Mexico's e-commerce share now beats the US, but only 31% of retailers keep one inventory across channels

Only 31% of retailers in Mexico integrate their inventory so that what they show online matches the stock they actually have, according to data AMVO presented on October 15, 2026.

The figures came from Daniela Orozco, head of market research at AMVO (the Mexican Online Sales Association, the country's main e-commerce trade body), speaking at eRetail Day Latam Mexico 2026 in Mexico City. The headline that made the rounds was a different one: e-commerce now accounts for a bigger share of retail sales in Mexico than in the United States, 17.7% versus 16.8%, as reported by Amexi. For a brand selling into Mexico, though, the inventory number is the one worth reading twice.

What AMVO presented

Two terms worth pinning down. Ship from store means fulfilling an online order from a physical store's stock instead of a central warehouse. A cross-channel return is sending back through one channel something bought through another, like buying online and returning in store.

On the self-assessments: AMVO member companies rated themselves between 2.6 and 3.1 out of 5 across the areas of their digital development, with an average of 2.9, per Mexico Business News.

The gap isn't in sales. It's in the warehouse

Put the numbers side by side. Seven in ten shoppers already move between channels, and roughly seven in ten retailers can't guarantee that what their online store says is in stock is actually on the shelf. According to Mexico Business News, Orozco's own summary was that the challenge is no longer demand but execution.

When inventory isn't integrated, the damage shows up in three places:

• Overselling. The same units are listed on three channels, and someone buys one that already sold elsewhere. You cancel, and on a marketplace a cancellation counts against your account's standing.
• Channel buckets. To avoid overselling, you split stock: so many units for your own store, so many for each marketplace. One channel runs out while another sits on stock that isn't moving.
• Clashing cutoffs. The cutoff is the latest time an order can come in and still ship the same day. Every channel has its own, plus its own delivery promise. If there's one operation but no written rules, orders get picked first come, first served, and the most demanding channel is the one that misses.

None of these is a marketing problem. They're inventory problems, which we unpack in what omnichannel retail really means.

What it means for your brand: four decisions

1. One stock number. One inventory that every channel reads from, instead of a number per channel that someone reconciles by hand. This is the entry ticket; nothing else holds without it. We cover which data has to flow between your store and your warehouse, and in which direction, in what syncs between your store and your 3PL.

2. An honest definition of "available." Only list as available what is physically somewhere it can ship from today. Stock in transit, held at customs or waiting for labels isn't sellable inventory, even if you've already paid for it. Count accuracy is the foundation; we go through how to measure it in inventory control for e-commerce.

3. Written priorities and cutoffs per channel. When three units are left and five orders come in from different channels, which one ships? If you don't decide in advance, it gets decided for you, and rarely in your favor.

4. Returns that go back into the same inventory. It makes sense that only 15% of retailers accept cross-channel returns: every returned unit has to be inspected and put back into the same pool it came from, not into a box on the side. Before offering "buy here, return there," decide who inspects the item and how it gets back into the count.

What this data doesn't tell you

• The scores are self-assessments by AMVO member companies, not a measurement of the whole market. The coverage doesn't give a sample size either.
• The 23% ship-from-store and 15% cross-channel return figures appear in only one of the two articles. The inventory, omnichannel and self-assessment figures appear in both.
• The 17.7% isn't new. It matches the figure in AMVO's 2026 Online Sales Study, which we collected in Mexico e-commerce statistics for 2026. Mexico Business News reported it as 17.8%. What's new is the comparison with the US and the operational data.
• Ship from store only applies if you have physical stores. If you sell online only, your version of the problem is your own storefront plus two or three marketplaces drawing on the same stock, which is the most common setup in Mexico.

Frequently asked questions

What share of retail sales in Mexico happens online?

17.7%, versus 16.8% in the United States, according to data AMVO presented on October 15, 2026 at eRetail Day Latam Mexico.

What does integrating inventory across channels mean?

That every sales channel shows the same stock number, and that number matches what's physically in the warehouse. According to AMVO, only 31% of retailers in Mexico do it.

Does this affect me if I don't have physical stores?

Yes. Your own store plus two marketplaces is already three channels selling the same inventory. Without a single stock number, overselling happens all the same.

If you sell across several channels in Mexico and your inventory no longer adds up between them, that's what we solve as a 3PL in Mexico: one inventory per brand, reported the same way to every channel by our inventory system.