The evaporation from earlier will occur at a faster rate if a bottle of vodka has been opened, but it will not happen in just a year or two. ... After a decade or so, vodka will slowly loose its flavor possibly making it taste terrible. However, vodka will not go bad. It will get weaker over time.

Does vodka go out of date?

Alcohol has long been celebrated as a great preservative; most spirits don't go bad, in the sense that they continue to be safe to drink in moderation. ... Spirits above 40-per-cent abv (80 proof) don't expire. Anything that's been distilled, such as gin, vodka, rum, tequila or whisky, stops aging once it's been bottled.

How do you know if vodka is expired?

Spirits. With alcohols like gin, vodka or whiskey you don't have to worry about an expiration date. Because they are distilled, they won't expire. You may notice that if a bottle remains unopened for a long time that it may become cloudy, but the taste or alcohol content will not change.