How to Write a Proposal for a Client (Step by Step)

You’ve had a good call. The client liked what they heard and asked you to “send something over”. What you send next decides whether you get the work.

To write a proposal for a client, first find out what they need and who signs off. Then open with their situation, explain your approach, define the scope, set the timeline, give two or three priced options, add a little proof and end with one clear next step. Keep it short enough to read in one sitting, and send it within a couple of days of the call.

We make proposal software, so we see what happens after you hit send. Our customers sent 2,435 proposals in the first quarter of 2026, and half of them were accepted. Clients who opened their proposal did so a median of 54 minutes after it arrived. Our State of Proposals 2026 report has the full-year numbers for 2025. This guide covers each step, with an example proposal and the timing data to plan your follow-up.

What goes in a client proposal

A client proposal explains what you’ll do for a client, how, by when and for how much, and asks them to agree. A quote only gives the price. A proposal makes the case for the price and gets it signed.

Most client proposals have the same seven parts, in this order:

The examples come from a website proposal for a fictional physio clinic, which we’ll follow through the steps below. Our proposal outline guide goes deeper into the structure.

How to write a proposal for a client in 8 steps

Step 1: Find out what you need before you write

Most weak proposals go wrong before anyone writes a word. Often the writer was afraid someone else would get there first, so they sent something the same afternoon. A fast proposal that misses the client’s real goal loses to a slower one that gets it right.

Before you write, make sure you can answer these questions. If you can’t, book a second call. A good question shows the client you’re taking their project seriously.

• Who can say yes? Your contact may be running the project without owning the budget. Find the person who can approve the work, and make sure the proposal reaches them.
• What does success look like? Ask for a number or a date: more bookings, a launch before a trade show, fewer support calls.
• What’s the budget? A range is enough. Our guide on asking about the budget has the words to use.
• Who else has a say? An IT lead, a partner, the team that will use what you build. People who feel left out of a decision can stall it, so bring them in early.
• What could get in the way? A holiday in the middle of the project, a busy season, a system they’re replacing, a board meeting.
• Is there anything else I should know? It sounds too simple to ask, and it often brings up the one thing that changes your plan.

End the call by agreeing when you’ll send the proposal, and book a short call to go through it together. Our client interview guide has the full set of questions.

Step 2: Open with the client’s situation

In three to five sentences, describe where the client is now, what they want and why it matters to them now. Use the words they used on the call, so they recognize their own problem. Your company can wait until the proof section.

Clients read this part first, and often within the hour. Of the proposals sent through Nusii that clients opened, half were opened within 54 minutes of sending. That’s usually before you’ve spoken again, so the opening has to make the case without you.

Here’s the overview from our example proposal:

The client reads that and knows you listened. Everything after it explains how you’ll get them there.

Step 3: Explain your approach

Next, explain how you’ll get the client from where they are to where they want to be. Split the work into a few phases and say what each one does for the client, in plain language.

Compare these two descriptions of the same work:

• Hard to follow: “Discovery, information architecture, wireframes, UI design, development, QA.”
• Easy to follow: “In week 1, we go through the questions your front desk answers most and plan five pages that answer them. In weeks 2 to 5, we design and build the site, with two rounds of your feedback. In week 6, we train your team and launch.”

Recommend one approach. If there are real alternatives, such as adding the page copy or not, turn them into pricing options in step 6. A proposal that lists three ways to do the work leaves the client to make your decision for you.

Step 4: Define the scope, including what isn’t included

The scope lists exactly what the client gets: the deliverables, the number of revision rounds and anything else the price covers. Then add a short list of what isn’t included. Agreeing on the edges before the work starts saves arguments later.

For the clinic, it could look like this:

• Included: five pages, online booking connected to your practice software, two rounds of design revisions, a one-hour training session.
• Not included: writing the page copy (available as an option), photography, ongoing maintenance (available as a monthly care plan).

List what you need from the client too: the content, logins, one person to give feedback and how quickly they’ll reply. Late feedback is a common reason projects run over, and the proposal is the easiest place to agree on it. Our post on getting clients to stick to a timeline has more on this.

Step 5: Set the timeline

Give the main milestones in weeks from the start date, so the plan still works if the client signs later than expected. Mark the points where you need something from them, such as content, approvals or feedback. Then check the dates against what you learned in step 1, like that holiday in the middle of the project.

If the start date depends on when they sign, say so: “We can start on 12 January if you accept by 15 December.” It’s honest about your schedule, and it gives the client a reason to decide.

Step 6: Price it with two or three options

Put the price after the overview, approach and scope, when the client knows what they’re paying for. Show the total clearly, so nobody has to add up line items to find it.

Then give the client a choice. With two or three options, the client compares your packages with each other, instead of comparing you with doing nothing or hiring someone else. A simple setup:

• A core option that solves the problem you agreed on. For the clinic, the website with online booking.
• An extended option that adds what clients often ask for next. For the clinic, the website plus page copy.
• Optional extras the client can add, such as a monthly care plan.

Describe what each option includes in a line or two, and add the payment terms, for example a deposit to start and the rest at launch. If you’d rather price on the value of the work than on your hours, our guide to value-based pricing explains how to set the number.

In Nusii, the client picks an option or ticks optional line items in the proposal itself, and the total updates as they choose.

Step 7: Add proof that fits this client

The client wants to know you’ve done this before. One or two results from similar clients, a short quote from one of them and the names of the people who’ll do the work are enough. A booking website you built for another clinic says more to Northside Physio than a page of awards.

Keep the part about your company short. The client reads your proposal to find out what happens to their business, and a long company history pushes the price and the next step further down. Our post on focusing a proposal on the client has examples.

Step 8: Make it easy to say yes

End with one clear next step and what happens after it:

Let the client accept right there. Of the accepted proposals in our data, 37% were signed within a day of being sent. That’s easy when the client can type their name and sign in the proposal itself, and harder when they have to print a PDF, sign it and scan it back. An expiry date helps too: it gives the client a deadline and protects you if your prices change.

Before you send it, read it once as the client would. Our proposal checklist has the final checks.

When to follow up after you send a proposal

Clients who say yes usually say it quickly, which makes follow-up easy to plan. Here’s how fast clients opened and signed the proposals our customers sent in the first quarter of 2026:

From those numbers, a simple follow-up plan:

• Not opened after two days: check that it arrived. Three in four proposals are opened within a day, so if yours hasn’t been, it may be in a spam folder or with the wrong person.
• Opened, no answer after three days: by then, half of the proposals that get accepted have been signed. Send a short note and offer to go through it on a call.
• No answer after two weeks: 76% of the proposals that get accepted are signed within two weeks. Ask directly whether the timing or the scope has changed, and offer a smaller first step.

How fast clients decide depends on what you sell. Accepted proposals from software and IT firms were signed after a median of two days, and from agencies after three. For 2025, our State of Proposals report breaks this down by industry and business size.

Nusii emails you when a client opens your proposal, so you know when to follow up. What you write is up to you, and our follow-up email templates are a good start. For more on what to watch after sending, see our guide to proposal tracking.

How long should a proposal be?

Long enough to answer four questions: what you’ll do, how much it costs, when it’ll be done and why the client should pick you. For most client projects, that’s a few pages the client can read in about ten minutes.

Move anything the client might need later, such as detailed specifications or your terms, to an appendix or an attached document. If one part is much longer than the others, it’s usually the part about your company, and that’s the one to cut.

Common proposal writing mistakes

• Sending it too soon. A proposal written before you know who decides and what success looks like is a guess. The single biggest mistake with proposals covers this.
• Writing about yourself. Your history belongs in a short proof section near the end.
• Sending a price list. A list of tasks and prices invites the client to compare you on price alone. See what a proposal isn’t for.
• Leaving the scope open. “Website redesign” without a list of pages and revision rounds leads to arguments later.
• Giving one price. With a single option, the only choice the client has is yes or no.
• Ending without a next step. A proposal without a way to accept and a date to decide by tends to wait.

Can you use AI to write a proposal?

Yes, for the first draft. AI assistants are good at turning call notes into an overview, filling a template with the client’s details and spotting sentences that are hard to follow. The parts that win the work still need you: what you recommend, the scope, the price and the proof you choose.

Nusii has a connector for AI assistants such as Claude and ChatGPT. You describe the client and the project, and the assistant drafts the proposal in your Nusii account from your own templates. It never sends anything on its own. You review the draft, fix what it got wrong and send it yourself. Here’s how it works with Claude.

Proposal templates to start from

A template that already has the parts in place makes every step above faster. Our free proposal templates include web design, digital marketing, consulting, SEO and more. For finished examples, see our proposal samples.

If you’re still choosing a tool, our comparison of the best proposal software puts the main options side by side. When you’re ready to send yours, Nusii lets your client read the proposal, choose their options and sign it online, and emails you the moment they open it.

Frequently asked questions about writing a proposal