A seven-figure deal gets decided by a group of people who read your proposal on their own time, compare it to others and argue about it in meetings you'll never see. Learning how to write a winning proposal for that kind of deal means building every section for those readers.
Why big deals need a different proposal
Most proposal advice is built for smaller deals. Proposify, which sells proposal software, reports an average won deal of $16,388 across the 742,137 proposals sent through its platform in 2025. That's a useful number, because it tells you where most proposal templates and tips come from. They're tuned for deals one person can approve.
The same report lists the sections that show up most in winning proposals. A cover, an executive summary, the approach or solution, deliverables and timeline, the team, pricing, and terms with next steps. Winners averaged seven sections.
Our read is that the skeleton holds up at any size. What changes on a big deal is how much each section has to carry and who it's written for. Here's how we think about each part.
The cover
The cover should tell the buyer what they're getting in one line. Their company name, the outcome you're proposing and the date. A line like "One rollout plan for all three regions, live by June" does more than a logo and the word Proposal.
On a big deal, the cover also sets the tone for everyone who opens the link after it's been forwarded. It's the first thing the CFO sees. Make it look like it was made for them, because it was.
The executive summary
This is the most important page in the proposal, and it should be written last. Some readers will only read this page. It needs the problem, the plan, the investment and why you, in plain language, on one page.
In our experience, the best executive summaries read like a short note from someone who understands the buyer's business. Leave out the company history and the mission statement. Give a clear account of what the buyer is trying to fix and how you'll fix it.
The problem, in their words
Before you explain your plan, show the buyer you understand what they're up against. Use their language from the discovery calls. Name the cost of the problem if they shared it, and the deadline if there is one.
This section is where a proposal starts to feel custom. A buyer can tell in a paragraph whether they're reading something built for them or something with their name pasted in.
The plan
Explain what you'll do in the order you'll do it. Break it into phases with names a non-specialist can follow. For each phase, say what happens, what the buyer gets and what you'll need from their team.
Specifics build trust here. A vague plan makes a buyer wonder whether you've done this before. A plan with real steps, owners and handoffs reads as experience.
The timeline
Show the timeline as a timeline. A visual with phases, milestones and dates is easier to follow than a paragraph, and it's the page operations will come back to most.
Be honest about what depends on the buyer. If the start date hinges on their legal review or their data being ready, say so. Buyers trust a timeline more when it admits what could move it.
A chapter for each person who signs off
This is the section most proposals skip, and on a seven-figure deal it matters most. Every person who signs off is reading for something different. Finance is reading for cost, payment terms and risk. Operations is reading for the lift on their team. IT or security is reading for how it connects and what it touches. Legal is reading for terms.
Give each of them a short, clearly labeled section that answers their questions directly. Your champion shouldn't have to translate your proposal for the rest of the committee. Proposify's 2026 data adds weight here. When more than one stakeholder viewed a proposal, the close rate rose 20 percent. Our read is that you should plan for those extra readers and write for them on purpose.
The team and the proof
Introduce the people who'll do the work, with a line on what each one owns. Then show proof that matches this buyer. One case study from a similar company with a similar problem beats five from unrelated industries.
Keep this section tight. It's there to answer whether you can do it, and a couple of strong examples answer that better than a long list of logos.
The price
Show the investment in a way that's easy to understand and easy to compare. Group it into a few clear parts, show what's included in each and give the total over the full term. If you offer options, put them side by side so the buyer can choose without emailing you to ask.
Pricing is the page buyers check first, and the rest of the proposal decides how that number feels. We go further on this in How to Present Pricing in a Proposal Without Losing the Buyer.
Next steps and terms
End with exactly what happens if they say yes. Who signs, what you'll need, when work starts and the first milestone. Put the terms in plain language and keep them short. A proposal that ends with a clear next step and a date gives the buyer something to act on.
The PDF still matters
On big deals, someone will want a PDF. Procurement may need to upload it to a portal. Legal may want a fixed version for the file. A board member may want to print it. Our read is that a live web proposal is the better reading experience for most of the committee, and a matching PDF covers everyone else. Send both.
Putting it together
If you're wondering how to write a winning proposal for a deal this size, the answer is mostly discipline. Use the standard sections, then make every one of them work harder. Lead with the buyer's problem. Make the plan specific. Write for every reader on the committee. Make the price easy to understand. End with a next step.
That's the work we do at Closewell, one proposal for one deal at a time. If you've got a big one coming up, start a proposal, or look at how we've built sample proposals for deals like yours.
