Foreign-currency income conversion uses TTBR on prescribed dates, with separate timing rules for tax deduction and IFSC payments.

Rule 206 requires foreign-currency income to be converted into Indian rupees using the TTBR on the prescribed specified date, which varies by income category. Income subject to TDS uses the date on which deduction is required. Rule 207 applies TTBR on the TDS deduction date for payments involving assessees outside India and IFSC Units; the last published rate may be used if no rate is published that day. The provisions retain earlier conversion principles while expressly addressing IFSC-related payments.

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