matter which you pick. At every income above that, the new regime still wins, but the gap has narrowed further still (down to ₹1,17,000 at the top two levels, from ₹1.79L in Scenario 2).

This is the persona built to find the old regime's best case. Salary structured as Basic+DA 50% / HRA 20% / other components 30% of gross, renting in a metro city (50% HRA-exemption rate) and paying rent equal to the full HRA received -- plus the same ₹4.25L from Scenario 3 (80C, 80D, NPS 80CCD(1B), home loan interest). This adds a large HRA exemption on top of everything else, available only under the old regime.

This is where the crossover actually happens. At ₹18L, the old regime pulls ahead by ₹16,640. At ₹25L, the two are almost exactly tied (both compute to ₹3,19,800 -- a coincidence of this particular income level and deduction mix, not a general rule). At ₹50L, the old regime wins clearly, by ₹1,17,000. Only at the two lower income levels (₹8L and ₹12L) does the new regime still win or tie -- at ₹8L both are zero again for the same rebate-threshold reason as Scenario 3, and at ₹12L the new regime is still ahead by ₹22,360.

The takeaway is not "high earners should pick the old regime" -- it is that the crossover point depends heavily on how large your genuinely old-regime-only claims are (HRA + home loan interest, specifically) relative to your income. A metro renter with a home loan and maxed Chapter VI-A deductions is exactly the profile the old regime was designed to reward, and at higher incomes, that reward can outweigh the new regime's lower slab rates. Run your own numbers on the Income Tax Calculator -- the moment your rent, HRA structure, or income differs from this persona, your crossover point moves too.

Across all twenty data points here, the pattern is consistent: the new regime is the safer default for anyone without large HRA or home loan claims, and it wins comfortably at every income level once deductions are modest. The old regime only pulls ahead when HRA and home loan interest -- specifically, NOT just 80C/80D/NPS on their own -- are both large relative to income, which in practice means a metro-city renter with a home loan.

These four scenarios are illustrative personas, not a substitute for your own numbers -- your actual salary structure, city, rent, and deduction mix will place you somewhere different on this spectrum. Use the Income Tax Calculator for a result matched to your own inputs, the HRA Calculator if isolating just the HRA exemption is your immediate question, and the Deduction Gap Planner if you want to see how much room you still have left in each Chapter VI-A limit before deciding.