The Tokyo District Court said that the approval is for prosecutors to investigate further his third allegation of breach of trust for causing Nissan a loss of 1.8 billion yen ($16 million) in 2008.
Sunday's extension allows prosecutors to keep Ghosn at the Tokyo detention house until New Year's Day.
Ghosn and another executive Greg Kelly were arrested Nov. 19 and charged with underreporting Ghosn's income for 2011-2015 by about 5 billion yen ($44 million). Other charges for additional underreporting of Ghosn's pay by about 4 billion yen ($36 million) are pending.
The latest allegation filed Friday only applies to Ghosn and came a day after the court rejected prosecutors' request for a longer detention of Ghosn and Kelly. Kelly's bail request filed by his lawyer on Friday is still pending and could come sometime after Christmas.
Prosecutors allege that Ghosn in 2008 transferred a private investment loss worth more than 1.8 billion yen ($16 million) to Nissan by manipulating an unspecified "swap" contract. Ghosn also profited by having the automaker transfer a total of $14.7 million to another company to benefit himself and that company's owner, who helped in the deal, prosecutors said. Japan's NHK public television said the company owner is a Saudi Arabian acquaintance of Ghosn.
The arrest of an industry icon has triggered international attention. Prosecutors have been criticized for separating the same allegation aa tactic to detain Ghosn and Kelly longer. They say Ghosn and Kelly are flight risks. No trial date has been set.
The scandal also raised concerns over the Japanese automaker and the future of its alliance with Renault SA of France.
Ghosn's downfall is seen by some as a maneuver by others at Nissan to gain power in the alliance.
Renault in 1999 sent Ghosn to turn around Nissan, then on the verge of bankruptcy, and he led its rise to the world's second-largest automaker.
Nissan has dismissed Ghosn as chairman and Kelly as a representative director since the allegations were made. Nissan has put off a decision on Ghosn's replacement.