Banks are closed today because it is Columbus Day, which is observed as a federal holiday by the U.S. Federal Reserve System, leading most banks to close their branches on this day. Additionally, Indigenous Peoples' Day is also recognized on this date in various states and cities, further contributing to the holiday observance. However, some bank branches may be open but will treat the day as a holiday for transactions. ATMs remain accessible, and banking via apps or online services continues to be available.