How Long Does Margarine Last?
Opened margarine lasts 2–3 months in the fridge, and an unopened package about 6 months. Stick margarine freezes well for up to 1 year. Keep it refrigerated rather than on the counter.
Margarine — opened
shelf life- Unopened: 6 months in the fridge
Fridge at 40°F (4°C) or below · freezer at 0°F (−18°C). Freezer times are for best quality; frozen food stays safe longer.
Margarine is a butter substitute made by emulsifying vegetable oils with water, salt and sometimes milk. Sticks are about 80 percent fat like butter, while soft tub spreads contain more water and less fat. That extra water, along with toast crumbs left behind in the tub, is why soft spreads mold and separate sooner than sticks.
How to store margarine
- Use a clean knife every time; crumbs, jam and egg left in a tub are the usual starting point for mold.
- Keep the inner seal or a piece of parchment on the surface of tub margarine and snap the lid on fully to slow drying and off-flavors.
- Do not store margarine on the counter. Soft spreads separate into oil and water when warm and do not recombine properly.
- Freeze stick margarine in its box inside a freezer bag, and thaw it in the fridge before baking. Light and whipped spreads turn watery when frozen.
How to tell if margarine has gone bad
- Dark or fuzzy mold specks, usually around crumbs or along the rim of the tub.
- A smell of paint, putty, soap or old frying oil, which means the oils have gone rancid.
- Beads of water or a layer of oil separating out, with a grainy or curdled look.
- A darker, waxy, dried-out layer on the surface that tastes stale.
Bacteria that cause food poisoning usually do not change the look, smell or taste of food. Go by the time limits first, and the signs above second.
Margarine shelf life chart
| State | Fridge | Freezer | Pantry |
|---|---|---|---|
| Opened | 2–3 months | 1 year | Not recommended |
| Soft tub spreads are best within 1–2 months of opening and do not freeze as well as sticks. | |||
| Unopened | 6 months | 1 year | Not recommended |
| Or the printed date, whichever comes first. | |||
Not safe = perishable: no more than 2 hours at room temperature (1 hour above 90°F / 32°C). Not recommended = possible, but quality suffers or it serves no purpose.
Frequently asked questions
Does margarine need to be refrigerated?
Yes. Manufacturers and USDA guidance both call for refrigerating margarine. A stick left out for an hour or two to soften for baking is fine, but margarine stored at room temperature separates, turns rancid faster and, in the case of soft tub spreads, can grow mold.
How long does margarine last after opening?
Opened margarine lasts about 2–3 months in the fridge. Sticks tend to reach the full 3 months, while soft, light and whipped tub spreads contain more water and are better used within 1–2 months. Keeping crumbs out of the tub makes the biggest difference.
Does margarine last longer than butter?
Roughly the same once opened, and somewhat longer unopened. Unopened margarine keeps about 6 months refrigerated versus 1–3 months for butter. Once in use, both last a few months and both eventually go rancid; margarine's vegetable oils oxidize into a paint-like smell rather than butter's sour, cheesy one.
Can you freeze margarine?
Yes, stick margarine freezes well for up to 1 year. Overwrap the box to keep out odors. Tub spreads, especially light or reduced-fat versions with a high water content, tend to separate and become grainy after freezing, so they are better bought in sizes you can finish from the fridge.
Related foods
| Food | Fridge | Freezer | Pantry |
|---|---|---|---|
| Butter Opened |
1–3 months | 6–9 months | 1–2 days |
| Ghee Opened |
6–12 months | 1 year | 3 months |
| Vegetable Oil Opened |
Not recommended | Not recommended | 3–6 months |
| Coconut Oil Opened |
1–2 years | Not recommended | 1–2 years |
| Cream Cheese Opened |
2 weeks | Not recommended | Not safe |
| Bread Store-bought |
Not recommended | 3 months | 5–7 days |
Reviewed 2026-09-20. Times follow published USDA FoodKeeper / FSIS, FDA and CDC storage guidance; where sources differ we use the shorter time. How we compile this data.