Common-Size Financial Statement
A financial statement that expresses each line item as a percentage of a base figure, enabling comparison across companies and time periods.
What is Common-Size Statement?
A common-size financial statement converts all line items into percentages rather than reporting them in dollar amounts. For income statements, each item is expressed as a percentage of total revenue; for balance sheets, each item is expressed as a percentage of total assets. This standardization removes the effect of company size, making it straightforward to compare competitors of different scales or to track a single company's cost structure over time. Common-size analysis is particularly useful for identifying trends in margins, expense ratios, and capital structure changes that may be obscured in raw dollar figures.
Example
Apple's FY2024 income statement shows revenue of $391 billion. Expressing cost of sales as a percentage of revenue yields a gross margin of approximately 46.2%, and R&D expense as 7.8% of revenue — figures that can be directly benchmarked against Microsoft, regardless of the companies' different revenue scales.
Source: Apple 10-K FY2024 — SEC EDGAR