How to use this calculator
- Enter the date of transfer, the gain and the amount invested in the bonds.
- Choose the transfer date and the investment date to match your situation.
- Read the exempt gain, the taxable balance and the last date to invest in the result.
There is a ceiling on investment per financial year and a lock-in; confirm the current limits before investing.
The result is an estimate for the figures you enter. It is not a filed return, a certificate or professional advice. Rates, thresholds and section numbers change with each Finance Act, and the Income-tax Act, 2025 applies from 1 April 2026 with new section and form numbers.
For the related work, see Income tax return (ITR) filing.
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