A Portfolio Investment Scheme (PIS) document is a set of forms and declarations required by the Reserve Bank of India (RBI) for Non-Resident Indians (NRIs) and Persons of Indian Origin (PIOs) to invest in the Indian stock market. It includes forms for opening a PIS Bank Account, details of shares purchased on a repatriation basis, and other related information. These documents are necessary to comply with RBI regulations and ensure that investments are made in accordance with the rules governing foreign investments in India.

A Portfolio Investment Scheme (PIS) Certificate is a document issued by a designated bank in India to Non-Resident Indians (NRIs) or Persons of Indian Origin (PIOs) who are eligible to invest in the Indian stock market under the PIS. This certificate is required by the Reserve Bank of India (RBI) and serves as authorisation for the investor to trade in securities in India. It contains important information such as the investor's PIS account number, details of the designated bank, and the investor's unique identification number. The certificate is necessary to ensure compliance with RBI regulations regarding foreign investments in India.

Portfolio Investment Scheme (PIS) is a scheme of the Reserve Bank of India (RBI) that allows Non-Resident Indians (NRIs) and Persons of Indian Origin (PIOs) to purchase and sell shares and convertible debentures of Indian companies on a recognised stock exchange in India. Under this scheme, NRIs and PIOs need to open a designated PIS Bank Account with a designated bank branch to undertake transactions. The bank monitors the transactions and reports them to the RBI. The PIS Account helps in managing and monitoring the investments of NRIs and PIOs in the Indian stock market in compliance with RBI regulations.