Typical timeline of an M&A process in Mexico

An M&A process for a Mexican SME from first contact to closing typically takes four to nine months if nothing blocks. Duration depends on business size, whether an advisor is involved, and how fast each side delivers information and signs. This note describes typical timelines by phase so sellers and buyers can align expectations.

How long does the contact and NDA phase take?

From the buyer showing interest to signing the NDA usually takes one to three weeks. If the seller has an advisor, the buyer may receive a standard NDA and sign quickly. If the seller negotiates alone, back-and-forth on drafts can stretch the process. A buyer who takes more than two weeks to return a signed NDA signals low urgency; the seller can keep talking to other interested parties in parallel.

How long until the indicative offer (IOI) or LOI?

Once the CIM and, if applicable, the initial data room are open, the buyer typically has two to four weeks to submit an IOI or LOI. In competitive processes the seller sets a deadline; in bilateral processes the timeline can extend if the buyer requests more information. Negotiating LOI terms — price, consideration structure, exclusivity, closing conditions — can add another two to four weeks until signing.

How long does due diligence take?

Full due diligence on a Mexican SME usually takes four to ten weeks. It depends on business size, quality of the data room and whether the buyer uses an external firm (Big 4, law firm) or in-house team. The areas that most delay are tax and labor when there are irregularities or incomplete documentation. A well-prepared data room shortens the timeline and reduces last-minute surprises.

How long for definitive documentation and closing?

From closing the LOI negotiation to signing the definitive agreement and closing usually takes four to eight weeks. In this phase the purchase agreement, representations and warranties, and transition agreements (TSA) if applicable are drafted, and closing conditions (regulatory, financing) are satisfied. The most common delays: buyer internal approvals, securing financing, and last-minute legal review. A seller who has already put their company in order and documentation up to date shortens total process time.

What can lengthen or shorten the process?

Lengthen: messy or incomplete data room, material due diligence findings that force renegotiation, multiple offer rounds, a buyer dependent on slow internal approvals or uncertain external financing. Shorten: prepared seller, buyer with capital ready and fast decision-making, advisor who keeps timelines and deliverables on track. The guide on what to do when you receive an offer and the one on what to do as a buyer in the first 30 days detail steps and timelines in the early stage.