India offers old (with most deductions) and new (lower rates, fewer deductions) regimes. The better choice depends on your deductions and income level.
When New Regime Wins
Often better for taxpayers with few deductions (no large 80C/80D/HRA claims).
When Old Regime Wins
If you fully use 80C, NPS, home loan interest, and other exemptions, simulate both in software.
Conclusion
Use the official income tax portal calculators each year. Rules change—verify slab rates for AY 2026-27.