The winger, who rejoined Borussia Dortmund on loan in January, earned £12.2million from lucrative sponsorship deals and image rights.
That works out at £235,000 a week, on top of his £350,000 a week wages at Man Utd.
The star’s company, Sancho Management, has assets for 2023 of £8.7million, its accounts show.
That is a rise of £3.4million from £5.3million in 2022.
Sancho, 24, paid himself £5.8million from the firm.
His company also paid £3million in bills, including corporation tax.
He has a bumper contract to wear Nike boots and has signed other lucrative deals with the likes of Nando’s and Pepsi.
The star may leave Old Trafford in the summer after a fall out with boss Erik ten Hag, which saw him exiled from the team before his loan spell in Germany.
Sancho was shut out from United’s first-team squad after accusing Ten Hag of not telling the truth about his absence from the team.
The Dutchman had claimed it was due to poor training performances from Sancho.