Passengers bringing foreign exchange into the country, are required to declare foreign exchange in a Currency Declaration Form (CDF), when the aggregate value exceeds USD 10,000 or when foreign currency notes alone exceed USD 5,000 or its equivalent. The form must be presented to authorised banks or money changers when converting foreign currency into Indian rupees or reconverting rupees into foreign currency. Visitors who do not fully utilise the declared foreign exchange are required to retain the form and present it to customs authorities upon departure to take the unspent balance out of India.