Financial Leverage Index is a measure of financial leverage or debt dependence, typically comparing debt with equity, net worth, assets, EBITDA, or other policy-defined base. Formula must be clearly specified. In MSME underwriting, it is read as part of the financial assessment and is usually compared across periods, peers, banking conduct and management explanations. For example, the balance-sheet number should be read with audit notes, revaluation reserves, related-party balances and debt obligations before drawing a conclusion. It matters because the number can influence eligibility, limit sizing, repayment comfort, leverage view and early-warning assessment. The common mistake is to use it mechanically; seasonality, accounting treatment, one-off items and data mismatches can change the credit interpretation.