Legal due diligence is the structured review of a company's legal position before acquiring it or investing in it. It covers corporate, contracts, labor and social security, tax, intellectual property, real estate, permits, litigation and compliance. Its output is not a report: it is price adjustments, representations, warranties and indemnities in the agreement.
What it is actually for
Due diligence does not exist to produce a report; it exists to change the terms of a deal. Its value is measured by what follows: the price that gets adjusted, the condition imposed before closing, the specific warranty covering an identified risk, the holdback backing a pending contingency. A review that ends in a filed document and an agreement full of boilerplate representations did not do its job.
Where contingencies concentrate
In Mexico, two areas account for most material findings. Labor and social security, where how personnel are engaged, compliance with the specialized-services regime, contributions to IMSS and INFONAVIT, and statutory profit sharing generate liabilities that travel with the company. And tax, where what matters is not only what has already been assessed but what is building: transactions without documented substance, suppliers that could appear on the listings under Article 69-B of the Federal Tax Code, or restructurings without a documented business purpose.
To these are added areas that are routinely underestimated: actual ownership of trademarks and software, the registry status of real estate, the validity and transferability of sector permits, personal data protection compliance and, for regulated activities, anti-money-laundering obligations.
On the sell side
When the process is anticipated from the seller’s side, the outcome changes. A self-review before going to market allows what can be fixed to be fixed — corporate books brought current, trademarks assigned to the company, contracts executed, filings made — so the negotiation begins without the surprises a buyer would otherwise use to discount the price. It is the same work, done with time instead of under pressure.
How scope is decided
Not every deal justifies the same depth. Scope is set based on size, sector, whether shares or assets are being acquired, and the buyer’s risk appetite. Defining materiality thresholds at the outset — what amount warrants reporting — keeps the report from filling with immaterial observations that bury the ones that matter.
This content is informational and does not constitute legal advice. Each matter requires specific analysis.
Are you in this situation?
- You are acquiring a company or an equity stake and only have financial information.
- An investor has requested due diligence and you do not know what you will be asked to produce.
- The target company uses personnel arrangements you are not sure comply with current rules.
- Key assets — trademarks, real estate, permits — may not be held by the entity you are buying.
- You have identified ongoing litigation and do not know how it affects valuation.
- You are closing in weeks and need to know what could stop the deal.
The cost of waiting
Buying hidden contingencies
Labor liabilities, tax exposure in the making and undisclosed litigation transfer with the business and surface after closing, when there is no negotiating leverage left.
Assets the seller does not own
Trademarks registered to a shareholder, real estate without proper title, software without an assignment of rights: what you thought you were buying is not part of the deal.
Non-transferable permits
Certain licenses and authorizations do not transfer with the entity or the assets, and without them operations stop the day after closing.
An agreement that does not protect you
Without documented findings there is no basis for specific representations, warranties or indemnities, and the buyer is left with boilerplate that rarely helps.
Scope and timeline
We define what is reviewed and in what depth based on deal size and risk, and set the timeline against the closing date.
Information request
A document request list structured by subject matter, and coordination of the data room with the seller's advisors.
Review by subject matter
Corporate, contracts, labor and social security, tax, intellectual property, real estate, regulatory, litigation and compliance, including anti-money-laundering and data protection.
Findings report
Each finding with its estimated impact and a recommendation: closing condition, price adjustment, specific warranty or holdback.
Translation into the agreement
Findings become representations, warranties, conditions precedent and indemnities. That is the deliverable that actually protects the buyer.
We have advised on acquisitions and investment processes in both regulated and unregulated sectors, on the buy side and the sell side, in domestic deals and in transactions with foreign investors requiring coordination with home-country counsel. We work against closing calendars, which is where the real value of this review is decided.
Your questions, answered
How long does legal due diligence take in Mexico?
It depends on the size of the company and the quality of its information. A focused review of a well-organized company can be completed in two or three weeks; a company with several entities, real estate and ongoing litigation takes longer. The main source of delay is rarely the analysis — it is incomplete document production by the seller.
What is reviewed on the labor side?
Individual and collective employment agreements, how personnel are engaged and whether that structure complies with current subcontracting and specialized-services rules, compliance with IMSS and INFONAVIT contributions, statutory profit sharing, pending labor claims and accrued benefit liabilities. Along with tax, this is where the most significant contingencies typically arise.
Is due diligence useful in an asset deal?
Yes, though the scope shifts. In an asset purchase what matters most is clean title and absence of liens on each asset, whether contracts and permits can be transferred, and how personnel will be handled. In a share purchase you acquire the entity with its entire history, so the review of past contingencies is far broader.
What happens if serious contingencies appear?
They do not necessarily kill the deal. They are handled through conditions precedent requiring the seller to remedy them before closing, price adjustments, escrow holdbacks or specific indemnities with defined caps and survival periods. What is decisive is that they are documented before signing: after closing, an undisclosed contingency is rarely recovered without litigation.
Let us talk about your matter
Tell us what is happening and we will tell you whether it is a matter we can take on, what it would involve, and how the scope is defined.
A lawyer will review your matter and confirm the next step within 24 business hours.