Proposal software affects residential AV project profitability by closing the gaps where money quietly disappears, such as mispriced products, underestimated labor, duplicate data entry, slow proposal turnaround, and unbilled change orders. Integrators using an end-to-end proposal, project management, and procurement platform report an average 13% profit increase, and the top adopters see profit gains of 30% or more, according to D-Tools’ 2025 research.