The FNA uses information and insights developed throughout the national BIOFIN Process. The FNA builds on and should be compatible with the national planning and budgeting practices and approaches that have been identified in the PIR (Chapter 3). The process also relies on the analysis of the NBSAP and other strategic national documents, strategies and priorities assessed in the PIR. The FNA helps refine and apply the system used for categorizing, attributing and tagging expenditures in the BER (Chapter 4), where possible. A sound process for estimating biodiversity finance needs, allowing comparisons of specific finance needs with available resources, can guide the prioritization, development and implementation of sound finance solutions in the BFP (Chapter 6).