Preparing to sell your company: the work starts 12 months out

By Adrien Pannetier · August 2026 · 8 min read

A lot of sale mandates cross our desk. The processes that go off the rails almost always share the same cause: not a bad market, not a bad buyer, but a company that wasn't ready. The good news: preparation is something you can manage. Here's the work to do, 12 to 18 months before launch.

1. Numbers that stand up to an audit

Any serious buyer will have your accounts audited. What they'll look for: how reliable your EBITDA is, the quality of your revenue (recurrence, customer concentration), normalised working capital. What you need to prepare:

2. Make the business less dependent on you

This is the number one weak spot in SMEs. If everything goes through you (key customers, decisions, know-how), the buyer is buying a risk, and they'll make you pay for it: a discount, a long earn-out, a binding handover period. Twelve months is the minimum to delegate in a way people can see: an identifiable management team, written processes, customer relationships that don't rest on you alone.

3. Lock down what creates the value

4. Plan for tax, now

The tax structuring of a sale (rolling your shares into a holding company before the sale, the French Dutreil pact for a family handover, the capital gains regime) is prepared months, sometimes years, in advance. Some schemes require minimum holding periods. It's the first topic to tackle with your tax lawyer: once the LOI is signed, it's too late to optimise.

5. Don't let the business slow down

A sale process takes 6 to 10 months and eats up a staggering amount of energy. The classic trap: the owner gets absorbed by the deal, sales drop off, and the buyer chips the price down at the finish line. That's exactly why an adviser runs the process: so you stay focused on performance, which remains your best negotiating argument right up to the last day.

The process, once you're ready

Our sale mandates follow a proven playbook: 2 to 4 months to test market value (30 to 60 qualified counterparties approached confidentially, about half reply, around ten sign an NDA), then 3 to 6 months of negotiation, due diligence and documentation through to closing. At the end, 1 to 3 firm offers that we play off against each other. The details are on our M&A page.

The question you'll be asked

“Why are you selling?”

Prepare an honest, consistent answer. A buyer quickly spots a seller in a hurry or a hidden problem. “I want to bring the company into a group that can take it further” is a good answer if your process proves it. And for an impact company, the real question behind it: what happens to the mission after you? Serious buyers want an answer, and so do we: it's the very reason Prouesse exists.

This article is for general information only. It is not investment, legal or tax advice. Every deal deserves its own analysis: let's talk about yours.
Adrien Pannetier
Adrien PannetierFounder of Prouesse. 15 years in private equity and impact investing, formerly at Caisse des Dépôts.

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