Financial modeling is a vital tool for strategic business planning, enabling accurate forecasting and valuation. It begins with defining objectives, collecting historical data, and making realistic assumptions about revenue, margins, and expenses. By developing key drivers and multiple scenarios, businesses can evaluate different outcomes and risks. Using valuation methods like discounted cash flow (DCF) and comparables helps determine fair value. Sensitivity analysis on critical factors such as discount rate and terminal value ensures reliability. Transparent documentation and clear communication of results empower decision-makers, highlight potential risks, and strengthen overall financial strategy for sustainable business growth.