New Tax Regime vs Old Tax Regime: FY 2025-26 Guide

How should you compare the new tax regime vs old tax regime?

The better regime is the one producing the lower lawful tax liability for your actual circumstances, not the one with the most deductions or the lowest advertised slab. Begin with the same complete income in both calculations. Then apply each regime’s exemptions, deductions, rates and rebates separately. Salary, interest, rent, business profit and capital gains can interact differently. A comparison based only on monthly take-home pay can miss important income and year-end adjustments.

This guide covers FY 2025-26, corresponding to AY 2026-27, under the Income-tax Act, 1961 framework. The Income-tax Act, 2025 is scheduled to take effect from 1 April 2026; check current section numbers and official assessment-year instructions. Rates and limits below are stated as of FY 2025-26. Do not use them automatically for income earned in a later financial year, even if your investment plans or payroll declarations continue unchanged.

What are the new regime tax slabs for FY 2025-26?

Under the new regime, income up to ₹4,00,000 is taxed at nil. The next slabs are ₹4,00,001–₹8,00,000 at 5%, ₹8,00,001–₹12,00,000 at 10%, ₹12,00,001–₹16,00,000 at 15%, ₹16,00,001–₹20,00,000 at 20%, and ₹20,00,001–₹24,00,000 at 25%. Income above ₹24,00,000 is taxed at 30%. These are progressive bands: crossing a threshold does not cause your entire income to be taxed at the new highest rate.

For taxable ordinary income of ₹16,00,000, the slab calculation is nil on the first ₹4,00,000, ₹20,000 on the next ₹4,00,000, ₹40,000 on the next ₹4,00,000 and ₹60,000 on the final ₹4,00,000. That totals ₹1,20,000 before cess and any applicable adjustment. Health and education cess is 4%, giving ₹1,24,800 in this simple example. Surcharge and special-rate income require additional checks when relevant rather than being ignored in every comparison.

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What are the old regime slabs and age-related limits?

For an individual below 60, the old regime generally exempts the first ₹2,50,000, taxes ₹2,50,001–₹5,00,000 at 5%, ₹5,00,001–₹10,00,000 at 20%, and income above ₹10,00,000 at 30%. Resident senior citizens aged 60 to below 80 generally have a ₹3,00,000 basic exemption, and resident individuals aged 80 or more generally have ₹5,00,000. These age-related basic exemptions do not operate in the same way under the new regime.

As of FY 2025-26, the old-regime section 87A rebate for an eligible resident individual with total income not exceeding ₹5,00,000 is limited to ₹12,500. That is different from the new-regime rebate and should not be mixed with it. A non-resident cannot assume eligibility for a resident-individual rebate or age-based resident concession. Check residence status, taxable income and any special-rate tax before concluding that being below a headline income figure means no tax.

How does the ₹12 lakh rebate work?

Under the new regime for FY 2025-26, an eligible resident individual with total income up to ₹12,00,000 can receive a section 87A rebate of up to ₹60,000, subject to the statutory conditions. This is a rebate against tax, not a ₹12 lakh basic exemption. Slab tax is first calculated and then the eligible rebate is applied. Above the threshold, limited marginal relief can reduce the abrupt increase in tax for qualifying income.

Special-rate income needs particular care because the enhanced rebate does not simply eliminate tax on every kind of income. Tax on qualifying capital gains or other specially taxed amounts can remain even when total income appears within ₹12 lakh. For an eligible salaried person with only ordinary salary income, the ₹75,000 standard deduction can mean salary of ₹12,75,000 produces taxable income of ₹12,00,000. Other income, residence status and eligibility can change that outcome.

Which deductions and exemptions change between regimes?

As of FY 2025-26, eligible salary generally receives a ₹75,000 standard deduction under the new regime and ₹50,000 under the old regime. The old regime can additionally allow eligible HRA exemption and deductions such as section 80C, section 80D and an eligible additional NPS contribution under section 80CCD(1B), subject to their conditions. These familiar claims are generally unavailable under the new regime. Do not assume every insurance premium or investment automatically qualifies even under the old regime.

The new regime still permits specified benefits, including eligible employer NPS contributions under section 80CCD(2), subject to applicable conditions and limits. It does not make every retirement receipt or employment benefit taxable. House-property deductions and losses also need careful regime-specific treatment; for example, interest on a self-occupied home is not available as the familiar deduction under the new regime. Build the comparison from the actual statutory permissions rather than the misleading slogan that one regime has no deductions.

What happens at a salary of ₹12 lakh?

Assume a resident employee below 60 has gross salary of ₹12,00,000, no other income, no special-rate income and no deductions except the standard deduction. Under the new regime, taxable income is ₹11,25,000 after subtracting ₹75,000. Slab tax is ₹52,500 before rebate, and the eligible rebate reduces it to nil. This example depends on the stated assumptions; it is not a guarantee that every person receiving ₹12 lakh during the year owes no tax.

Under the old regime, taxable salary is ₹11,50,000 after the ₹50,000 standard deduction. Tax is ₹12,500 on the ₹2,50,000–₹5,00,000 band, ₹1,00,000 on the next ₹5,00,000 and ₹45,000 on the remaining ₹1,50,000. That is ₹1,57,500 before cess, or ₹1,63,800 including 4% cess. Genuine old-regime exemptions and deductions could reduce this figure, but you must calculate them rather than assuming their presence makes the old regime competitive.

Can large deductions make the old regime better?

Yes, depending on income and the size of genuine claims. Consider gross salary of ₹20,00,000 with no other income. Under the new regime, subtracting the ₹75,000 standard deduction gives ₹19,25,000. Slab tax is ₹1,85,000, and 4% cess brings the total to ₹1,92,400. This assumes ordinary salary income, no employer NPS adjustment and no surcharge. Use the same assumptions consistently when constructing the old-regime side of the comparison.

Now suppose the employee has ₹7,00,000 of independently valid old-regime exemptions and deductions in addition to the ₹50,000 standard deduction. Old-regime taxable income becomes ₹12,50,000. Tax is ₹1,87,500 before cess and ₹1,95,000 after cess, so the new regime remains slightly lower. If those genuine additional claims instead total ₹7,50,000, old-regime taxable income becomes ₹12,00,000 and tax including cess is ₹1,79,400. This shows why actual calculations outperform a universal break-even slogan.

Can you choose a different regime when filing?

The new regime is the default, but eligible taxpayers can opt for the old regime through the prescribed process. Individuals without business or professional income can generally choose annually in a timely return, subject to the applicable rules. The regime indicated to your employer guides TDS; it does not necessarily lock the final return choice. If you switch, recompute exemptions and deductions rather than retaining old-regime benefits inside a new-regime salary calculation.

Taxpayers with business or professional income face additional requirements, including the prescribed option form and restrictions on switching back and forth. Under the FY 2025-26 framework, Form 10-IEA is relevant to opting out of the default regime in such cases, subject to the statutory deadline. A small freelance activity can therefore matter even if salary is your main income. Check the official instructions before filing, especially if you have exercised or withdrawn an option in an earlier year.

What checklist should you use before deciding?

Collect Form 16, interest statements, investment and insurance proofs, rent records, home-loan details, capital-gains statements and any employer NPS information. Prepare two complete computations using the same income data. Include cess, surcharge where relevant, special-rate taxes and permitted rebates. Compare the final liability rather than merely taxable income or the monthly TDS shown by payroll. Also check whether an investment is worthwhile on its own merits instead of buying it only to claim a deduction.

After choosing, confirm that you can validly exercise the option within the applicable deadline and that the return reflects the selected regime consistently. Reconcile TDS and advance tax, pay any balance and complete return verification. Keep both comparison workings and the supporting evidence. Revisit the decision each financial year because salary, rent, family insurance, home ownership and tax law can change. A regime that was clearly better last year can be worse after a promotion or a major deduction ends.