Which of the following is NOT a method for recognizing revenue based on progress?

The completion method is not a recognized method for recognizing revenue based on progress under the relevant accounting standards. Instead, the recognized methods—specifically the output method and the input method—focus on measuring progress in a more systematic way based on either the results achieved (outputs) or the resources consumed (inputs) during the contract term.

The output method recognizes revenue based on specific milestones or deliverables completed, such as units produced or services rendered. This method aligns revenue recognition with the value generated for the customer, making it practical for contracts that have tangible outputs.

The input method accounts for how much work has been completed towards fulfilling a contract, usually measured by resources used or incurred costs. This method is useful in contracts where inputs are a reliable measure of performance towards fulfilling the contract's obligations.

Percentage recognition typically refers to recognizing revenue based on the percentage of completion, utilized interchangeably with the output and input methods. However, it does not stand alone as a distinct method.

In summary, the completion method does not fit within the frameworks of recognizing revenue based on progress as it refers specifically to recognizing revenue only when a project is finished, diverging from how progress-based recognition typically functions.