In this mini series in the 10-day run-up to Budget 2026, we will every day take up and explain one word/term that is used in the budget. It will help you as investors to better understand the document that is the primary instrument through which the government's fiscal policy is articulated and implemented. This is important, as the decisions announced in the budget impact every part of the economy, including the stock market. Our word/term for the day is: Fiscal deficit. Just this number moving by a few basis points here or there will make the Nifty or Sensex move up or down strongly.