Best-before dates and markdown buying in Canada: what the date does and does not promise
90 days is the number that decides whether a Canadian food package even carries a best-before date. Foods with a shelf life of 90 days or less, fresh fruit and vegetables and a few other products excepted, are required to carry either a best-before date or a packaged-on date, while foods expected to keep longer than 90 days are generally considered shelf stable and need no date at all (s1). That single threshold explains the markdown shelf: the items marked down hardest are the short-dated ones, and the date on them is the most misunderstood label in the store.
Four labels, four different promises
The Canadian Food Inspection Agency’s date-label page and Health Canada’s advisory draw the distinctions plainly (original element: comparison_table). Only one of the four labels carries a do-not-eat rule.
| Label | What it actually promises | Markdown rule |
|---|---|---|
| Best before | How long a properly stored, unopened product keeps its freshness, taste, and nutritional value; not an indicator of food safety, before or after the date (s1) | Can be bought and eaten after the date; expect quality loss, and eat spoilage-prone foods quickly (s1, s2) |
| Expiration date | Required only on a short list: formulated liquid diets, meal replacements, nutritional supplements, infant formula, very low-energy diet foods, and human milk fortifiers (s1) | Never buy, sell, or eat after this date; discard it (s1) |
| Packaged on | Used on food packaged at the store with a durable life of 90 days or less, paired with durable-life information on the label or a poster beside the food (s1) | Read it together with the durable-life note; the packing date alone is not a deadline (s1) |
| Use by | In Canada this wording may replace best before for prepackaged fresh yeast only (s1) | Treat it exactly as a best-before date, because legally that is what it is (s1) |
The best-before row is where the money is. The CFIA states that best-before dates are not indicators of food safety, neither before nor after the date, and that you can buy and eat foods after the date has passed, with the honest cost attached: the food may lose freshness, flavour, and nutritional value, and its texture may change, as when vitamin C content in juice decreases (s1). Health Canada’s advisory says the same thing in the same order: best-before dates are about food quality and not food safety, foods likely to spoil should be stored properly and eaten as quickly as possible, and food past an expiration date should not be bought or eaten (s2). It is also, the CFIA notes, not illegal to sell food past its best-before date (s1), which is precisely why the markdown rack exists.
Where the official guidance itself disagrees, slightly
One older Health Canada explainer is more cautious than the two pages above: it recommends not consuming unopened products that have passed their best-before date, while adding the same quality reasoning and the warning not to rely on sight, smell, or taste to judge safety, when in doubt, throw it out (s3). Both positions agree on the underlying facts: the date tracks quality, and senses cannot certify safety. Where they differ is the recommendation built on those facts. For a markdown shopper, the practical reading is the stricter behaviour on the riskier foods: the closer an item is to spoiling by nature, the less the quality-versus-safety distinction should be stretched, whatever the discount.
The markdown decision: label, seal, spoilage risk
Three checks, in order, replace the invented “it keeps X days past the date” charts that no official Canadian source publishes (original element: decision_framework).
Label first. Expiration date? Stop, that small category of products is out, full stop (s1). Best before, packaged on, or the yeast-only use by? Continue.
Seal second. A best-before date applies to unopened products only; once opened, the food’s shelf life may change (s1, s2). Health Canada’s one concrete opened-food window is worth memorizing because it is the only kind of number the sources give: once a package of lunchmeat is open, it should be consumed in 3 to 5 days, for safety reasons tied to contamination (s2). An opened markdown item is therefore a cook-now or freeze-now item, not a fridge resident. Freezing changes the frame again: some foods can be frozen to keep beyond their best-before date, and once frozen the date is no longer valid, with freezing time depending on the type of food and its ingredients (s3).
Spoilage risk third. Foods likely to spoil get the short leash both sources prescribe: store them properly and eat them as quickly as possible (s1, s2). Harmful micro-organisms can grow in food even when it does not appear spoiled (s1), and Health Canada is blunt that you cannot tell whether food is unsafe by its smell or taste (s2). A shelf-stable markdown, the canned and dry goods that often carry a voluntary date despite needing none (s1), sits at the opposite end: the date passing is a quality note, not an event.
The shelf-edge routine
- Name the label out loud. Best before, expiration, packaged on, or yeast use by, the category decides everything that follows.
- Check the seal. Unopened keeps the date’s meaning; opened moves the item to the 3-to-5-day style window and tonight’s plan (s2).
- Assign the item a fate before the cart. Eat quickly, freeze today, or pantry shelf, one of the three, decided at the shelf, using the spoilage check above.
- Discount the quality, honestly. Past-date flavour, texture, and nutrient loss are the real price of the markdown (s1); if the household will notice and waste it, the saving was imaginary.
What success looks like: every markdown item leaves the store with a label-based decision already made, the spoilage-prone ones are eaten or frozen first, and nothing in the fridge is being judged by a sniff test the official guidance explicitly rejects (s2).
One last protection sits with the retailer, not the shopper: it is illegal for a manufacturer, producer, or retailer to change a best-before date if doing so makes the label false or misleading, or the food unsafe (s1). The date can be argued with, within the rules above. It cannot be quietly rewritten, and a shopper who knows which label they are looking at rarely needs to argue at all.
General information only, not financial or health advice. Date-label definitions are from the Canadian Food Inspection Agency and Health Canada pages cited, checked Nov 1, 2026. When in doubt about a specific food, throw it out, and follow the storage instructions on its package.
, Penny Hughes, Money Writer. Saving Desk