Start with the right inputs
Gather your salary statement, other income details and evidence for deductions you may be entitled to claim. A headline salary alone does not describe every part of taxable income.
Make two like-for-like calculations
The old and new regimes have different rates and deduction rules. Use the same income information when comparing them, and apply only deductions available in the selected regime. Check the year shown in the official calculator.
Know what an estimate leaves out
Our Income Tax Estimate demonstrates a limited slab model. It does not reproduce every tax rule or replace a return assessment. Special-rate income, residency, age, deductions and credits may change the outcome.
For a current assessment, use the Income Tax Department calculator and its regime comparison guidance.
Keep a record of the comparison
Save the inputs and assumptions you used so you can update them when circumstances change. Ask a qualified adviser about eligibility and filing choices if your situation is not covered by the calculator.