Zerodha provides leverage or margin when intraday orders are placed (MIS or CO) based on the prescribed peak margin requirements by SEBI and can be checked by visiting zerodha.com/marketintel/bulletin/249809/latest-intraday-leverages-mis-bo-co To learn more about peak margin requirements, visit zerodha.com/z-connect/zerodha/bulletin-latest-at-zerodha/peak-margin-intraday-leverages-2nd-order-effects-dec-1st-2020. No additional margins are provided.
As stated in this circular (WEB), providing additional margins based on their account balance through an NBFC and charging interest on the borrowed margin is a severe regulation violation, and brokers are not allowed to engage in this practice.