C S Rushil & Co.Chartered Accountants

19 September 2026 · Written by CA Rushil C S

Old vs New Tax Regime for FY 2026 to 27: Which One Actually Saves You Money

Salaried professionals and small business owners in Chennai ask this every year: old tax regime or new? The honest answer depends on your actual deductions.

Every year around this time, salaried professionals and small business owners in Chennai ask the same question: should I stick with the old tax regime or move to the new one. The honest answer is that it depends entirely on your deductions, and running the actual numbers matters more than following a general rule of thumb.

What the new regime offers

The new regime gives you lower slab rates but takes away most of the deductions and exemptions that the old regime allowed, including Section 80C investments, HRA exemption, and the standard housing loan interest benefit on a self occupied property. It is simpler to file and works well for people with few investments or no home loan.

What the old regime still offers

If you have a home loan, pay life or health insurance premiums, invest in PPF or ELSS, or claim HRA because you live in rented accommodation, the old regime often still comes out ahead once all these deductions are added up, even with its higher slab rates.

The comparison actually depends on your numbers

There is no universal answer here. Someone earning fifteen lakh a year with a home loan and full 80C investments will often save more under the old regime. Someone earning the same amount with no major deductions will usually save more under the new one. The only way to know for certain is to compute your tax liability both ways using your actual income and actual deduction amounts.

A few things people get wrong

Assuming last year's choice is automatically still the better one this year is a common mistake, especially if your income or deduction pattern changed. Salaried individuals can also switch between regimes every year when filing, while those with business income face more restrictions on switching back and forth, which is worth knowing before you commit.

A quick way to think about it

  • List every deduction you can genuinely claim: 80C, 80D, home loan interest, HRA
  • Add them up and compare your net tax liability under both regimes using current slab rates
  • If deductions total more than roughly three to four lakh rupees, the old regime often wins
  • If deductions are minimal, the new regime usually wins

If you want an actual side by side calculation using your real income and deductions rather than a generic comparison, C S Rushil & Co. in Anna Nagar can run both scenarios for you before you file. Book a free consultation to find out which regime fits your situation this year.

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