We update our margin files daily. Margin limits for segments (F&O, CDS, MCX) can be found on our dropbox.
The files are organized as follows:
NSEFO - FNO - Month' DD YYYY.pdf
NSECDS - CDS - Month' DD YYYY.pdf
MCX - MCX - Month' DD YYYY.pdf
The files contain margins applicable for Intraday trading (MIS - Margin Intraday), and Carry Forward (NRML - Normal). Leverages percentages are broken down in rupee value for each product.