Strong business proposals are backed by solid research and evidence. Including data shows that you understand the market, the competition, and the client’s industry.

Use statistics, surveys, and case studies to support your claims. For instance, citing market trends or previous success stories can demonstrate credibility. However, don’t overload the proposal with numbers — use visuals like graphs and charts for clarity.

Incorporating accurate data not only adds authority but also makes your proposal more convincing to analytical decision-makers.