How to Write B2B Case Studies Your Clients Will Say Yes To

Ask a B2B buyer what convinced them to shortlist a vendor, and you will often hear the same answer: they had done it before for a company like ours. Case studies are the most persuasive content you can publish. They are also the content most B2B companies do not have.

The problem is rarely writing. It is getting clients to agree, and then writing something a buyer will actually read.

Why clients say no

Most clients are not against helping you. They say no, or never reply, because:

• They are worried about sharing numbers or naming problems publicly.
• Their legal or communications team needs to approve anything with their name.
• It sounds like work: interviews, drafts, and reviews.
• Nobody asked at the right moment.

Each of these can be solved.

How to ask

Ask at the moment of success. The best time is right after a result: a launch went well, a target was met, the client thanked you. Put the request in your project process, not in a marketing campaign months later.

Make it easy. Offer a 30-minute interview and say you will write everything. Tell them they will approve every word before anything is published.

Offer levels of disclosure. Some clients will allow their name and logo. Others will allow only "a mid-sized logistics company in Europe." An anonymous case study with real detail is far better than none.

Show what is in it for them. A case study presents the client as a smart decision-maker. Offer them a copy to use internally, a LinkedIn post that features them, or a quote from their leader.

What to include

A useful case study answers the questions a buyer will ask before they call you:

1. Who was the client? Industry, size, and region. Enough for a buyer to see themselves in it.
2. What was the situation? The problem in the client's words, and what it was costing them.
3. Why did they choose you? What made them pick you over the alternatives.
4. What did you do? The main steps, without jargon or a list of every task.
5. What happened? The result, with numbers where possible, and the time it took.
6. What did the client say? One or two quotes from a named person, if allowed.

A structure buyers read

Keep it short. Most buyers skim. Use a headline that states the result, such as "First five clients in three months." Follow it with a one-line summary, then three short sections: the situation, what we did, and the result. End with a quote and a link to the relevant service.

You can see this structure in our own case studies.

Numbers, and what to do without them

Numbers make a case study believable: percentage increases, time saved, revenue, number of clients won. If the client will not share absolute numbers, ask for percentages or ranges. If there are no numbers at all, describe the change in concrete terms: the report that now takes an hour instead of a day, the sales team that stopped using a spreadsheet.

Never invent or inflate numbers. A buyer who checks with the client, and some will, should hear the same story.

Where to use case studies

• On every relevant service page, close to the call to action.
• In proposals and pitch decks.
• In sales follow-up emails after a first call.
• As LinkedIn posts, one lesson at a time.
• As proof for answer engines that describe your company.

Make it a habit

Aim for one new case study each quarter. Add a question to your project closing checklist: "Can we write this up?" After a year you will have four, which is more than most of your competitors.

If you want help interviewing clients and writing case studies, see sales enablement collateral.