The breakfast menu will be available at all locations from 7 a.m. to 11 a.m., the company said in a release.
Some Taco Bell locations will serve breakfast for extended hours.
Taco Bell has been testing its breakfast menu for more than a year.
Key menu items include its Breakfast Crunchwrap, and a Waffle Taco.
The brand also sells "Mountain Dew A.M."-a special mix of orange juice and Mountain Dew.
Breakfast is the fastest-growing category for restaurant brands, according to Taco Bell.
McDonald's is considering offering its breakfast for extended hours.