We handle your company’s employer registration certificate. Its official name is constancia de inscripción del empleador, and it is commonly known as the expediente básico. We take care of the initial registration, the annual update, and changing or appointing legal representatives. You receive a formal quote, on average, in less than 24 hours after we have all the information.

Who it is for
Companies and individuals
Annual update
April to May
Document pickup
Included in your quote
What is the employer registration certificate?
It is the document that a company or individual must obtain from Mexico’s National Migration Institute (INM) in order to hire foreign staff. It is processed at the INM office that corresponds to the employer’s tax address.
What we handle
- Initial registration: for companies or individuals that will hire foreign staff.
- Annual update: also known as the renewal. Employers must keep their information up to date with each fiscal year.
- Changing or appointing legal representatives: when the legal representative or attorney-in-fact changes.
- Change of address: when the employer moves.
Key dates for your company
- Annual update: usually between April and May, with the annual tax return for the previous year.
- Change of legal representative, attorney-in-fact or address: must be filed with INM within 30 calendar days of the change.
Requirements for the initial registration
Companies
- Articles of incorporation or public instrument proving the company’s legal existence, with any amendments.
- Public instrument showing the powers granted to the legal representative or attorney-in-fact, if not included in the articles of incorporation.
- Valid official ID of the legal representative or attorney-in-fact.
- Proof of address issued within the last 30 days.
- Tax registry (RFC) certificate and proof that the latest tax return was filed.
- List of employees and their nationalities.
- Employer form.
Individuals
- Valid official ID.
- Proof of address issued within the last 30 days.
- Tax registry (RFC) certificate and proof that the latest tax return was filed.
- Employer form.
We review the current requirements for your case before starting.
Requirements for updates
- Annual update: latest tax return and employer form.
- Change of legal representative or attorney-in-fact: also the public instrument showing the powers granted, and the representative’s valid official ID.
- Change of address: also proof of address issued within the last 30 days.
Your documents are in good hands
We know how important they are. For some procedures, INM asks to see original certificates and IDs for verification. If they need to be collected, our lawyers pick them up in Mexico City, Monterrey and other Mexican states. Pickup is included in your quote.
Most of the time we return them the same day. When the process requires us to hold them longer, our staff carefully safeguards them until they are returned to you.
How we work
- Fill out the questionnaire with your company’s details.
- We review your case and email you a formal quote.
- We tell you which documents we need.
- If originals are required, we pick them up.
- We file with INM and keep you informed.
- We return your documents and deliver the result.
For Human Resources teams
Many of our clients are Human Resources teams handling procedures for their foreign employees. Besides the certificate, we can help with your staff’s residence permits. Learn about temporary residence.
FAQ
Are the employer registration certificate and the expediente básico the same thing?
Yes. Constancia de inscripción del empleador is the official name, and expediente básico is the common name.
Who needs the certificate?
Any company or individual that wants to hire foreign staff.
How often must it be updated?
Information must be updated with each fiscal year, usually between April and May. Changes of address, legal representative or attorney-in-fact must be filed within 30 calendar days.
Do I have to bring my documents to your office?
No. If documents need to be collected, our lawyers pick them up in Mexico City, Monterrey and other Mexican states, and most of the time we return them the same day. Pickup is included in your quote.
Do you work with companies in other states?
Yes. Tell us where your company’s tax address is, and we will confirm how we will handle your case.
Request a quote
Tell us which procedure you need and where your company’s tax address is.
