How to Write a Business Proposal: Structure, Sections, and the Prompts That Draft Each One
Most business proposals lose the deal on the first page. Not because the pricing is wrong or the team is weak, but because the document opens by talking about the seller instead of the buyer, while the reader has four other proposals on the desk.
A proposal is not a brochure and not a contract. It is an argument, structured so a decision-maker can follow it without reading every word, and so the person justifying the spend internally can lift the parts they need. Everything below is organized around that job.
What follows is the section-by-section structure that works across consulting, agency, software, and services deals, what each section has to accomplish, and a drafting prompt for each one. The prompts are written for any AI Document Generator and were tested in ImagineArt, though they are tool-agnostic and will work wherever you draft.
What a proposal is actually for
Three people will read your proposal, and they read differently. The economic buyer reads the executive summary and the price. The technical evaluator reads the scope and timeline. Your internal champion reads everything, because they must defend it in a meeting you will not attend.
Write for all three. That means the summary has to stand alone, the scope has to be specific enough to survive scrutiny, and the whole document has to be skimmable. A proposal that only makes sense when read start to finish is a proposal that will be read by one person and then misrepresented to everybody else.
It also means length is not a virtue. The strongest proposals we see run six to twelve pages. Anything longer usually indicates that the discovery conversation did not happen.
One more thing worth saying before the structure. A proposal is a summary of an agreement you have already reached in conversation, not the place where you reach it. If you are sending a proposal to a prospect you have never spoken with properly, the document is doing work it cannot do, and no amount of structure will fix that.
Section one: the cover
The cover carries the client’s name, your name, the date, and a one-line description of the engagement. That is all. A cover leading with your logo and a stock photograph tells the reader this document was not written for them.
Use the client’s name in the title. “Customer Retention Program for Northwind Logistics” outperforms “Proposal for Services” every time, because the first one is clearly bespoke and the second one is clearly a template.
Section two: the executive summary
This is the most important page and the one most often written worst. It must state the client’s problem, your proposed approach, the outcome you expect, the investment, and the timeline, in under 250 words. It must make sense to somebody who reads nothing else.
Write it last, once every other section exists, and write it in a single sitting so that the tone stays consistent. An executive summary assembled from sentences copied out of later sections always reads like an assembly.
Prompt: “Write a 200-word executive summary for a business proposal. The client is [company] in [industry]. Their problem is [problem]. Our approach is [approach]. Expected outcome is [outcome]. Investment is [amount] over [duration]. Lead with the client’s problem, not with our company. Plain language, no adjectives about ourselves.”
Section three: the problem statement
Here you demonstrate that you understood the discovery call. Restate the client’s situation in their own vocabulary, including details they would not expect you to remember, and quantify the cost of leaving it alone.
The test is simple. If the client reads this and thinks “yes, that is exactly it,” everything after it is easier. If they think “close enough,” you are now competing on price.
Prompt: “Write a problem statement for a client proposal, 250 words. Use these notes from the discovery call: [paste notes]. Describe the current situation, its business consequences, and what it costs them to do nothing. Use their terminology. Do not mention our solution.”
Section four: the proposed solution
Explain what you will do and why that approach rather than an alternative. The “why this approach” part is what separates a proposal from a price list, and it is the part most drafts skip.
Keep it conceptual. The detailed deliverables belong in the scope section, and mixing the two produces a section that is both too long and too vague.
Prompt: “Write the proposed solution section of a business proposal, 350 words. Our approach is [approach]. Explain the reasoning behind it, why it fits this client’s constraints of [constraints], and what alternative approaches we considered and set aside. Conceptual level only, no task lists.”
Section five: scope and deliverables
This section protects both parties and should be written as if a dispute is possible, because sometimes one is. List every deliverable as a concrete artifact with a format. “Brand guidelines” is not a deliverable. “A 20-page brand guidelines document delivered as a PDF, with two rounds of revisions” is.
Include an explicit exclusions list. Naming what is excluded feels adversarial as you write it and saves the relationship six months later. This is also the section where a good AI Document Generator earns its place, because it will produce an exhaustive first draft from your notes far faster than you will write one from memory.
Prompt: “Convert these engagement notes into a deliverables list: [paste notes]. For each deliverable give a name, a format, a quantity, and an acceptance criterion. Then write a short exclusions list covering work a client might reasonably assume is included but is not.”
Section six: the timeline
Give phases, not dates, unless the dates are already agreed. Each phase needs a name, a duration, the deliverables it produces, and what you need from the client to start it. That last element is the one that gets omitted, and the one that causes every slipped deadline.
Prompt: “Build a project timeline from these deliverables: [paste]. Organize into phases. For each phase give a name, duration in weeks, the deliverables completed, and the client inputs required before the phase can begin. Present as a list, not a chart.”
Section seven: pricing
Present price as investment against outcome, place it immediately after the value is established, and never bury it in an appendix. Buyers who cannot find the price assume it is hidden because it is bad.
Offer two or three options rather than one number. A single price invites a yes or no; three options invite a discussion about which, which is a far better conversation to be having. Make the middle option the one you want them to choose and the top option genuinely aspirational.
State the payment schedule here as well, not in the terms section. When the money is due is a commercial question, and a buyer who has to hunt for it will assume the answer is unfavorable.
Prompt: “Create three pricing tiers for this engagement: [describe scope]. Label them by outcome rather than by size. For each, list what is included, what is excluded, and who it suits. Target price points are [amounts].”
Section eight: proof and team
Two case studies maximum, both chosen for similarity to this client’s situation rather than for prestige. Each should follow the same shape: the situation, what you did, the measurable result, and one line of client comment if you have permission.
Relevance beats scale in both directions. A small client will not be reassured by an enterprise logo they cannot relate to, and an enterprise buyer will not be reassured by a case study from a company a hundredth of their size. Choose for resemblance.
Name the people who will actually do the work, with a sentence on relevant experience. Generic agency bios are noise. Clients are buying a team, and a proposal that hides the team behind a company description reads as though the work will be handed to whoever is free.
Section nine: terms and next steps
Close with payment terms, validity period, and a single explicit next action with a date. “Please let us know if you have questions” is not a next step. “We will call on the 14th to walk through this, or reply to this email to confirm sooner” is.
Keep the legal terms short here and reference the full agreement separately. A proposal that reads like a contract stops being persuasive, and a contract buried inside a proposal is rarely read properly by either side.
The deck that goes with it
Most proposals over a certain size get presented as well as sent, and the deck is not the document with slide breaks. It is the argument compressed to eight or ten slides: problem, cost of inaction, approach, scope summary, timeline, price, proof, next step.
Build the deck from the proposal rather than in parallel, or the two will diverge and somebody will notice. A Free AI Slides Maker such as ImagineArt will take the finished document and produce the compressed version in minutes, which is the right order of operations. Writing the deck first almost always produces a shallower proposal, because slide logic rewards brevity over reasoning.
Keep the deck to the same structure as the document so that a reader who has both can move between them. If a slide exists that has no corresponding section, either the section is missing or the slide is.
One caution: whatever you generate, rewrite the headlines yourself. Automatically generated slide titles describe the content of the slide rather than making a claim, and a deck whose headlines make no argument is a deck nobody remembers.
Formatting that gets read
Use informative headings so the document can be skimmed by heading alone. Keep paragraphs to four lines. Put every number that matters in its own line rather than inside a sentence. Left-align body text and resist the urge to justify it, because justified text in a narrow column creates rivers of whitespace that make documents tiring to read.
Send a PDF, always, with the client’s name in the filename. Export it directly from your AI Document Generator rather than printing from a word processor, because that conversion step is where most broken tables and shifted headings appear. A file called “Proposal_v4_final_FINAL.docx” undermines a week of work in the two seconds it takes to read the file name.
Common mistakes
The most common is writing about yourself first. Count the words before the first mention of the client; if it is over fifty, restructure.
The second is vague deliverables, which feel flexible at signing and become expensive at delivery. The third is a missing exclusions list. The fourth is a proposal sent without a scheduled conversation to walk through it, which turns a persuasive document into one that has to persuade alone.
The fifth is inconsistency between artifacts, which is why the deck should come out of the finished document through a Free AI Slides Maker rather than being written separately.
The sixth is over-generation. Tools make it easy to produce twenty pages when eight would win. Length signals effort to the writer and padding to the reader. Every section above earns its place; anything beyond them should be an appendix or should be cut.
Putting it together
Draft section by section rather than asking for a whole proposal in one pass. Every complete-document generation we have tested produces a plausible shape with hollow specifics, because the model must invent details you never supplied. Feeding it real discovery notes one section at a time produces something you can actually send.
Run the sections through an AI Document Generator in the order above, edit each before moving on, then generate the deck last with a Free AI Slides Maker so both artifacts say the same thing. We use ImagineArt for both halves of that workflow, which keeps the document and the deck in one place rather than in two tools that quietly drift apart.
