Amparo in Mexico 2026: what it is, types, deadlines and suspension

What an amparo is and what it covers

The juicio de amparo is the mechanism the Mexican Constitution gives any person — individual or company, Mexican or foreign — to have a federal judge review whether an act of authority violated their fundamental rights. It rests on articles 103 and 107 of the Constitution and is governed by the Amparo Law.

In plain terms: when an authority fines you, blocks you, seizes your assets, refuses a procedure or simply never answers, the amparo is how someone independent of that authority checks whether it acted lawfully.

It essentially covers three things:

• General rules — laws, regulations, general rules — that affect you from the moment they take effect or from the first time they are applied to you.
• Acts of authority that violate your rights: fines, closures, seizures, restrictions, refusals.
• Omissions: an authority that is obliged to decide and does not.

It does not apply, among other cases, while you still have an ordinary remedy available that could undo the act. That is the principle of definitiveness, and it is the number one reason amparo cases are dismissed: people rush to amparo when they should first have used an administrative appeal or an annulment action.

Indirect and direct amparo

For a business or an individual in trouble with an administrative authority, it is indirect amparo in around nine cases out of ten.

Deadlines: where most cases are lost

A well-argued amparo filed late is worth exactly as much as a badly argued one: it is thrown out. Article 17 of the Amparo Law sets the deadlines, counted in business days, starting the day after the notice takes effect.

Two details people miss:

• Non-business days do not count: weekends, the holidays listed in article 19 of the Amparo Law, and days when the court suspends work.
• The SAT's Buzón Tributario serves notice even if you never open it. The notice takes effect and the deadline runs. Here is how it works.

Suspending the challenged act

In practice, this is what clients care about most. The final judgment can take months; the suspension is decided in days. It is the interim measure that freezes the effects of the act while the case is resolved: your property is not auctioned, your business is not closed, you can keep operating.

• Provisional suspension is decided almost as soon as the claim is admitted, on what the judge has in front of them.
• Definitive suspension is decided at a separate hearing, after the authority has been heard.

The judge weighs whether suspension would harm the public interest or breach public-order rules, against the apparent merit of your case. And this is where the 2025 reform moved the goalposts.

What the 2025 reform changed

On 16 October 2025 a sweeping reform to the Amparo Law, the Federal Tax Code and the organic law of the Federal Administrative Court was published in the Official Gazette, in force from 17 October. The changes that actually affect your case:

1. A stricter legitimate-interest test

You must now show that the rule, act or omission causes you a real legal injury, distinct from the rest of the population, and that annulling it gives you a certain rather than hypothetical benefit. Amparos filed "on behalf of the general interest" are over.

2. Narrower suspension

The grounds on which suspension is refused were expanded, prioritising the public interest in areas such as anti-money-laundering, account freezes ordered by the Financial Intelligence Unit, public debt and the functioning of the financial system. Suspensions with general effects against laws are expressly ruled out.

3. Tax matters

In tax cases, suspension only takes effect if you post security covering the tax interest, and amparo against final tax assessments was limited to later stages of the collection procedure.

4. Online amparo and decision deadlines

The electronic case file was consolidated and a maximum period to issue judgment after the constitutional hearing was set. The good practical consequence: a firm can litigate in any state without charging you travel costs.

Amparo in tax matters: the most common cases

• Restricted or cancelled invoicing certificates (CSD). The first step is the clarification under article 17-H Bis of the Federal Tax Code; if it is rejected, an appeal or amparo follows. Full guide here.
• Frozen bank accounts during enforced collection.
• Publication on the article 69-B list of taxpayers presumed to invoice non-existent operations.
• Fines and tax assessments with defects in their legal basis, reasoning or service.
• Refused refunds of VAT or income tax credits.
• Amparo against tax reforms that affect you from the moment they take effect.

Outside tax: IMSS assessments, refused pensions, municipal closures, administrative fines, refused permits, INM decisions on residency and unanswered petitions to any agency. For immigration cases see our immigration amparo.

How it is filed, step by step

1. Identify the challenged act and the responsible authority. It sounds obvious; it is where most cases fail.
2. Check the route and definitiveness. Is it amparo, or is an ordinary remedy still pending?
3. Count the deadline in business days from the day after the notice took effect.
4. Draft the claim with the requirements of article 108: claimant, responsible authorities, challenged act, provisions violated and the grounds of violation — the heart of the case.
5. Request suspension in the same claim, explaining the damage that would be hard to repair.
6. File, today normally online with an electronic signature.
7. Follow through: the authority's report, the suspension hearing, the constitutional hearing and judgment.

The mistakes that sink an amparo

• Filing late. The most common and most expensive.
• Not exhausting the ordinary remedy when the law requires it.
• Naming the wrong authority, or leaving out the one that executes the act.
• Generic grounds such as "my rights were violated" without explaining how.
• Not requesting suspension, or requesting it without showing the harm.
• Forgetting the security for the tax interest when the act is a collection.

What an amparo costs

In the Mexican market, fees for an indirect amparo broadly range from MX$15,000 to more than MX$80,000, depending on the firm, the complexity and whether they charge a flat fee, by the hour or a percentage of the amount at stake. Some firms charge separately for each filing, hearing and appeal, and that is where budgets explode.

GesMexa charges MX$9,900, VAT included, for the complete indirect amparo: case review, claim, suspension request, filing and follow-up to first-instance judgment, at the same price in every state. Here is our breakdown of market prices and what a decent quote should include.

What you can and cannot expect

An amparo is not magic and not a button that cancels your problems. It is a technical lawsuit with strict rules, won when there is a real violation and it is properly proven. What you can expect from a good lawyer is candour: a clear view from the start of how viable your case is, how likely suspension is and what it will really cost — all of it, not in instalments.

If someone guarantees you will win, they are not being honest with you.