NOM is the four-digit distillery ID on every tequila bottle. Learn what it means, where to find it, how to use it to buy better tequila, and what it won't tell you.
There’s a four-digit number hiding on the back of every tequila bottle you’ve ever bought. It’s small, easy to miss, and almost nobody knows what it means. The people who do use it to find better tequila at better prices can spot when two different-looking bottles come from the exact same distillery, and catch when a brand they loved quietly changed production facilities without telling anyone.
That number is the NOM. It stands for Norma Oficial Mexicana, and it’s the single most useful thing printed on a tequila label. More useful than the price point. More useful than the origin story on the back. More useful than whatever famous face is attached to the marketing.
This guide covers what the NOM actually means, how to find it, and how to use it to buy smarter every time you’re standing in front of a tequila shelf.
NOM stands for Norma Official Mexicana, and the four-digit number that follows it on your tequila bottle identifies the exact distillery where that tequila was made. Every legally produced bottle carries one. No NOM means no certification, and no certification means you have no way of knowing what’s actually in the bottle or where it came from.
The scale of what that number represents is important to keep in mind. By the end of 2024, the Consejo Regulador del Tequila (CRT), which is Mexico's tequila regulatory council, recorded 206 tequila producers responsible for 2,991 registered brands. That works out to roughly 14 brands per distillery on average. The NOM on your bottle is the only way to know which of those 206 facilities actually made what’s in your glass.
The CRT is responsible for assigning NOM numbers and enforcing production standards in the industry. Every distillery that wants to legally produce tequila must apply for certification, pass inspection, and receive a NOM before a single bottle goes to market.
The CRT also keeps samples from every production run, creating an ongoing record of what each distillery produces and when. It’s one of the more rigorous regulatory systems in the spirits world, and the NOM is how that oversight shows up on your label.
The NOM is on the back label, and once you know what you’re looking for it takes about two seconds to find. Look for the letters “NOM” followed by four digits, usually printed near the bottom of the back label close to “Hecho en México.” Most bottles also carry a CRT seal nearby, which confirms the tequila was produced under certified regulatory standards. If you flip a bottle over and can’t find either of those things, put it back.
Here’s what to look for:
The NOM identifies the distillery, and that single piece of information changes how you read a tequila shelf. Most people assume each brand represents a different producer, but that’s just one of the tequila misconceptions that costs people money.
One distillery, NOM 1348, produces 279 different tequila brands. That’s not a typo. Two hundred and seventy-nine bottles with different names, labels, price tags, and reputation, all coming from the same production facility. Some of those bottles may cost $20 and some $150, but they still have an identical NOM in the back.
This is contract production, and it’s completely normal in the tequila industry. Brands come to distilleries with their specs, the distillery produces to order, and both parties put their names on the result. The CRT lists 2,169 registered brands across 170 active distilleries, though the real brand count runs lower since some names appear multiple times under variations. For example, 1800 tequila has six separate entries.
What this means for you is very simple and very helpful. Two bottles with different names and a $60 price gap between them might share a NOM, which means they came from the same facility and likely the same production process. That’s either a great deal or a reason to question the more expensive one, depending on how you look at it.
Every distillery makes choices that carry across everything it produces, from how it cooks the agave to how it ferments the juice. Those decisions create a flavor fingerprint that shows up in every brand sharing that NOM. Find a distillery whose approach you like and every bottle carrying that number is worth taking a close look at.
Same NOM means same facility and same equipment. It doesn’t mean same tequila, and that’s important to note before you start using NOM numbers to shop smarter.
Think of it like a commercial kitchen. Same ovens, same stoves, same setup, but different chefs can still create completely different dishes from that same space. Two brands sharing a NOM might source agave from different farms or different elevations within Jalisco. They might age in different barrels for different lengths of time depending on whether they're producing blanco, reposado, or añejo, or skip aging entirely. One brand might use the distillery's standard recipe while another brings its own specifications. The production infrastructure is shared. What gets made inside it doesn't have to be.
This is why same-NOM tequilas can taste meaningfully different from each other despite coming from the same address. The NOM tells you who made it and how their facility operates. The brand's own sourcing, aging, and recipe choices tell you the rest. Both pieces of information matter, and neither one alone gives you the full picture.
The NOM becomes incredibly useful the moment you stop treating it as a formality and start treating it as a research tool. Most people take a look at it and move on. Those who actually look it up walk out of a liquor store with better tequila at a better price more often than not, because they understand what they’re buying before they spend their money. Here’s how to put it to work:
The NOM is a powerful tool with limits, and knowing what those limits are is just as important as knowing how to use it. Treating it as a quality stamp rather than an ID number is where most people go wrong. Here’s what the NOM won’t tell you:
The NOM certifies that the tequila was made in a licensed facility following Mexican production standards, but it says absolutely nothing about what ended up in the bottle afterward. Mexican regulations allow producers to add up to 1% of certain ingredients, including glycerin, caramel coloring, oak extract, and sugar syrup, without mentioning any of it on the label. A bottle can carry a valid NOM, a CRT seal, and a 100% agave stamp and still have additives in it you’d never know about from the packaging alone.
So a NOM tells you where a tequila was made, but what went into it after distillation is a separate question entirely. If you care about drinking additive-free, look for brands that come out and say so explicitly.
Two major resources cover this well, and between them you can find production details on essentially any certified tequila on the market.
Agave Matchmaker has both an app and a website, and it’s the most user-friendly place to start. Search by brand name or NOM number and you’ll get the distillery name, location, production methods, and every other brand registered under the same NOM. It pulls from the CRT data but presents it in a way that’s actually readable.
The CRT maintains an official brands and companies registry that’s publicly searchable. It’s the most authoritative source since it pulls directly from the regulatory body, but it’s less polished than Agave Matchmaker and takes a bit more patience to navigate. Use it to verify anything you find elsewhere or to dig into production details that third-party apps don’t always have access to.
Most people never flip the bottle over. The ones who do buy better tequila, spend their money more confidently, and stop getting surprised by bottles that look different but taste suspiciously familiar. Four digits on the back label connect you to a specific distillery and a specific set of choices that end up in your glass. That’s worth thirty seconds of your time before you spend $60 or more.
At León Y Sol, we source 100% blue Weber agave from Los Altos and produce without additives, shortcuts, or anything we’d hesitate to put on the label. Our NOM is on the bottle. Grab a bottle of blanco or reposado and see what transparent production tastes like.
No. The NOM identifies the distillery where the tequila was made and confirms it was produced under certified regulatory standards. It says nothing about the quality of what came out of that facility. Two distilleries with identical NOM certifications can produce tequilas that taste worlds apart depending on agave sourcing, production choices, and the master distiller’s decisions.
Yes, and it happens all the time. One distillery can produce dozens or even hundreds of brands under a single NOM through contract production. NOM 1438 produces 279 different brands, all from the same facility. Sharing a NOM means sharing a production address, not necessarily a recipe or aging program.
No. Mexican regulations allow producers to add up to 1% of certain ingredients, including glycerin, caramel coloring, oak extract, and sugar syrup, without disclosing them on the label. A bottle can carry a valid NOM and still contain additives that never appear anywhere on the packaging. If additive-free tequila matters to you, look for brands that explicitly state it and can back it up with third-party verification.
The CRT, or Consejo Regulador del Tequila, is Mexico’s official tequila regulatory council. It assigns NOM numbers to licensed distilleries, monitors production compliance, certifies every batch before it can be bottled and sold, and maintains the official brand registry. Every NOM number on a tequila bottle was issued by the CRT.
Yes, and it happens more than most people realize. Brands switch production facilities for all kinds of reasons, and when they do, the NOM changes with it. If a tequila you’ve been buying for years suddenly tastes different, try checking if the NOM changed.
The NOM identifies the specific distillery that produced the tequila. The CRT seal confirms it was certified and meets Mexico’s official production standards. The NOM tells you where it was made, while the CRT seal tells you it was made properly.
Every legally certified bottle of tequila must display a NOM by law. If you pick up a bottle labeled as tequila and can’t find one, that’s a serious red flag. No NOM means the product either wasn’t certified through the CRT or isn’t actually tequila at all.
