Which principle requires accounting methods and procedures to be applied uniformly from period to period to achieve comparability?

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The idea being tested is that accounting methods should be applied in the same way from one period to the next so financial statements can be compared over time. This consistency allows users to observe true trends in earnings, assets, and other measures without being misled by changing formulas or approaches. When a method is kept uniform, it gives a stable basis for evaluating performance year after year, which is exactly what comparability relies on. If a change is really necessary, it should be disclosed and handled according to rules so readers can understand how the new method affects prior results.

This is why the principle described is the Consistency Principle. It focuses on keeping practices stable across periods to enable meaningful comparisons. The other principles address different ideas: the Matching Principle concerns pairing expenses with the revenues they help to generate in the same period; the Cost Principle requires assets to be recorded at their original cost; the Objectivity Principle emphasizes using unbiased, verifiable evidence.