Consistency

tl;drA fundamental accounting principle requiring that once an entity adopts an accounting method or procedure, it should continue using that method for similar transactions and events unless there is a justified reason for change.

This principle enables meaningful comparisons of financial statements across different periods and enhances their reliability and usefulness for decision-making. Consider a manufacturing company that uses straight-line depreciation for its production equipment. Under the consistency principle, they should continue using this method for similar assets unless circumstances justify a change. If they switch to declining balance depreciation, they must disclose the change, explain its rationale, and quantify its impact on financial statements. Maintaining consistency requires systematic documentation of accounting policies and procedures. When changes are necessary, organizations must evaluate their impact, provide proper disclosures, and ensure comparability of financial information.