AIA Billing, short for American Institute of Architects billing, is a standardized method used in the construction industry to submit progress payments to the contractor. It involves the use of AIA forms, specifically the AIA G702 Application and Certificate for Payment and the AIA G703 Continuation Sheet, to document the work completed on a project and request payment for that work. This process helps to ensure that both the owner and the contractor are on the same page regarding the progress of the project and the amount owed for the work completed.AIA Billing is based on a percentage of completion method, where the contractor submits a payment application based on the percentage of work completed and the corresponding amount due. This allows for a transparent and organized way to track the progress