Old vs New Tax Regime in India: Which One Should You Pick?
A clear breakdown of how the two Indian income tax regimes differ, with the income brackets where each one wins.
Every March, the same conversation plays out in offices across India: should I file under the old tax regime or the new one? The honest answer is "it depends" — but the variables that decide it are smaller than you'd think. Here's how to work it out without spreadsheets.
What changed and why
The old regime is the one most people grew up with: progressive tax slabs combined with a long list of deductions and exemptions — Section 80C, HRA, LTA, home loan interest under 24(b), medical insurance under 80D, and so on.
The new regime, made the default in 2023 and tweaked further in 2024, offers lower tax rates in exchange for giving up most deductions. The pitch is simplicity: no investment proofs, no rent receipts, no certificates.
The current new regime slabs (FY 2024–25)
- Up to ₹3,00,000 — nil
- ₹3,00,001 to ₹7,00,000 — 5%
- ₹7,00,001 to ₹10,00,000 — 10%
- ₹10,00,001 to ₹12,00,000 — 15%
- ₹12,00,001 to ₹15,00,000 — 20%
- Above ₹15,00,000 — 30%
A standard deduction of ₹75,000 is available for salaried taxpayers, and a Section 87A rebate makes income up to ₹7,00,000 effectively tax-free.
The old regime, briefly
- Up to ₹2,50,000 — nil
- ₹2,50,001 to ₹5,00,000 — 5%
- ₹5,00,001 to ₹10,00,000 — 20%
- Above ₹10,00,000 — 30%
Standard deduction of ₹50,000, plus the deductions menu — 80C up to ₹1.5L, 80D up to ₹25K (₹50K for senior citizens), HRA, home loan interest up to ₹2L, NPS additional ₹50K under 80CCD(1B), and others.
The break-even logic
The old regime wins when your total deductions exceed a threshold that depends on your income. Roughly:
- Income ₹7–10L: old regime wins if you claim more than about ₹2.5L in deductions.
- Income ₹10–15L: old regime wins if you claim more than about ₹3.75L in deductions.
- Income ₹15L+: old regime wins if you claim more than about ₹4.25L in deductions.
For someone with a home loan (₹2L interest), full 80C utilisation (₹1.5L), and 80D (₹25K), that's already ₹3.75L — the old regime usually wins. For a young professional renting modestly with only PF contributions, the new regime almost always wins.
Things people forget to count
- HRA exemption can be substantial in metros — easily ₹1.5–3L for renters earning ₹15L+.
- Employer NPS contribution under 80CCD(2) (up to 14% of basic for central govt, 10% for others) is allowed in the *new regime too* — don't forget to claim it.
- Standard deduction applies to both regimes for salaried employees — it's not a deciding factor.
What the calculator should actually do
A good income tax calculator runs both regimes side by side with your actual numbers and tells you the difference in rupees. Don't trust any tool that just gives you one answer — the comparison is the entire value.
A practical approach
- Add up the deductions you genuinely use today (not the ones you *could* use).
- Run both regimes through a calculator with those numbers.
- If the difference is under ₹10,000 a year, pick the new regime — the time saved on documentation is worth it.
- If the old regime wins by more than ₹25,000, stick with it and keep your investment habit going.
A note on changing regimes
Salaried employees can switch between regimes every financial year. Business and professional income earners can only switch back to the old regime once after opting for the new — so think harder before changing.
The right regime isn't a moral choice — it's an arithmetic one. Spend ten minutes with a calculator each February and let the numbers decide.