Taylor Swift's Eras Tour is the largest concert tour in human history, with 141 stops, 10.1 million attendance and a revenue of $2.077 billion.
It is estimated that the current schedule of BTS' tour will have about 81 days, and earning maybe $1 billion.
Curiously, it has fewer stops in North America and Europe, where more revenues are expected, and more stops in Latin America and Southeast Asia, with unreliable numbers which Touring Data might not count.
When BTS' archenemy toured the world in 2024, Touring Data simply refused to calculate her tour portions outside of USA, and only counted her 6 stops in USA. Touring Data might do the same for BTS this time.
BTS added some dates in USA, although the schedule given precludes such possibilities in Europe and LATAM.
There are some unannounced portion of tours to be revealed sometime in early 2027.
If all members agree, they could extend the tour to 2028, which will probably make it able to exceed Taylor Swift's records, although chances are she will announce a new tour in 2027 to thwart them when that becomes a possibility.
Given how Hybe has behaved, it is quite possible that Hybe will try to up the ante in 2027, to try to surpass Taylor Swift's 2 billion. Although the figure will probably be less than the 'inflation adjusted amount' after all is said and done, Hybe will push for the raw number to exceed 2.077 billion just to show BTS' power to the world.
I think that will be meaningless , since Taylor Swift became the Person of the Year in 2023, an honor BTS will NEVER get thanks to the Korean incels, and has entered the history books while BTS will have to share the spot with BlackPink, Twice, Stray Kids and BTS' archenemy mentioned above, but Hybe is the kind of the company which does put an importance to such labels