Paytm, digital payments and monetary services firm has filed draft red herring prospectus (DRHP) with marketplace regulator SEBI, to launch Rs 16,600-crore IPO. The public challenge will comprise fresh challenge of equity shares worth Rs 8,300 crore and an give-for-sale (OFS) of shares to the tune of Rs 8,300 crore. The price tag band for the Paytm IPO will be determined either at the time of filing the red herring prospectus (RHP) or prior to the IPO opening for the subscription. Morgan Stanley India Company Private Ltd, Goldman Sachs (India) Securities Private Ltd, Axis Capital, ICICI Securities, JP Morgan India Private Ltd and Citigroup Global Markets India Private Ltd will be joint international coordinators and book operating lead managers to the challenge. Link Intime India Private will be the registrar to Paytm IPO.