The Eras Tour opened on March 17, 2023, at State Farm Stadium in Glendale, Arizona, and closed on December 8, 2024, at BC Place in Vancouver, British Columbia. Over 21 months, Taylor Swift played 149 shows in more than 50 cities across five continents, making it the most commercially successful concert tour in history.

The show was built as a journey through her entire catalog. Each night ran about three hours and fifteen minutes, with 44 to 46 songs divided into ten acts, one for each era of her career from her debut album to the newest releases, plus an acoustic set in which she played two rotating surprise songs. The set list grew during the run to include music from The Tortured Poets Department, released in April 2024 while the tour was still on the road.

According to Pollstar, the tour sold 10,168,008 tickets and grossed $2,077,618,725, an average of about $204 per seat. In December 2023 it became the first tour to pass $1 billion in gross, and it ended as the first to pass $2 billion. Merchandise added roughly $200 million in 2023 alone. Fans traveled long distances and spent heavily on hotels, restaurants and costumes in each host city, an effect the press called "Swiftonomics." A Mastercard analysis found restaurant spending near the stadiums rose an average of 68 percent on show days, with nearby hotels up 32 percent.

Demand for tickets overwhelmed sellers when the tour went on sale in November 2022, and the problems with the presale became a national story and the subject of a hearing in the United States Senate. In August 2024, Swift canceled her three shows in Vienna after authorities foiled a terrorist plot against the concerts.

The tour also reached audiences far beyond the stadiums. The concert film Taylor Swift: The Eras Tour opened in theaters in October 2023 with $93.2 million in North America on its first weekend and grossed more than $261 million worldwide, the most ever for a concert film. It drew 4.6 million views in its first three days on Disney+ in March 2024. The Eras Tour Book, released in November 2024, sold 814,000 copies in its first two days.

The tour earned a Guinness World Record, and it was at an Arrowhead Stadium show in Kansas City in July 2023 that Travis Kelce tried to give Swift a friendship bracelet, the first step toward their engagement.