How to write a proposal that wins a long-term client

Open a typical proposal and you meet the sender first: its history, its credentials, a page of client logos. The client's actual problem turns up somewhere around page seven, and the price hides at the back as though it were an embarrassment.

The reader works in the opposite direction. They find the price first, then check whether you actually heard them, and only after that decide whether your credentials matter. Write in the order the client reads and you are far more likely to get a decision. That holds for anyone selling ongoing work, whether a marketing retainer or a long-term service contract, and it doubles as a checklist when you are the one comparing proposals from agencies.

Open with their words, not yours

Page one belongs to the client's situation as they described it: the change they are after, the reason it matters now, and the cost of standing still. Reuse the language from the briefing call. When the marketing manager forwards the document to their director, this page is the evidence that you listened.

Struggling to write that page is a sign the proposal is premature, so go back with questions. A short second call to confirm the objective comes across as seriousness, not weakness, and it often surfaces whatever the client left unsaid the first time.

A running order that works

For most retainer proposals, this sequence holds up well:

• Your situation. The problem, the goal and the deadline, framed the way the client framed them.
• Our approach. One paragraph on how you will tackle it, then the phases and their timing.
• How success is measured. Two or three measures linked to the goal, and when each will be reported.
• The people. Named team members, what each will do, and the share of their time the account will get.
• Relevant work. Two or three examples, each with a single line on the result.
• Investment. The price, the options, and what each one includes.
• Next steps. What the client must do to get started, and the date to do it by.

Several things are deliberately left out: the founding story, a values statement and the full client list. If any of them genuinely matters, one line in the team section is enough. No client has ever chosen a supplier because its proposal ran to more pages.

Paint the first ninety days

Retainers ask clients to commit for a long time to work they cannot see beforehand. The most convincing thing you can give them is a concrete outline of the first three months: the first week's activity, what the client will have in hand at the end of month one, and how things will look different by the close of month three.

That does two jobs at once. It gives an abstract arrangement some shape, and it fixes expectations at the start, so nobody is alarmed when week two has not yet produced results.

Present the price as a choice

The way the price appears matters nearly as much as the number itself. Show one figure and the client decides between yes and no, and no takes less effort. Show two or three options and the decision becomes which yes.

• Separate the options by scope, not by discount. A higher option buys more work, never a cheaper version of the same work.
• Name each option after what it achieves rather than after metals or sizes.
• Put your recommended option in the centre and explain plainly why you recommend it.
• List what each option excludes. The usual exclusions are media spend, influencer fees, filming and additional revision rounds.
• Make clear whether VAT is included, what the minimum term and payment terms are, and until when the proposal is valid.

Keep every price in one place. A finance team forced to piece the total together from three different sections will come back with questions, and each question costs a week. The test is simple: could the investment page be forwarded on its own and still make complete sense?

If the finance team can approve it without calling you, the proposal is already moving.

When the client picks an option, convert it into a formal quotation plus a statement of work. The quotation pins down the price and how long it holds. The statement of work pins down deliverables, revision rounds and how changes are handled, and that is where the margin on a retainer is really defended.

Agree the decision date before you leave

Follow-up starts before anything is sent. As the briefing or presentation wraps up, put two questions to the client: who else will need to see this, and when do you expect a decision? Write the answers down and restate them in the email that goes out with the proposal.

That turns follow-up from an anxious check-in into a date both sides have already agreed. Should the date slip, your message is no longer chasing. It is a reminder of something the client said would happen.

Make every follow-up worth opening

The weakest follow-up is the one that simply checks in. It asks the client to do some work, replying, and gives them nothing back. A stronger one brings something with it.

• The answer you promised to find for a question raised in the meeting.
• A brief note on a relevant development in their market or category since you last spoke.
• A single-line summary of the options, for whoever has not read the whole document.
• On the agreed date, a straightforward, courteous question: is the decision still happening this week, and is anything missing?

Keep follow-ups to a set rhythm, have a single person send them, and decide in advance how many you will send. If three useful, well-spaced messages get no reply, take that as your answer rather than writing a fourth.

Learn from every loss

After a loss, ask the client for the reason, keep it brief and do not argue. Most will tell you, and the reasons soon fall into a handful of groups: the price, the team, the timing, or an existing supplier the client was never really going to replace. Keep a short record of each outcome and its reason. Within a year it will teach you more about writing the next proposal than any template.

When you do win, keep the quotation alongside the invoices that follow it, in the client's currency, so the winning price is still visible once the retainer is under way.

Writing a proposal for a contract that matters? If you would like the document to look as considered as the thinking behind it, talk to ALXO about its design and structure.