What Is Proposal Writing: Types of Proposals, Solicited vs Unsolicited, and How to Write One That Wins

Proposal writing is the skill of putting an offer in writing so that a reader can understand it, trust it and say yes. A proposal explains a problem, describes how you will solve it, states the cost and time, and asks for a decision. So what is proposal writing in practice? It is persuasive, structured business writing used to win projects, contracts, jobs, funding and sponsors.

This article explains what a proposal is in writing, the main types of proposals, the difference between solicited and unsolicited proposals, the parts every proposal needs, and a simple process to write one. It ends with a short sample, common mistakes and answers to common questions.

What is a proposal in writing?

A proposal in writing is a document or message that offers a solution to a specific need and asks for approval. The reader might be a customer, a manager, a funder, a committee or a hiring client. The writer might be a freelancer, a company or an individual.

Every proposal answers the same questions for the reader:

• What problem or goal are we talking about?
• What exactly will you do?
• How long will it take?
• How much will it cost?
• Why should we choose you?
• What do we do next?

A proposal is different from a report. A report describes what happened. A proposal describes what you suggest will happen, and it tries to move the reader to act. That is why clear structure and honest evidence matter more than fancy words.

Why does proposal writing matter?

Most professional work starts with a proposal, even when it is only a short message. A clear proposal does several jobs at once.

• It wins work. Buyers compare options. The one that is clearest and most relevant is easier to choose.
• It prevents misunderstandings. Putting scope, price and timeline in writing reduces arguments later.
• It saves time. A good structure means fewer back-and-forth emails.
• It shows how you think. The way you break down a problem tells the client how you will work.
• It supports decisions inside the client’s team. A written proposal can be forwarded to people who never met you.

To check your own drafts against a clear standard, read what makes a good proposal.

What are the main types of proposals?

Proposals come in many forms. The names differ by industry, but most fit into the groups below.

Type	Who writes it	Purpose	Typical length
Business or service proposal	Agencies, consultants, freelancers	Win a client project	2 to 10 pages
Freelance job proposal	Freelancers on job platforms	Win a posted job	Short message
Project proposal	Teams and managers	Get approval and budget for a project	3 to 15 pages
Grant proposal	Nonprofits, researchers, schools	Win funding	As the funder requires
Sponsorship proposal	Event and community organizers	Win a sponsor	2 to 6 pages
Bid or tender response	Contractors and suppliers	Win a contract against competitors	As the buyer requires
Research proposal	Students and researchers	Get a study approved	Varies by institution
Policy proposal	Analysts, public staff, advocates	Recommend a change	Varies
Job proposal for a new position	Employees and managers	Create a new role	1 to 3 pages

Specific guides: how to write a bid, how to write a tender, how to write a sponsorship proposal, what a policy proposal is and how to write a proposal for a new position.

What is the difference between solicited and unsolicited proposals?

This is one of the most important ideas in proposal writing, because it changes how you write.

A solicited proposal is requested by the reader. The client posts a job, issues a request for proposal (RFP), or asks you to send a quote. They have already decided they need help, and they have told you what they want.

An unsolicited proposal is sent without a request. You spot a problem or an opportunity and pitch a solution before the client asks.

Point	Solicited	Unsolicited
Who starts it	The client	You
Does the client know the need?	Yes, and they described it	Not always; you must show it
Competition	Often several bidders	Often none, if you are first
Rules to follow	The client’s format and questions	Your own structure
Main challenge	Stand out among many	Get attention and prove the need
Best opening	Mirror the request	Name the problem you noticed
Examples	Upwork job reply, RFP response	Cold pitch, new-position idea

How do you write a solicited proposal?

Read the request closely and answer exactly what was asked, in the order asked. Use the client’s own words. If there are required forms, page limits or questions, follow them to the letter. In formal procurement, missing a rule can disqualify you.

How do you write an unsolicited proposal?

Start with the problem, backed by something you observed, and keep it short. A reader who did not ask for your message needs a quick reason to keep reading. Offer one clear idea, show proof and ask for a small next step such as a short call.

How is a proposal different from a quote, bid or business plan?

These words are often mixed up. Here is how they usually differ, though local and industry usage varies.

Document	Main purpose	Contains	Persuasion level
Proposal	Persuade and explain	Problem, approach, plan, price, proof	High
Quote	State a price for defined work	Items, prices, terms	Low
Bid	Compete for a contract	Price and conditions, often fixed format	Medium
Business plan	Guide a business and attract investors	Market, strategy, finances	High, but about the business
Statement of work	Define agreed work	Scope, deliverables, schedule	Low; it is a working agreement

See how to send a quote to a client and what SOW stands for in business for the two documents closest to a proposal.

What parts does a proposal include?

Not every proposal needs every part, but this list covers what most readers expect. Short proposals can combine several parts into a few lines.

1. Summary: a short overview of the problem, your solution and the result.
2. Problem or goal: what the client needs, in their words.
3. Solution and approach: what you will do and how.
4. Deliverables: what the client gets at the end.
5. Timeline: start date, milestones and delivery.
6. Price and terms: cost, payment schedule and what is not included.
7. Proof: relevant samples, past work or credentials.
8. Next steps: how the client says yes.

For layout and detail, see how to do a proposal for a job and how to make a proposal letter.

How do you write a proposal in 8 steps?

1. Understand the reader. Find out who decides, what they care about and what they already tried. Read any brief or job post twice.
2. Define the problem in one sentence. If you cannot, ask a question before you write.
3. Choose your solution. Pick the approach that fits their budget, time and risk level.
4. List the deliverables. Make each one a thing the client can see or use.
5. Build the timeline and price. Be realistic. Add what is not included.
6. Select the proof. Use one or two examples close to the client’s case.
7. Write it plainly. Short sentences, active verbs, headings, lists and a small table for price or schedule.
8. Edit and send. Check names, numbers and the client’s rules, and finish with one clear next step.

The first two steps matter most. Many weak proposals are well written but answer the wrong question.

What does a short proposal look like?

This is a sample for a made-up request. It is an illustration only, not a real client or result.

Sample

Subject: Proposal to update your product pages before your launch

Hi Dana, you asked for help rewriting 20 product pages before the launch on the 15th.

What I will do: review your top five pages, agree a style with you, then rewrite the rest in two batches.

What you get: 20 edited pages in a shared document, with notes on what changed.

Timeline: first batch in five days, second batch in ten days.

Price: a fixed fee for the full set, half at the start and half on delivery. New pages beyond the 20 are quoted separately.

Proof: I can send a before-and-after of a similar page set, with private details removed.

If this fits, reply with a yes and I will start tomorrow.

The sample has a clear problem, plan, deliverable, timeline, price with limits, proof and next step, in under 150 words.

What skills make a strong proposal writer?

• Listening. Strong proposals begin with careful reading and good questions.
• Clear structure. You lead the reader through problem, plan and price without making them hunt.
• Plain language. Short words and short sentences win over jargon.
• Honest estimating. You know how long things take and say so.
• Evidence. You choose proof that matches the case.
• Editing. You cut what the reader does not need.
• Follow-through. You follow up politely and track what works.

Some people do this as a full-time job. Roles such as proposal manager, bid writer and grant writer exist in many companies and nonprofits. If grants interest you, read what grant writers do.

How does proposal writing work for freelancers?

On a freelance platform like Upwork, a proposal is a short message sent in reply to a job post, often with a price and a few screening answers. It is a solicited proposal, so the best ones mirror the job post, suggest a first step, attach one relevant sample and ask one question. Check the Upwork Help Center for current rules on what you can include and how Connects work.

Because clients compare many replies, personal and specific messages stand out. Learn the format in how to write Upwork proposals, see examples in Upwork proposal samples that win and find out what each reply costs in Upwork Connects cost explained. A strong profile helps too; see how to build a freelance portfolio.

What mistakes should you avoid?

• Starting with yourself. Begin with the client’s problem.
• Using one template for everyone. Readers notice copy-paste text.
• Hiding price or scope. Unclear terms cause doubt and disputes.
• Promising too much. Overpromising damages trust and creates risk for you.
• Ignoring the rules. For formal requests, a missed instruction can mean rejection.
• Writing too long. See how long a proposal should be.
• Adding no proof. Claims without examples are easy to ignore.
• Forgetting the next step. Tell the reader exactly how to accept.

Frequently asked questions

What is proposal writing in simple words?

It is writing an offer so clearly that the reader can approve it. You explain the problem, your plan, the cost and the time.

What is a proposal in writing?

It is a written document or message that suggests a solution and asks for a decision, such as hiring you, funding a project or approving a plan.

What are the types of proposals?

Common types are business or service proposals, freelance job proposals, project proposals, grant proposals, sponsorship proposals, bids and tenders, research proposals and policy proposals.

What is the difference between solicited and unsolicited proposals?

A solicited proposal answers a request from the client. An unsolicited proposal is sent without a request and must first show that the need exists.

What are the main parts of a proposal?

Summary, problem, solution, deliverables, timeline, price and terms, proof and next steps.

Is a proposal legally binding?

Not by itself in most cases, but terms can become binding once accepted, depending on the wording and local law. For anything important, ask a qualified professional.

How long should a proposal be?

It depends on the type. A freelance proposal may be a short message, while a formal bid may be many pages. Follow any stated limit.

Can I learn proposal writing without experience?

Yes. Practice on real requests, study good samples, ask for feedback and track which proposals get replies.

Conclusion

Proposal writing is a practical skill: understand the reader, define the problem, offer a clear plan with a price and time, back it up with proof and make the next step easy. Whether you write a short freelance reply or a formal bid, the same logic applies.

Your action list:

1. Decide whether your proposal is solicited or unsolicited.
2. Read the request or research the reader before writing.
3. Write the problem in one sentence.
4. List deliverables, timeline and price, including what is not covered.
5. Add one or two matching proof points.
6. Edit for length and clarity, then end with one next step.

Writing proposals every week? See how BidStaff works and keep your tone consistent.

Other related articles

• What makes a good proposal
• How long should a proposal be
• How to write Upwork proposals
• How to find freelance clients
• Freelance tips

About the Author

Muhammad Shahzad is the founder of BidStaff and Leadslancer. He runs Upwork accounts for a freelance and agency team, and builds BidStaff around that daily work. Editorial note: This article is written from hands-on proposal work and reviewed before publishing; it is general information, not legal or financial advice.