Income Tax on ₹12.5 Lakh Taxable Income — Marginal Relief
For a taxpayer with taxable income of ₹12,50,000, marginal relief under Section 87A caps the new-regime tax at ₹50,000 before cess (₹52,000 after cess) — capped at the amount taxable income exceeds ₹12,00,000, not the ₹67,500 full slab tax most calculators would show.
Your Details
Old Regime Deductions
Total: ₹0HRA exemption is not available under the new regime — it only affects the old-regime column.
Comparison
| Component | New Regime | Old Regime |
|---|---|---|
| Gross Income | ₹12,50,000 | ₹12,50,000 |
| Total Deductions | ₹0 | ₹0 |
| Taxable Income | ₹12,50,000 | ₹12,50,000 |
| Income Tax | ₹67,500 | ₹1,87,500 |
| Rebate u/s 87A | −₹17,500 | ₹0 |
| Surcharge | ₹0 | ₹0 |
| Health & Ed. Cess | ₹2,000 | ₹7,500 |
| TOTAL TAX PAYABLE | ₹52,000 | ₹1,95,000 |
New Regime
Old Regime
Recommendation
New regime saves you ₹0 this year.
The new regime wins here because your old-regime deductions (₹0) are below the ~₹5,62,498 break-even where the old regime starts to pay off.
Marginal relief applied under Section 87A — tax capped at the amount your income exceeds ₹12,00,000.
Client summary
Income Tax Regime Comparison
FY 2026-27 (AY 2027-28) · Income-tax Act 2025
| Component | New Regime | Old Regime |
|---|---|---|
| Gross Income | ₹12,50,000 | ₹12,50,000 |
| Taxable Income | ₹12,50,000 | ₹12,50,000 |
| Total Tax Payable | ₹52,000 | ₹1,95,000 |
The new regime wins here because your old-regime deductions (₹0) are below the ~₹5,62,498 break-even where the old regime starts to pay off.
Estimate for planning purposes — confirm with a CA before filing. practiceflow.in/tools/income-tax-calculator
Why this figure is smaller than the slab tax
At ₹12,50,000 taxable income, the ordinary slab tax is ₹67,500 — a calculator that only applies the slab formula would report that figure. That's wrong: Section 87A marginal relief caps the payable tax at the excess over ₹12,00,000 (₹50,000 here), so the real pre-cess figure is ₹50,000.
This is the single most common error in free income-tax calculators — treating the ₹12,00,000 threshold as a cliff (full tax due the moment you cross it) rather than the gradual ramp the law actually specifies. Add 4% cess and the final payable amount is ₹52,000.
The rule, precisely
Let T be the slab tax on taxable income X, and E = X − ₹12,00,000. Tax payable = min(T, E). At ₹12,50,000 taxable income, T = ₹67,500 and E = ₹50,000, so tax payable is the smaller of the two: ₹50,000. This holds for every taxable income from ₹12,00,001 up to roughly ₹12,70,588, beyond which plain slab tax is already lower than E and the relief becomes redundant on its own.
Applying this correctly matters because the error runs in only one direction — a calculator that skips marginal relief always overstates the tax due in this band, never understates it. For a salaried employee checking whether their employer's TDS calculation is right, or a CA sanity-checking a client's provisional tax, that overstatement is exactly the kind of number that erodes trust once someone works out the correct figure by hand.
Frequently asked questions
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Why this matters
Running this comparison for every client, every year, is where advisory value shows up — automate it with PracticeFlow.
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See PracticeFlow for CA FirmsEstimate for planning purposes, not tax advice — always confirm with a CA before filing.