There's no hard and fast rule about the length of a consulting proposal. However, it needs to include a cover page, executive summary, scope of work, deliverables, timeline, fees and payment terms, client requirements, and expiration date. We suggest creating a proposal that reflects your brand and, simultaneously, is customized for a client. For example, if you're helping consult with a business owner you've worked with before, the proposal can be simple. Whereas if you're pitching a corporation for the first time, you might want to add some extra details.