…until the proposal is submitted.
Evolve the content, form and detail in your Executive Summary until the proposal is submitted.
Many people have been told their executive summary should be a one-page document prepared after the proposal is written. This is unhelpful advice as executive summaries are the most important pages in your proposal.
Your draft executive summary should be prepared early – during the capture planning or pursuit phase, well before the RFT, providing a roadmap for capture.