Chelsea have been fined £10.75m and handed a one-year transfer ban suspended for two years over illicit payments to agents and other individuals.
They have also been given a nine-month Academy transfer ban.
The Premier League has been investigating secret payments that were made by Chelsea between 2011 and 2018.
The transactions came to light during the due diligence process when the new American owners bought the club in 2022.
They self-reported the irregularities to the Premier League, the FA and UEFA.
Chelsea were fined £8.64m (10 million Euros) by UEFA in July 2023 for incomplete financial reporting by the previous owners in 2018 and 2019.
At least six suspect payments to offshore companies connected to transfers were identified.
The seven-figure payments were not in accounts that the club submitted to the football authorities at the time.
The transfers investigated are believed to include the moves of Eden Hazard, Samuel Eto’o and Andreas Christiansen.
Clubs have to provide the FA and Premier League accurate financial information every year. The same applies for UEFA and clubs playing in their competitions.
UEFA’s five-year statute of limitations means they could only investigate breaches going back to 2017/18. Premier League does not have a statute of limitations.
