Unclassified balance sheet definition including break down of areas in the definition. Analyzing the definition of key term often provides more insight about concepts. Unclassified balance sheet can be defined as: Balance sheet that broadly groups assets, liabilities, and equity accounts. Unclassified balance sheet is less common then a balance sheet for that breaks the information into more categories, but an unclassified balance sheet can be more simplified and provide a good overview. An unclassified balance sheet will not include categories such as current assets and current liabilities, categories common in most balance sheet formats.