As a general rule of thumb, sealed beer is shelf-stable for 6 to 8 months without refrigeration. If stored and refrigerated properly, sealed beer can last beyond its expiration date up to 12 months.
Most beers last beyond the printed expiration date on the package. When stored at room temperature, you can expect beer to last for six to nine months beyond the use-by date. Refrigeration increases this time period to up to two years.