How Do I Write a Business Proposal for a Customer?

By Bill Stilwell · Last reviewed October 17, 2026

The short answer

A proposal explains the customer’s problem, recommends a solution, and states the business terms: scope, price, timeline, payment, and how to accept. Use one when the customer needs help choosing, not just a price. Every claim in it must be true and backed by evidence, the same as an ad, and its terms should match your service agreement.

What this means

An estimate answers “how much?” A proposal answers “what should we do, and why?” It’s common for business clients, larger projects, and work with options.

A good proposal usually has:

The problem in the customer’s words. Shows you listened.
Your recommendation. What you’ll do and why it fits.
Options, if useful. For example, a basic, standard, and full package. Two or four options work too.
Scope. What’s included and excluded (see 11.1.4 Scope of Work).
Timeline.
Price and payment terms (see 11.1.6 Payment Terms).
Proof. Relevant examples, credentials, or reviews you have permission to use.
Terms. A link to or copy of your service agreement (see 11.1.1 Service Agreement).
Expiration date and acceptance step.

Made-up example: Cedar Lane Marketing meets a dental office that wants more new-patient calls. Its proposal restates the goal, recommends a Google Business Profile cleanup plus three service pages, offers two package options, lists what’s not included, gives a six-week timeline, shows the price with a 50% deposit, and links to its agreement. It does not promise a ranking or a number of calls.

The Federal Trade Commission (FTC) says advertising must be truthful and not deceptive, and that you need evidence to back up your claims before you make them. That standard is a good rule for proposals too. Don’t promise rankings, results, or savings you can’t support (see 11.3.1 Truthful Advertising Claims).

Why it matters

A clear proposal helps customers say yes because they understand the plan.
Overpromising leads to disputes, refund requests, and bad reviews.
Unclear terms can turn into a fight over what the customer “bought.”
Proposals often become part of the contract. Your attorney can tell you how yours works.

Who this applies to

Businesses that sell projects, packages, or recurring services where the customer must choose. Simple, fixed-price jobs may only need an estimate (see 11.1.2 Estimate).

How to do it

Ask questions first. Write down the customer’s goal, budget, timeline, and decision maker.
Use a template with the sections listed above.
Keep it short. Put the summary and price on the first page or two.
Write the scope and exclusions carefully. This is where most disputes start.
Check every claim. If you say “most clients see more calls,” can you prove it? If not, cut it.
Use only proof you have permission to share (see 11.1.13 Testimonial Permission).
Add an expiration date and one clear way to accept.
Make sure the terms match your service agreement.
Follow up on a set schedule and record the outcome (see 15.7 Sales Pipeline).

What proof to keep

Each proposal sent, with date and version
The accepted version and acceptance record
Notes from discovery calls
Evidence behind any claims you made
Permissions for any testimonials or examples you used

Common mistakes

Promising results you can’t control, like a top ranking on Google. Google says no one can pay for or request a better local ranking.
Too long. Busy owners don’t read 20 pages.
Options that don’t differ clearly.
Terms that conflict with your agreement.
Using another client’s results or logo without written permission.
No expiration date.

When to get help from a pro

An attorney to review your template and how proposals connect to your contract. Questions to ask:

Does an accepted proposal create a binding contract here, and how should it reference my agreement?
How should I word results so they’re not promises?
Which terms belong in the proposal and which in the agreement?

Bill’s note

[Bill: add a short note. For example, how SiteSmarty structures proposals for Google Business Profile management, and why you never promise rankings.]

If you’d rather have this done for you, SiteSmarty handles Google Business Profile management and website setup.

How I did this for SiteSmarty

[Date I did this:]
[What I actually did, step by step: the SiteSmarty proposal template and how options are set up]
[What it cost and how long it took:]
[What surprised me or what I’d do differently:]
[Screenshot or photo to add, with private info blurred: the proposal summary page]
[Result so far:]

Questions people ask

What’s the difference between a proposal and an estimate? An estimate prices a defined job. A proposal recommends what to do, often with options, and then prices it.

Is a signed proposal a contract? It can be, depending on what it says and your state’s law. Ask your attorney, and link your service agreement.

Can I promise results? Only what you can back up with evidence. The FTC says claims need support before you make them.

Should I include options? Often yes, if they’re clearly different and each one solves the problem.

Audit check

Question: Do proposals state a clear recommendation and terms that match the service agreement, with every claim supported?
Pass looks like: A consistent template. Scope, exclusions, price, timeline, payment, expiration, and acceptance in each proposal. Claims backed by evidence. Terms that match the agreement.
Fail looks like: Ranking or result promises. Missing exclusions. Terms that conflict with the agreement. Unapproved testimonials.
Evidence to collect: Sample proposals, acceptance records, evidence for claims, and testimonial permissions.

Where this fits

Do this first: 11.1.2 Estimate, 7.1.11 Customer Reason to Choose

Do this next: 11.1.4 Scope of Work

Sources

Federal Trade Commission, "Advertising FAQ's: A Guide for Small Business" (checked October 17, 2026)
Google Business Profile Help, "Tips to improve your local ranking on Google" (checked October 17, 2026)

This page explains general rules and Bill's own experience. It is not legal, tax, or insurance advice. Talk to a qualified professional about your situation.