Tax Intelligence
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25+ tax calculators updated for FY 2025-26. Old vs new regime comparison, section-wise deduction guides, capital gains tax, and NRI tax analysis. Calculate with certainty.
Old vs New Regime — Which saves you more?
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Understanding India's Income Tax System
India's income tax framework is governed by the Income Tax Act, 1961, which has been amended through successive Finance Acts over six decades. The Central Board of Direct Taxes (CBDT), operating under the Ministry of Finance, administers the Act and issues circulars, notifications, and rules that clarify and implement its provisions. Every resident individual, Hindu Undivided Family (HUF), firm, company, and other persons whose gross total income exceeds the basic exemption limit in a financial year is required to file an income tax return (ITR).
A financial year (FY) runs from 1 April to 31 March. Tax is computed on income earned during the financial year, but the return is filed and assessed in the subsequent assessment year (AY). For example, income earned during FY 2025-26 (1 April 2025 to 31 March 2026) is assessed in AY 2026-27, and the ITR filing deadline for salaried individuals and non-audit cases is typically 31 July of the assessment year. For taxpayers whose accounts require audit under Section 44AB, the due date extends to 31 October, and for those requiring transfer pricing reports, it is 30 November.
The Act classifies all income under five heads: (1) Income from Salary, which covers wages, allowances, perquisites, and retirement benefits received from an employer; (2) Income from House Property, which taxes the annual value of property owned by the taxpayer, whether self-occupied or let out; (3) Profits and Gains of Business or Profession, covering income from trade, commerce, manufacturing, freelancing, and professional services; (4) Capital Gains, which taxes the profit from selling capital assets such as real estate, shares, mutual funds, gold, and bonds; and (5) Income from Other Sources, a residual head covering interest income, dividends, lottery winnings, gifts, and any income not classifiable under the other four heads.
A Permanent Account Number (PAN) is mandatory for filing returns and conducting high-value financial transactions. Since 2024, Aadhaar-PAN linking is also compulsory, and failure to link renders the PAN inoperative. Taxpayers can file ITR online through the Income Tax e-Filing portal (incometax.gov.in) using the appropriate ITR form: ITR-1 (Sahaj) for salaried individuals with income up to Rs 50 lakh, ITR-2 for individuals with capital gains or foreign income, ITR-3 for those with business or professional income, and ITR-4 (Sugam) for those opting for presumptive taxation under Sections 44AD, 44ADA, or 44AE.
New Tax Regime vs Old Tax Regime — A Detailed Comparison
The Union Budget 2025-26 made the new tax regime the default option for all individual taxpayers and HUFs. Unless a taxpayer explicitly opts out by filing Form 10-IEA before the due date, their income will be computed under the new regime. Both regimes coexist, and choosing the right one can save tens of thousands of rupees in tax liability each year.
New Tax Regime Slabs for FY 2025-26
Under the new regime, the revised slab structure offers wider brackets and lower rates. Income up to Rs 4,00,000 is fully exempt. The 5% slab applies from Rs 4,00,001 to Rs 8,00,000, followed by 10% on Rs 8,00,001 to Rs 12,00,000, 15% on Rs 12,00,001 to Rs 16,00,000, 20% on Rs 16,00,001 to Rs 20,00,000, 25% on Rs 20,00,001 to Rs 24,00,000, and 30% on income exceeding Rs 24,00,000. A standard deduction of Rs 75,000 is available to salaried individuals and pensioners. Section 87A provides a tax rebate of up to Rs 60,000, effectively making income up to Rs 12,75,000 tax-free for salaried taxpayers when accounting for the standard deduction.
Old Tax Regime Slabs for FY 2025-26
The old regime retains the familiar three-slab structure: income up to Rs 2,50,000 is exempt, Rs 2,50,001 to Rs 5,00,000 is taxed at 5%, Rs 5,00,001 to Rs 10,00,000 at 20%, and income above Rs 10,00,000 at 30%. Senior citizens (60-80 years) enjoy a higher basic exemption of Rs 3,00,000, and super senior citizens (80+) get Rs 5,00,000. The old regime allows a standard deduction of Rs 50,000 for salaried individuals.
When the Old Regime Is Better
The old regime tends to be more advantageous if your total deductions and exemptions exceed approximately Rs 3,75,000 for income levels up to Rs 15 lakh, or roughly Rs 4,25,000 for higher income brackets. Taxpayers who fully utilise Section 80C (Rs 1,50,000), Section 80D (Rs 25,000 to Rs 1,00,000), claim HRA exemption (which can range from Rs 1,00,000 to Rs 3,00,000+ in metro cities), avail home loan interest deduction under Section 24(b) (up to Rs 2,00,000 for self-occupied property), and contribute to NPS under Section 80CCD(1B) (Rs 50,000) will almost certainly save more tax under the old regime.
When the New Regime Wins
The new regime is better suited for taxpayers who do not have significant deductions — particularly those living in employer-provided accommodation (no HRA to claim), those without home loans, younger professionals who have not yet built a large investment portfolio, and anyone who prefers simplicity over tax-planning complexity. It is also structurally advantageous for very high incomes (above Rs 20 lakh) where the wider slabs and lower marginal rates outpace the benefit of deductions unless those deductions are exceptionally large.
Deductions Still Available Under the New Regime
While the new regime strips away most deductions, a few survive. Employer contributions to NPS under Section 80CCD(2) up to 14% of basic salary (for central government employees) or 10% (for others) remain deductible. Standard deduction of Rs 75,000 for salaried taxpayers applies. Interest on home loan for let-out property can be claimed (but not for self-occupied property). Deduction under Section 80JJAA for new employee cost is available for eligible businesses. Family pension deduction of Rs 15,000 under Section 57(iia) also applies. These limited deductions mean the new regime is designed for simplicity, not for aggressive tax planning.
Tax-Saving Strategies for Salaried Individuals
Salaried employees in India have access to a structured set of deductions and exemptions that, when planned strategically, can reduce taxable income by Rs 5,00,000 or more. Effective tax planning begins at the start of the financial year and involves choosing the right mix of investments, insurance, and allowance structures.
Section 80C — The Foundation of Tax Saving
Section 80C permits deductions up to Rs 1,50,000 per financial year across a wide range of instruments. Public Provident Fund (PPF) offers tax-free returns with a 15-year lock-in and current interest rate of 7.1% per annum. Employee Provident Fund (EPF) contributions by the employee qualify automatically. Equity Linked Savings Schemes (ELSS) are tax-saving mutual funds with the shortest lock-in of just 3 years, making them the most liquid 80C option. National Pension System (NPS) Tier-I contributions qualify under 80C in addition to the separate 80CCD(1B) benefit. Life insurance premiums (for policies with sum assured at least 10 times the annual premium), tuition fees for up to two children, 5-year tax-saving fixed deposits, National Savings Certificate (NSC), Sukanya Samriddhi Yojana, and home loan principal repayment also qualify.
Section 80D — Health Insurance Premium
Premiums paid for health insurance policies are deductible under Section 80D. For individuals below 60 years, the deduction is up to Rs 25,000 for self, spouse, and children. An additional Rs 25,000 is available for parents' health insurance, or Rs 50,000 if the parents are senior citizens. If both the taxpayer and parents are senior citizens, the total deduction can reach Rs 1,00,000. Preventive health check-up expenses up to Rs 5,000 are included within this limit. This deduction is available under both old and new regimes only for employer-paid policies; under the old regime, self-paid premiums also qualify.
Section 80CCD(1B) — NPS Additional Benefit
Over and above the Rs 1,50,000 limit of Section 80C, taxpayers can claim an additional deduction of Rs 50,000 for contributions to the National Pension System under Section 80CCD(1B). This makes NPS one of the most tax-efficient instruments under the old regime, offering a combined deduction potential of Rs 2,00,000 (Rs 1,50,000 under 80C + Rs 50,000 under 80CCD(1B)). The NPS Tier-I account has a lock-in until age 60, with partial withdrawals permitted for specific purposes like higher education, home purchase, or medical emergencies after 3 years.
HRA Exemption
Salaried individuals who receive House Rent Allowance and pay rent for their accommodation can claim HRA exemption under Section 10(13A). The exempt amount is the least of: (a) actual HRA received, (b) 50% of basic salary for metro cities (Delhi, Mumbai, Kolkata, Chennai) or 40% for non-metro cities, and (c) actual rent paid minus 10% of basic salary. For a salaried professional earning Rs 10,00,000 basic salary in Mumbai and paying Rs 40,000 per month rent, the HRA exemption can exceed Rs 3,80,000 annually. This exemption is only available under the old regime.
Home Loan Benefits
Home loan borrowers can claim interest paid on housing loans up to Rs 2,00,000 per year under Section 24(b) for a self-occupied property under the old regime. The principal repayment qualifies under Section 80C. For first-time home buyers who took loans between 1 April 2019 and 31 March 2022 for properties valued up to Rs 45 lakh, an additional interest deduction of Rs 1,50,000 was available under Section 80EEA, though this benefit has now expired for new loans. Under the new regime, home loan interest is deductible only for let-out (rented) properties with no cap, while self-occupied property interest gets no deduction.
Capital Gains Taxation in India
Capital gains tax applies when you sell a capital asset — such as shares, mutual funds, real estate, gold, or bonds — at a profit. The tax rate depends on two factors: the type of asset and the duration for which it was held. The Union Budget 2024 introduced significant changes to capital gains taxation, simplifying the holding period structure and revising tax rates.
Holding Periods and Classification
Listed equity shares and equity-oriented mutual funds are classified as long-term if held for more than 12 months. Debt mutual funds, unlisted shares, and all other assets (gold, real estate, foreign equity) are treated as long-term if held for more than 24 months. Short-term capital gains (STCG) arise when assets are sold before these thresholds. The distinction matters because LTCG and STCG attract different tax rates and, in some cases, different exemption limits.
Tax Rates from FY 2024-25 Onwards
Long-term capital gains on listed equity shares and equity-oriented mutual funds are taxed at 12.5% on gains exceeding Rs 1,25,000 per financial year. This threshold aggregates across all equity LTCG transactions in the year. Short-term capital gains on listed equity (where Securities Transaction Tax is paid) are taxed at a flat rate of 20%. For all other assets — real estate, gold, debt funds, unlisted shares — LTCG is taxed at 12.5% without indexation benefit from FY 2024-25 onwards. STCG on non-equity assets is added to total income and taxed at the applicable slab rate.
Key Changes from Budget 2024
The most significant change was the removal of the indexation benefit for all asset classes. Previously, taxpayers could adjust the purchase price of long-term assets using the Cost Inflation Index (CII) to account for inflation, reducing the taxable gain. From FY 2024-25, indexation is no longer available, but the LTCG rate was reduced from 20% (with indexation) to 12.5% (without indexation) to partially compensate. For real estate acquired before 23 July 2024, taxpayers can choose between the old method (20% with indexation) and the new method (12.5% without indexation), whichever results in lower tax. Debt mutual fund gains are now taxed at slab rates regardless of the holding period, a change introduced from FY 2023-24 for units purchased on or after 1 April 2023.
Exemptions Under Sections 54 and 54EC
Taxpayers can reduce or eliminate capital gains tax on real estate by reinvesting the gains. Under Section 54, LTCG from selling a residential property can be exempt if the proceeds are invested in purchasing or constructing another residential property within 2 years (purchase) or 3 years (construction). Under Section 54EC, LTCG from any long-term asset (commonly real estate) can be exempt by investing up to Rs 50 lakh in specified bonds issued by NHAI or REC within 6 months of the sale, with a 5-year lock-in period.
How Oquilia Calculates Your Tax
Oquilia's tax calculators are built to mirror the computation methodology prescribed by the Income Tax Act, 1961, as amended by the Finance Act, 2025. Each calculator follows the exact sequence mandated by the Act: determining gross total income under the applicable heads, applying eligible deductions and exemptions, arriving at total taxable income, computing tax at the applicable slab rates, and then applying surcharge and health and education cess.
For the new tax regime, Oquilia applies the FY 2025-26 slab rates with the revised basic exemption limit of Rs 4,00,000, the Rs 75,000 standard deduction for salaried individuals, and the enhanced Section 87A rebate of Rs 60,000 (for taxable income up to Rs 12,00,000 after standard deduction). The surcharge structure is applied at 10% for income between Rs 50 lakh and Rs 1 crore, 15% for Rs 1 crore to Rs 2 crore, and 25% for income above Rs 2 crore (capped at 25% under the new regime). A health and education cess of 4% is applied on the total of income tax and surcharge.
For the old tax regime, Oquilia computes deductions across all major sections — 80C, 80CCD, 80D, 80E (education loan interest), 80G (donations), 80TTA/80TTB (savings account interest), and 80U (disability). HRA exemption is calculated using the three-way minimum formula prescribed under Section 10(13A). Leave Travel Allowance (LTA), professional tax, and gratuity exemptions are factored where applicable. The old regime surcharge rates are 10% (Rs 50L to Rs 1 crore), 15% (Rs 1 crore to Rs 2 crore), 25% (Rs 2 crore to Rs 5 crore), and 37% (above Rs 5 crore).
Marginal relief is automatically computed when income marginally exceeds the surcharge threshold. The Act provides that the additional tax (including surcharge) on income exceeding the threshold should not exceed the incremental income itself. For example, if taxable income is Rs 50,10,000, the surcharge payable is limited so that the total tax does not exceed the tax at Rs 50,00,000 plus the excess income of Rs 10,000. Oquilia's marginal relief calculator handles this computation precisely, including edge cases where multiple surcharge slabs interact.
All calculators are updated within days of any CBDT notification or Finance Act amendment. The results include a full breakup showing gross income, deductions claimed, taxable income, tax at slab rates, surcharge, cess, and final tax payable or refund due. For the old-vs-new regime comparison tool, Oquilia runs both computations in parallel and highlights the regime that results in lower outflow, along with the exact savings amount and a recommendation based on your specific deduction profile.