Income Tax Slabs rates for AY 2024–25 (FY 2023–24)

Income Tax Slabs Rates for AY 2024–25 (FY 2023–24)

For AY 2024-25 (income earned in FY 2023-24, April 2023 to March 2024), the new tax regime under section 115BAC became the default for all individual taxpayers. The basic exemption limit rose to ₹3 lakh, and the section 87A rebate was extended to ₹7 lakh of total income, making tax liability nil for most taxpayers below that threshold. The old regime remained available but had to be actively chosen. These rules apply to every revised return, rectification, and reassessment for that year — including matters still open before the Income Tax Department in 2026.

Why AY 2024-25 Still Matters If You Are Reading This in 2026

Original returns for AY 2024-25 were due by 31 July 2024 (non-audit) and 31 October 2024 (audit cases). Revised returns and belated returns could be filed up to 31 December 2024. Those windows are closed.

What is not closed: rectification applications under section 154 (up to four years from the end of the financial year in which the intimation or order was issued), pending refund claims, appeals before CIT(A) or ITAT, and reassessment proceedings under section 148. If your AY 2024-25 intimation under section 143(1) incorrectly denied the 87A rebate, applied the wrong regime, or computed surcharge at the wrong rate, you can and should file a rectification on the e-Filing portal (incometax.gov.in) today. Understanding the exact rules that applied in FY 2023-24 is therefore a live, practical need — not just academic revision.

Additionally, Finance Act 2026 rates (AY 2027-28) are now in force. Comparing the two helps you articulate the incremental benefit to clients who are modelling multi-year tax planning.

New Tax Regime Slabs for FY 2023-24 (Section 115BAC)

The Finance Act 2023 restructured the new regime, making it the default and widening the slabs. For resident and non-resident individuals, HUFs, AOPs, and BOIs, the slabs were:

The new regime applies uniformly regardless of age — there is no enhanced basic exemption for senior citizens (60–79) or super-senior citizens (80+) under section 115BAC. That differential exists only in the old regime.

What Changed from FY 2022-23

Prior to Finance Act 2023, the new regime had seven slabs and a basic exemption of ₹2.5 lakh. The 2023 overhaul compressed the slabs, raised the exemption to ₹3 lakh, and critically, extended the 87A rebate from ₹5 lakh to ₹7 lakh. These three changes together are what made the new regime the structural default rather than a minority election.

The maximum surcharge on income above ₹5 crore was also reduced from 37% to 25% under the new regime, capping the effective marginal rate for ultra-high earners. Under the old regime, the 37% surcharge continued for incomes above ₹5 crore.

Standard Deduction and Family Pension Deduction — New Additions

Two deductions, previously available only in the old regime, were brought into the new regime from FY 2023-24:

• Standard deduction of ₹50,000 for salaried employees and pensioners. This applies against salary income, reducing taxable income before applying slabs.
• Family pension deduction for recipients of a deceased employee's family pension: lower of ₹15,000 or one-third of the family pension received.

This was a significant concession. In FY 2022-23, a salaried taxpayer under the new regime received no standard deduction, making the old regime comparatively attractive at moderate income levels. From FY 2023-24, the playing field was partially levelled.

Old Tax Regime Slabs for FY 2023-24

Taxpayers who explicitly opted for the old regime — by filing Form 10-IEA if they had business income, or simply by selecting it while filing the ITR — faced the following rates:

Senior and Super-Senior Citizen Exemptions

Under the old regime only:

• Senior citizens (age 60–79): Basic exemption of ₹3,00,000 (nil tax)
• Super senior citizens (age 80 and above): Basic exemption of ₹5,00,000 (nil tax)

These age-based thresholds do not exist in the new regime. A 75-year-old salaried pensioner under the new regime gets the same ₹3 lakh exemption as a 35-year-old employee. This matters enormously when advising retired clients with moderate incomes — the old regime can be meaningfully cheaper.

Deductions Available Only in the Old Regime

The old regime permits the full suite of Chapter VI-A deductions and specific exemptions:

• Section 80C (ELSS, PPF, LIC, EPF, home loan principal, children's tuition fees): up to ₹1,50,000
• Section 80D (health insurance premiums for self and parents): up to ₹25,000 self + ₹50,000 for senior parent policies
• Section 80G (charitable donations): as per donation certificates
• HRA exemption under section 10(13A): based on actual rent paid, salary, and city category
• Home loan interest under section 24(b): up to ₹2,00,000 for self-occupied property
• NPS employer contribution under section 80CCD(2): this one is also available in the new regime, and is frequently overlooked
• LTA (Leave Travel Allowance) under section 10(5)

The new regime disallows all of the above except section 80CCD(2) (employer's NPS contribution) and section 80CCH (Agniveer corpus). If these exemptions add up to a significant amount — as they typically do for homeowners — the old regime remains competitive.

Section 87A Rebate: The Mechanics That Trip People Up

New Regime Rebate (Up to ₹7 Lakh)

A resident individual (not an HUF or firm) whose total income does not exceed ₹7,00,000 is entitled to a rebate under section 87A equal to the actual tax payable or ₹25,000, whichever is lower. The practical effect: if your total income (after all deductions allowed under the new regime, including the ₹50,000 standard deduction) is ₹7 lakh or below, your income tax liability is zero.

For a salaried employee with gross salary of ₹7,50,000:

• Standard deduction: ₹50,000
• Total income: ₹7,00,000
• Tax on ₹7,00,000: nil on ₹3L + 5% on ₹3L + 10% on ₹1L = ₹15,000 + ₹10,000 = ₹25,000
• Rebate: ₹25,000
• Net tax: nil

That same employee earning ₹7,50,000 gross with ₹50,000 salary (not salary) income taking total income to ₹7,50,000 gets no rebate because total income crosses ₹7L.

How Marginal Relief Works — With Numbers

Without marginal relief, every rupee earned above ₹7 lakh triggers full tax on the entire income with no rebate. That would create a cliff: earning ₹7,00,001 would suddenly cost you ₹25,000 in tax for one extra rupee of income. Marginal relief prevents this.

Mechanics: Tax after marginal relief = minimum of (tax computed without rebate) OR (total income minus ₹7,00,000).

Worked illustration: Total income under the new regime is ₹7,20,000.

• Tax on ₹7,20,000: nil on ₹3L + 5% on ₹3L (₹15,000) + 10% on ₹1,20,000 (₹12,000) = ₹27,000
• Since income > ₹7L, no 87A rebate applies directly.
• Income above ₹7L threshold = ₹20,000
• Marginal relief = ₹27,000 − ₹20,000 = ₹7,000
• Tax after marginal relief = ₹27,000 − ₹7,000 = ₹20,000
• Add cess at 4%: ₹800
• Total liability: ₹20,800

The practical takeaway: tax liability at ₹7,20,000 income (₹20,800) is still less than the tax jump would have been without marginal relief (₹28,080). The cliff is smoothed out, but it is not eliminated. Once you cross roughly ₹7,28,000 (income level where tax exceeds the ₹28,000 mark and marginal relief exhausts), you pay full slab tax.

Old Regime Rebate (Up to ₹5 Lakh)

Under the old regime, section 87A provides a rebate of the lower of actual tax or ₹12,500, available to resident individuals with total income up to ₹5,00,000. The mechanics are identical in structure — tax is fully offset for anyone below the ₹5L threshold — but the rebate quantum is lower. Marginal relief similarly applies for incomes marginally above ₹5L under the old regime.

Surcharge and Health & Education Cess

Surcharge applies on the base income tax before adding cess. For FY 2023-24:

Health and Education Cess is levied at 4% on (income tax + surcharge) for all taxpayers, in all regimes. This is non-negotiable — no deduction offsets it. A common filing error is computing cess on tax alone, ignoring surcharge in the base.

Marginal relief also applies to surcharge for incomes marginally crossing the ₹50L, ₹1Cr and ₹2Cr thresholds.

Worked Example: Choosing the Right Regime at Different Income Levels

Case A: Salaried Individual — ₹8 Lakh Gross, Minimal Deductions

Priya earns ₹8,00,000 in salary. She invests ₹50,000 in ELSS (80C) and pays ₹10,000 in health insurance (80D). No HRA or home loan interest.

New Regime:

• Standard deduction: ₹50,000 → Taxable income: ₹7,50,000
• Tax: nil on ₹3L + ₹15,000 (5% on ₹3L) + ₹15,000 (10% on ₹1.5L) = ₹30,000
• Cess 4%: ₹1,200 → Total: ₹31,200

Old Regime:

• Standard deduction: ₹50,000; 80C: ₹50,000; 80D: ₹10,000 → Taxable: ₹6,90,000
• Tax: nil on ₹2.5L + ₹12,500 (5% on ₹2.5L) + ₹38,000 (20% on ₹1.9L) = ₹50,500
• Cess 4%: ₹2,020 → Total: ₹52,520

Verdict: New regime saves Priya ₹21,320. Her deductions are too thin to justify the old regime.

Case B: Salaried Individual — ₹12 Lakh Gross, High Deductions

Rahul earns ₹12,00,000. He maximises 80C (₹1,50,000), pays ₹25,000 health insurance (80D), claims HRA of ₹1,20,000, and has ₹2,00,000 in home loan interest (section 24b).

New Regime:

• Standard deduction: ₹50,000 → Taxable: ₹11,50,000
• Tax: nil on ₹3L + ₹15,000 (5% on ₹3L) + ₹30,000 (10% on ₹3L) + ₹37,500 (15% on ₹2.5L) = ₹82,500
• Cess 4%: ₹3,300 → Total: ₹85,800

Old Regime:

• Deductions: SD ₹50,000 + 80C ₹1,50,000 + 80D ₹25,000 + HRA ₹1,20,000 + Sec 24b ₹2,00,000 = ₹5,45,000
• Taxable: ₹6,55,000
• Tax: nil on ₹2.5L + ₹12,500 (5% on ₹2.5L) + ₹31,000 (20% on ₹1.55L) = ₹43,500
• Cess 4%: ₹1,740 → Total: ₹45,240

Verdict: Old regime saves Rahul ₹40,560. His deductions of ₹4,95,000 (excluding standard deduction) cross the break-even threshold decisively.

The Break-Even Deduction Threshold Explained

The commonly cited rule of thumb — "if deductions beyond standard deduction exceed ₹3.75 lakh, old regime wins" — holds approximately true for taxpayers in the ₹10–15 lakh income range. Here is why.

At ₹11.5L taxable (new regime, after SD), the rate differential between regimes is roughly 20% at the margin (old regime charges 20% on the ₹5L–₹10L band vs. 10%–15% in the new regime). Every ₹1 lakh of additional deduction in the old regime saves roughly ₹20,000 in tax. The gap between new regime tax (₹85,800 for ₹12L gross) and old regime tax without extra deductions (₹1,63,800 − ₹6,300 surcharge etc.) is approximately ₹78,000. To close this gap at a 20% marginal saving rate, you need deductions of approximately ₹3.90 lakh. The ₹3.75 lakh figure is a practical approximation.

This threshold shifts with income. For a ₹20L earner, the 30% slab means every ₹1 lakh of deduction saves ₹30,000, so the break-even deduction level is lower. For a ₹7L earner, the new regime's 87A rebate makes it almost always superior unless deductions wipe out virtually all income. Run a year-specific calculation — the thumb rule is a starting point, not a substitute for arithmetic.

How to Switch Between Regimes: Form 10-IEA and Section 115BAC(6)

For salaried taxpayers with no business or professional income, the regime choice is made at the time of filing the ITR. You simply select the regime in the return form. You can switch back and forth each year — there is no lock-in.

For taxpayers with business or professional income (including proprietors, partners in firms drawing remuneration, and freelancers), section 115BAC(6) applies:

1. To opt out of the new regime (and use the old regime), file Form 10-IEA on or before the due date of the return (31 July or 31 October as applicable).
2. Once you opt out, you are locked into the old regime unless you opt back in — and that opt-back-in can only happen once in a lifetime.
3. In practice, this means a business owner who opted out in AY 2024-25 and then regrets it cannot simply switch back the next year without giving up the option permanently.

For AY 2024-25 specifically, Form 10-IEA was filed electronically through the e-Filing portal under the "Forms" section. If a business-income taxpayer failed to file Form 10-IEA before the due date but their ITR was processed under the old regime, the Assessing Officer has grounds to recompute tax under the new regime default. If you have a pending assessment or rectification for AY 2024-25 and this scenario applies, address it with supporting documentation.

Common Mistakes in AY 2024-25 Returns — and How to Fix Them

Mistake 1: Not claiming the ₹50,000 standard deduction under the new regime. Salaried taxpayers who switched to the new regime in AY 2024-25 sometimes missed the standard deduction because it was new to that regime. This results in excess tax and a smaller (or absent) refund. Fix: File a rectification under section 154 or, if within the revised-return window (now closed for AY 2024-25), contact your Jurisdictional Assessing Officer.

Mistake 2: Applying the 87A rebate to special-rate income. The CBDT clarified that the 87A rebate under section 87A is not available against tax computed on special-rate incomes — for example, short-term capital gains under section 111A (listed equity, 15%) or long-term capital gains under section 112A (above ₹1 lakh, 10%). Several AY 2024-25 returns were processed with excess rebate claims on STCG/LTCG income, triggering demand notices. Fix: Verify your ITR computation carefully. The rebate applies only to tax on regular income at slab rates.

Mistake 3: Choosing the wrong regime and missing Form 10-IEA. Business owners who intended to use the old regime but forgot to file Form 10-IEA had their returns processed under the new regime default. This is particularly painful if they had large 80C or home loan interest deductions. Fix: If the return is still open in appeal or rectification, argue based on intent and supporting forms. Where the window has closed, note this for AY 2025-26 onwards and file Form 10-IEA proactively.

Mistake 4: Computing surcharge on incorrect income. Taxpayers with income just above ₹50 lakh sometimes miss marginal relief on surcharge. A taxpayer at ₹51 lakh income should not pay a surcharge that exceeds ₹1 lakh (the income above the ₹50L threshold). Check surcharge computation for any AY 2024-25 returns with income in the ₹50L–₹60L range.

Mistake 5: Applying the old-regime 87A threshold (₹5L) to the new-regime return. A filing error seen in practice: computing the new-regime tax correctly at ₹6.80L income, then applying a ₹12,500 rebate cap (the old-regime limit) instead of ₹25,000 (new-regime limit). This results in understated rebate and excess tax. The correct rebate under the new regime is the actual tax or ₹25,000, whichever is lower.

Key Takeaways

• New regime was the default from FY 2023-24. Salaried taxpayers did nothing to end up there; business-income taxpayers needed Form 10-IEA to opt out.
• Standard deduction of ₹50,000 entered the new regime in FY 2023-24, making the effective zero-tax threshold for salaried individuals ₹7.50 lakh gross (₹7L taxable after SD + 87A rebate).
• Section 87A rebate of ₹25,000 under the new regime wipes out tax entirely for total income up to ₹7 lakh; marginal relief softens the cliff for incomes up to approximately ₹7.27–7.30 lakh.
• 87A rebate does not apply to special-rate capital gains (STCG under 111A, LTCG under 112A) — a common source of demand notices for AY 2024-25.
• Break-even deduction threshold is approximately ₹3.75–4 lakh for taxpayers in the ₹10–15 lakh income band; homeowners with home loan interest, HRA, 80C, and 80D typically exceed this and benefit from the old regime.
• Surcharge for incomes above ₹5 crore is capped at 25% under the new regime (vs. 37% under old) — a significant difference for high-net-worth individuals.
• For open AY 2024-25 matters in 2026 (rectifications, appeals, reassessments), apply Finance Act 2023 rules precisely — the regime default, the correct rebate quantum, and the marginal relief formula — rather than transposing current-year (AY 2027-28) rules.