How Long Does Soda Last?

Unopened regular soda typically maintains good quality for 6-9 months past the printed date when stored properly, while diet sodas maintain quality for about 3 months past the printed date. The actual shelf life depends on storage temperature and container type.

WestAir supplies gases for beverage carbonation across California and Arizona.

What Factors Affect How Long Soda Stays Fresh?

Temperature, light, and container type all impact how long soda stays fresh in storage. Understanding these factors helps you maintain product quality and reduce inventory waste.

• Temperature control: heat kills carbonation faster than anything else. Warehouse temperatures above 85°F will noticeably shorten shelf life. Keep it between 40-75°F – closer to 40°F if you can swing it.
• Light exposure: direct lighting breaks down artificial colors and some flavor compounds over time. Store your inventory away from direct light, or rotate stock so nothing sits under the fluorescents for months.
• Container type: cans hold up better than plastic bottles over time. Aluminum blocks light and air better, so canned soda keeps its flavor and fizz longer. This makes cans a smart choice if your inventory sits for a while.

How Should You Store Soda for Maximum Shelf Life?

Cool, dark storage is your best bet for keeping soda fresh as long as possible. The ideal temperature range is 40-75°F, with temperatures closer to 40°F providing the best preservation.

Keep your soda inventory away from heat sources like loading docks, windows, or HVAC equipment. Even short exposure to temperatures above 85°F can noticeably affect taste and carbonation levels.

Dark storage areas work better than well-lit warehouse sections. Fluorescent lighting won’t ruin soda quickly, but it does break down flavors and colors over months of exposure.

Stack cases on pallets, not directly on concrete. Concrete transfers cold and moisture, and those temperature swings mess with your product.

Maintain good air circulation around your storage area. Poor ventilation creates humidity pockets that damage packaging and the product inside.

For retail display areas, rotate stock regularly and avoid placing soda near heat-generating equipment like grills or coffee machines.

Does Soda Go Bad or Just Lose Quality?

Soda doesn’t spoil in a way that makes it unsafe to drink, but it does lose flavor, carbonation, and visual appeal over time. Here are the main changes you’ll notice:

• Carbonation loss: this happens first and fastest. Opened containers lose fizz within days, while unopened soda gradually loses carbonation over months or years depending on storage conditions.
• Flavor changes: these develop more slowly than carbonation loss. Artificial sweeteners can develop bitter aftertastes, while regular sodas might taste stale or develop metallic notes from extended can contact.
• Color fading: affects darker sodas more than clear ones. Colas and root beers can turn lighter or develop an uneven appearance, especially after light exposure.

Safety-wise, you’re fine. Soda’s acidity and preservatives prevent harmful bacterial growth, even well past the date on the can.

But customers notice flat or off-tasting soda immediately, which can hurt your bar or restaurant reputation even if the product isn’t technically “bad.”

How Long Does Soda Stay Fresh After Being Opened?

Opened soda retains its carbonation for 3-4 days when properly sealed and refrigerated, though quality gradually decreases over this time. At room temperature, carbonation disappears even faster and flavors start to change within a day.

The container type affects how well opened soda keeps. Plastic bottles with tight caps hold carbonation better than opened cans since you can minimize air exposure. Canned soda has the shortest lifespan once opened.

For restaurants and bars, opened soda should be used within the same service period when possible.

Keep opened containers as cold as possible without freezing. Cold temperatures slow down both carbonation loss and flavor changes significantly.

What’s the Difference Between Best-By Dates and Expiration?

Best-by dates indicate peak quality rather than safety, while expiration dates suggest when products might become unsafe to consume. Most sodas only carry best-by dates since they don’t spoil in dangerous ways.

Manufacturers set best-by dates conservatively to ensure consistent taste and carbonation.

Most businesses stick to manufacturer dates, and for good reason. Consistent quality protects your reputation. Nobody wants to explain why the soda tastes weird.

Should You Rotate Soda Stock Like Other Beverages?

Yes, soda inventory benefits from proper rotation using the FIFO (First In, First Out) method just like other beverages. This prevents older stock from sitting in storage while fresher products get sold first, which is especially important for high-volume operations.

Mark incoming shipments with received dates if your supplier dates aren’t clear. This makes rotation decisions easier for staff and helps track how long products have been in your inventory.

Consider your turnover rate when planning soda orders. If your soda moves slowly, order smaller quantities more frequently.

Keep Your Soda Fresh and Your Customers Happy

Managing soda quality comes down to two key things: proper storage and smart inventory rotation. Keep it cool, keep it dark, and keep it moving through your system.

Soda that sits too long won’t make anyone sick. But customers will taste the difference… and they’ll remember it. Keep it fizzy, keep it fresh, and you’ll avoid both waste and complaints.

Further Reading: How Is CO2 Added to Soda?

Nick Vasco

Nick is an experienced B2B writer who brings his skill for crafting clear, easily digestible content to the industrial gas space.