A special software, which smartly tabulates large mathematical data, was used by the Income Tax Department to calculate the total value of declarations that were made under the one-time black money compliance window.
Officials at the designated I-T office here said as soon as the window closed at midnight on 30th September, the software was activated to get the total number of people who made declarations and the amount declared.
The government on Thursday announced that 638 declarations have been received under the compliance window declaring undisclosed foreign assets amounting to Rs 3,770 crore.
The software has also indicated that the maximum number of declarations came from the western region of the country where large states like Maharashtra, Gujarat and Rajasthan are located.