The Income Tax Department has stepped up its efforts to bring more people into the tax net by closely tracking high-value financial transactions carried out by individuals and entities who do not file income tax returns, Parliament was informed recently. As part of this effort, the Central Board of Direct Taxes (CBDT) has rolled out a Non-Filer Monitoring System (NMS). The system uses data analytics to identify people who have undertaken large financial transactions but have not filed their income tax returns, the Finance Ministry said in a response to a query in the Rajya Sabha.