There are several types of financial models used in financial analysis and decision-making. Some of them are:

1. Valuation models: These models are used to determine the worth of a company or an investment opportunity. They include discounted cash flow models, price-to-earnings models, and dividend discount models.

2. Budget models: These models are used to plan and manage budgets. They include cash budget models, operating budget models, and capital budget models.

3. Forecasting models: These models are used to predict future financial conditions. They include time series analysis, regression analysis, and exponential smoothing models.

4. Risk models: These models are used to assess risks associated with investment opportunities. They include statistical models, simulation models, and decision trees.

5. Sensitivity analysis models: These models are used to test the impact of changes in inputs or assumptions on financial outcomes. They include scenario analysis models, stress testing, and sensitivity tables.

Financial models are essential tools in financial analysis and decision-making as they provide a structured and quantitative framework to quantify the impact of different assumptions and inputs on financial outcomes. They allow decision-makers to make informed decisions based on fact-based analysis, which ultimately helps in achieving better outcomes.