Seven steps, a full outline and an example structure for proposals that get signed
To write a proposal, learn the client's problem, agree what success looks like, then set out your solution, scope, timeline, price, terms and one clear next step. A business proposal is a written offer that explains why your approach is the right answer to the client's situation, not only what it costs. That is the difference from a quote, which prices a job the client has already defined. Proposals are either solicited, when a client asks for one or issues a request for proposal (RFP), or unsolicited, when you pitch an idea yourself. Below are seven steps, a full proposal outline in the order clients read it, an example structure for a fictional agency, guidance on format and length, what changes for an RFP, and the mistakes that lose proposals.
What is a business proposal, and when do you need one instead of a quote?
Send a quote when the client knows what they want and only needs a price, such as repainting three rooms or supplying 200 units. Send a proposal when the client is still choosing between approaches, when several people decide together, or when the work runs over weeks or months. A proposal still contains a price, but it builds the case first: the situation, the goal, your plan and the proof that you can deliver. Many service businesses use both, a proposal to win the first project and quotes for additions later. Keep in mind what happens when the client says yes. In US law, the acceptance of a valid offer creates a binding contract, and the person who made the offer can generally withdraw it only before it is accepted (Cornell Legal Information Institute, Wex: offer). So promise only what you can deliver, and give every proposal an expiry date.
A quote answers "how much?". A proposal answers "why this approach, why you, and how much?"
Solicited proposal: the client asked for it, often with a brief or an RFP that fixes the structure
Unsolicited proposal: you spotted the need yourself, so the first page must show that the problem is real and costly
How do you write a proposal? Steps 1 to 3: prepare before you write
Most proposals are won or lost before the first sentence. The preparation below takes an hour or two, and it gives you the material for every later section. Skip it and you end up writing about yourself, because you know too little about the client.
Step 1, understand the client: hold a discovery call or meeting and write down the answers. What is going wrong, or what does the client want to achieve? What does the problem cost now, in money, time or customers? What are the deadline and the budget range? Who decides, and how will they compare offers?
Step 2, define the objective: turn what you heard into one measurable result with a date, in the client's own terms, such as "half of all new patient bookings made online by April". Check it with the client before you write. If they disagree, you have just saved yourself a lost proposal
Step 3, design the solution and the scope: decide what you will deliver, in phases if the work is large, with a result per phase that the client can check. Write down what is out of scope and which assumptions your price rests on, such as the client supplying content or giving access to a system
How do you write a proposal? Steps 4 to 7: write, price and send
With the preparation done, the writing goes quickly. Work in this order, because each step feeds the next one.
Step 4, plan the timeline and the price: use dates, not durations, and connect them to the client's deadline. Present the price as a table with one line per deliverable, a subtotal, tax and a total. For UK business clients, show VAT separately. The standard rate of 20% applies to most goods and services (GOV.UK, VAT rates). The US has no VAT, so add sales tax only where it applies. Two or three options, or optional lines, let the client choose between your options rather than between you and a competitor
Step 5, write the body: open with the client's situation in their words and numbers, then the objective, your approach and scope, the timeline, proof such as a comparable project, the investment and the terms
Step 6, write the executive summary last: once scope and price are final, summarise the problem, the solution, the result, the price and the next step on one page. It is the page decision-makers read first, and often the only one they read closely
Step 7, check, send and follow up: check every name, date and figure, and make sure the price in the summary matches the pricing table. Send the proposal as a PDF or a link with a short cover email. Follow up after two or three working days and again a week before it expires. Proposal software such as Proposal Expert shows you when the client opens the proposal and lets the client accept it with an electronic signature
What is the proposal outline? The sections in order
This proposal outline follows the order in which a client reads and decides. The core sections appear in almost every business proposal. The optional ones depend on the size of the job and on what the client asked for. For a smaller project, merge sections rather than dropping the price, the terms or the next step.
Cover page: a title that names the result, the client's name, your business, a reference number, the date and a valid-until date
Cover letter (optional): a short personal note to the decision-maker, useful for unsolicited proposals
Executive summary: one page with the problem, solution, result, price and next step
The client's situation: background and problem, with the client's own figures
Objectives: one to three measurable results with dates
Approach and scope: what you will do and deliver, phase by phase, and what is not included
Timeline and milestones: dates for each phase and for the decisions the client must make
Team and proof (optional for small jobs): who does the work, one comparable project, relevant qualifications or guarantees
Investment: a pricing table with options, tax shown separately and the total
Terms: validity, payment schedule, how changes are priced, who owns the work and how either side can end the agreement
Next step and acceptance: one action with a date, and a place to sign
Appendices (optional): detailed specifications, plans, CVs or a statement of work
What does a business proposal example look like? An example structure
Here is the outline filled in, briefly, for a fictional case. Northgate Digital, a small web agency, proposes a new website with online booking to Harbour Physio, a physiotherapy practice with three clinics. All names and figures are illustrative. For a complete document with every section written out and a pricing table, use the business proposal template. The project proposal and statement of work templates apply the same logic to internal projects and to detailed scopes.
Cover: "Proposal: a website with online booking for Harbour Physio". Reference PRO-2026-031, dated 1 October 2026, valid until 31 October 2026
Executive summary: "All bookings now come in by phone, and your reception team spends most mornings answering calls. We propose a new website with online booking for all three clinics, live on 1 February 2027. The total investment is £20,040 including VAT. If you approve by 15 October, we start on 26 October."
Situation: booking by phone only, missed calls at peak times, and a website that is hard to use on a phone
Objective: at least half of all new patient bookings made online by the end of April 2027
Approach and scope: discovery workshop, design of eight page templates, build with a booking system integration, content migration and staff training. Not included: copywriting for new pages and paid advertising
Timeline: workshop in the week of 26 October, design approval by 20 November, test version on 11 January 2027, launch on 1 February 2027
Investment: design and build £14,500, booking integration, content migration and training £2,200. Subtotal £16,700, VAT at 20% £3,340, total £20,040. Optional: a care plan at £180 a month plus VAT
Terms: 50% on signing, 30% on design approval and 20% on launch, each invoice payable within 14 days. Changes to the agreed scope are quoted separately before work starts
Next step: sign the proposal by 15 October to secure the October start
For a US client, the same structure works in dollars. There is no VAT line, and sales tax is added only where it applies
What format and length should a proposal have?
Use a format the client can read in one sitting and forward without explanation. Short paragraphs, headings that follow the outline, one pricing table and plain words work better than long blocks of text and jargon. Write to the client as "you" and about your business as "we", and keep the client at the centre of most sentences. Send a PDF or a web link rather than an editable file, so the figures cannot change by accident. As a guide to length:
Small, well-defined jobs: one or two pages, or a quote instead
Service contracts and projects: usually 3 to 10 pages, plus appendices
Large or public tenders: whatever the buyer asks for. A page or word limit in an RFP always wins
A quick test: the person who signs should find the problem, the price and the next step within a minute
How do you write a proposal in response to an RFP?
When a client issues a request for proposal (RFP), or in the UK public sector more often an invitation to tender (ITT), the structure is no longer yours to choose. The buyer scores each response against criteria it publishes in advance. For US federal contracts, the Federal Acquisition Regulation requires all factors and significant subfactors that affect the award, and their relative importance, to be stated clearly in the solicitation (FAR 15.304(d)). In the UK, section 23 of the Procurement Act 2023 requires a contracting authority to describe how tenders will be assessed against its award criteria and to indicate their relative importance, for example by percentage weighting or by ranking. Use that to your advantage.
Follow the buyer's structure, headings and numbering exactly, even where your own outline differs
Answer each criterion in the buyer's words, and give the most heavily weighted ones the most space
Keep a compliance checklist of every requirement and note where your response answers it
Put the price where the buyer wants it. If a separate price schedule is required, keep prices out of the main text and make sure all figures match
Submit before the deadline, in the requested format and file type
What are the most common proposal mistakes?
Most losing proposals fail on the same few points, and every one of them can be fixed before you press send.
Opening with your company history instead of the client's problem
A reused proposal with the previous client's name, figures or dates still in it
Describing activities ("we will hold workshops") instead of results the client can check
No scope limits, so every extra request turns into a discussion about what was included
A price that is hard to find, or that differs between the summary and the pricing table
Only one option, which turns the decision into a plain yes or no
No expiry date and no next step, so the proposal sits in an inbox
No follow-up after sending
Frequently asked questions
What are the main parts of a proposal?
Most business proposals have seven core parts: the client's situation, the objective, the approach and scope, the timeline, the investment, the terms and the next step. Longer proposals add a cover page, an executive summary, a team and proof section and appendices. Whatever you leave out, keep the price, the terms and the next step.
How long should a business proposal be?
As long as the decision needs and no longer. A small, defined job fits on one or two pages, and a service contract or project usually needs three to ten pages plus appendices. If an RFP sets a page or word limit, stay within it. Put detail that only some readers need, such as specifications or CVs, in appendices.
How do you start a proposal?
Start with the client, not with yourself. The first lines should show that you understand the client's situation, ideally with a figure or a deadline the client gave you, followed by the result they want. Company history, awards and team profiles belong later, as proof. In a longer proposal, this opening is the executive summary.
Is a business proposal legally binding?
It can be. If your proposal contains a clear offer, the client's acceptance can turn it into a contract. The Cornell Legal Information Institute explains that the acceptance of a valid offer creates a binding contract, and that an offer can generally be withdrawn before it is accepted. That is why a proposal should state its validity date, the scope, the exclusions and the terms. For large or unusual projects, have your terms checked by a lawyer.
Can a client sign a proposal electronically?
Yes, for most business proposals. In the US, the federal ESIGN Act says that a signature or contract relating to a transaction in interstate or foreign commerce may not be denied legal effect solely because it is in electronic form (15 U.S.C. section 7001). For England and Wales, the Law Commission concluded in 2019 that an electronic signature is capable in law of being used to execute a document, provided the person signing intends to authenticate it and any formalities are met. Proposal Expert uses an eIDAS simple electronic signature with a trusted timestamp and a sealed audit trail.