At what alcohol by volume (ABV) percentage is whiskey typically diluted after distillation?

Whiskey is typically diluted to an alcohol by volume (ABV) percentage of 40% after distillation. This level is significant because it balances the preservation of the spirit's flavors and aromas with ensuring it is safe and enjoyable for consumption. At 40% ABV, whiskey retains enough concentration of flavor compounds while also being smooth enough for most palates. This standard has become widely accepted in the industry for both domestic and international markets.

In addition, while some spirits may be diluted to lower or higher ABV levels, whiskey has established this 40% mark as a benchmark. Higher ABV options, such as cask strength whiskeys, do exist but are typically offered for those seeking a more robust experience, with the general market preference leaning towards the 40% dilution.