Whether it reaches that figure, it still establishes a record for the 27-year-old singer and songwriter, making it her fourth album in a row to exceed first-week sales of 1 million copies.
Swift's 1.05 million US sales of "Reputation" came despite the singer keeping the album from streaming services and gave her the best-selling album of 2017.
Taylor Swift and Ed Sheeran attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. Other big debuts include 2014's "1989", 2012's "Red", and 2010's "Speak Now".
This million-sales week does give Swift a leg up over Adele in one respect, though: Since Nielsen Music began electronically tracking music sales in 1991, Swift is now the sole artist to have four million-selling weeks.
The record is now on track to sell an estimated 1.5 million in its first week - and that's all without putting the album on streaming services. After speculation swirled that Taylor Swift's new song "Dress" was about her close friend Ed Sheeran, he ended those rumors on Tuesday, November 14.
Swift's latest bolted out of the gate Friday with sales of more than 700,000 copies in the first 24 hours, Nielsen reported, and it had reached 925,000 by the end of Sunday.