Most business owners carry a rough estimate of what their company is worth, but that mental number is not a valuation, and the gap between the two can be costly. A formal, methodology-based business valuation is required in a wide range of situations, including selling or transferring a business, estate planning, lending, divorce, equity compensation, and shareholder disputes. Working with a credentialed valuator and involving your CPA early ensures the resulting number is defensible when it matters most.