Tax
Old vs new tax regime
Two ways to calculate income tax: the old one with deductions, or the new one with lower rates but few breaks.
The old regime has higher tax rates but lets you claim deductions like 80C, 80D, HRA and home loan interest.
The new regime has lower rates and a higher rebate, but you give up almost all deductions.
Roughly, if you claim a lot of deductions the old regime can win; if you don't, the new regime usually does. Run both numbers before deciding.
For example
Someone paying big rent and maxing 80C might save more in the old regime, while a young saver with few deductions often pays less in the new one.