Robert Child, 37, admitted he murdered his mother Janice in her home in Woolton, Liverpool, back in March. The body of Janice was found locked in the utility room of her home.
This week, Liverpool Crown Court heard Mr Child transferred £25,000 into his bank account the day before Janice was killed.
It is believed Mr Child, who denies killing her for financial gain, was £32,000 in debt at the time.
Philip Walker, who worked with Mr Child at the University of Liverpool, told the court he forwarded a message in February sent by his mother.
Mrs Child told her son to stockpile food because of the coronavirus pandemic.
The court heard he referred to his mother as “the Brexit-voting halfwit”.
Mr Walker, who shared an interest in crypto currency with the defendant, said: “He was against Brexit.”
The court heard Mr Child claimed to be a doctor, despite not having completed a PhD, and told friends he worked as an analyst for Manchester United.
Mrs Child was found with 31 wounds, believed to have been caused by a hammer and another weapon.
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On their way to the police station, Mr Child said: “I only wanted to show her my new car.”
Ms Ireland added: “I took her to mean Janice, he didn’t specifically say her name.”
He said his mother had “cut him out of her life” for a period of time.
Mr Child claimed she did not approve of his previous partner due to the “colour of her skin” but they had reconciled since.
Financial investigator Adrian McGrath told the court Mr Child was more than £32,000 in debt at the time of his mother’s death.
He also had two county court judgments against him for £16,000.
Mr McGrath found Mr Child had a joint savings account with his mother which had more than £14,000 in.
This would have been enough to cover the cost of the Jaguar and he would have been able to access the money without his mother’s signature.
The court heard a passbook was needed to credit or debit the account and only one was issued.
The case was adjourned for today. As he pleaded guilty there will be no jury just a judge.
