Court documents filed Wednesday deny "without prejudice" the 39-year-old singer's request to replace her father, Jamie Spears, with Bessemer Trust Company of California, as the conservator of her estate.
The request was filed by Spears' legal team in November, NPR reported.
The rejection comes less than a week after Britney Spears testified that she faced abuse at the hands of her family and has been denied the ability to have another child due to being unable to remove an intrauterine device.
Jamie Spears has overseen the singer's $60 million fortune since 2008 when Britney Spears suffered a public mental breakdown and was placed in psychiatric hold.
According the court documents filed Wednesday, the court rejected the "Toxic" singer's request finding her to be "substantially unable to manage his or her financial resources or to resist fraud or undue influence."
"This is not right at all," she said.