California Bans 'Sell By' Dates, Mandating Standardized 'Quality' or 'Safety' Labels on All Packaged Food

You know the exact moment. You are standing in the cool glow of the open refrigerator, holding a carton of milk or a tub of yogurt, squinting at a smudged ink stamp on the plastic. It says 'Sell By' and yesterday’s date. You give the contents the obligatory smell test, hesitate for a moment, and ultimately toss the entire package into the trash. It feels wasteful, but you are unwilling to risk a weekend stomach ache over a few dollars of dairy. It is a quiet, frustrating kitchen ritual that costs the average family hundreds of dollars a year.

That exact scenario plays out millions of times a day across the country, driven by a labeling system that was never actually meant for you to read. But as of July 1, 2026, California has officially rewritten the rules of the pantry. Under a first-in-the-nation law known as Assembly Bill 660, the state has banned consumer-facing 'sell by' dates on all newly manufactured packaged foods, forcing a massive shift in how we understand freshness. The legislation aims to replace decades of grocery aisle guesswork with a standardized system that clearly separates peak flavor from actual food safety.[1][2]

For decades, the American grocery aisle has been a wild west of expiration terminology. Shoppers have had to navigate a chaotic, unregulated landscape of more than 50 different phrases, ranging from 'Expires On' and 'Freshest Before' to 'Enjoy By' and 'Display Until.' With no federal regulations dictating what these stamps actually mean—except in the specific case of infant formula—the burden of interpretation fell entirely on the person holding the grocery bag. Manufacturers were free to use whatever language they felt best represented their product, resulting in a patchwork of dates that left consumers entirely in the dark.[1][3]

The environmental and financial costs of that confusion have been staggering. According to data from the Natural Resources Defense Council and other environmental advocates, an estimated 20 percent of all avoidable food waste in the United States is caused directly by consumers misunderstanding expiration dates. In California alone, that translates to roughly 6 million tons of unexpired, perfectly edible food discarded annually. When that food hits the landfill, it decomposes and generates massive amounts of methane, a greenhouse gas significantly more potent than carbon dioxide.[1][3]

To stop the bleeding, California’s new legislation strips away the ambiguity. Food manufacturers, processors, and retailers selling packaged goods in the state are now legally required to use a streamlined, two-tier labeling system. The 50-plus confusing phrases have been entirely replaced by just two standardized terms, each carrying a very specific, legally defined meaning designed to tell you exactly what is happening inside the package. By forcing the entire industry to speak the same language, lawmakers hope to rebuild consumer trust and dramatically reduce the volume of wholesome food being thrown into the garbage.[1]

The first label you will see on store shelves is 'Best if Used By'—or 'Best if Used or Frozen By' for items that can be preserved in the freezer. This is strictly a quality date. It tells you when the manufacturer believes the product will reach its absolute peak flavor, texture, and overall freshness. If you find a box of crackers, a can of soup, or a bag of pasta past this date, the food might be slightly stale or less vibrant, but it is not inherently dangerous to consume. It is an invitation to use your senses, not a mandate to throw the item away.[1][2]

The second approved label is 'Use By'—or 'Use By or Freeze By.' This is a safety date, reserved specifically for highly perishable items like fresh meats, poultry, and certain dairy products. When a product passes its 'Use By' date, the risk of foodborne illness actively increases, and the item should be discarded or frozen immediately. Unlike the quality date, this label serves as a genuine hard stop for consumption. It is the only phrase on the packaging that actually means the food is no longer safe to eat.[1][2]

So, what happened to the ubiquitous 'Sell By' stamp that has dominated milk cartons for generations? It has been completely banished from the consumer’s view. Historically, 'sell by' dates were never intended as safety warnings for the public; they were internal inventory tools designed to tell grocery store clerks when to rotate stock to ensure a visually appealing display. Unfortunately, because they looked identical to safety dates, they trained generations of shoppers to prematurely throw away wholesome food the moment the date passed.[1][3]

Grocery stores still need to manage their inventory, of course, and the law accommodates that logistical reality. Retailers are permitted to continue using 'sell by' dates for stock rotation, provided they are converted into a coded format. As long as the date is an alphanumeric string that is not easily readable or decipherable by the average consumer, the store remains in compliance. This allows clerks to keep the shelves fresh without accidentally tricking you into throwing away a perfectly good gallon of milk.[1]

The transition to this new system will not happen overnight. Because the law applies specifically to packaged food items manufactured on or after July 1, 2026, a natural sell-through period is currently underway. You will still see the old, chaotic labels on non-perishable goods that were boxed and canned before the deadline, gradually fading from shelves as older inventory is purchased and consumed. Over the next several months, the standardized labels will become the dominant language of the grocery store.

There are also a few notable exemptions to the new rules that shoppers should be aware of. Infant formula remains governed by strict federal safety regulations and is entirely exempt from the state law, meaning its labeling will not change. Additionally, the rules do not apply to food prepared for immediate consumption, such as restaurant takeout, bakery items, or hot deli foods packaged at the counter. Certain alcoholic beverages, including beer and malt beverages, are also excluded from the standardized labeling requirements, though most other packaged pantry staples fall firmly under the new mandate.[2]

For the food industry, the shift requires a massive logistical overhaul that has been years in the making. Manufacturers and private-label retailers must audit their entire product portfolios, determine whether each individual item requires a quality or safety date, and redesign their packaging accordingly. The stakes for getting it wrong are high, with violations carrying misdemeanor fines of up to $1,000 per instance. Compliance advisors are urging companies to coordinate closely with their supply chains, as both the manufacturer who prints the label and the retailer who places it on the shelf share the legal risk for non-compliant packaging.

While AB 660 is technically a state law, its impact is already rippling far beyond California’s borders. Because California represents such a massive share of the American consumer market, it is economically impractical for major national food brands to design, print, and distribute state-specific packaging just for one region. Instead, many companies are treating the California rule as a de facto national standard, rolling out the 'Best if Used By' and 'Use By' labels to grocery stores across the entire country. This means a policy designed in Sacramento is likely to change how families in Ohio and Florida manage their pantries.[1][3]

Ultimately, the ban on 'sell by' dates is a rare policy shift that directly benefits both the household budget and the environment. By giving shoppers clear, unambiguous language, the state is empowering families to trust their senses and keep their groceries out of the trash. It is a simple, common-sense reform that promises to save consumers hundreds of dollars a year on food that never needed to be replaced, while taking a massive bite out of the state's landfill emissions.[3][4]