Sydney businessman John Kinghorn, founder of RAMS Home Loans and Allco Finance Group, has pleaded not guilty to fraud offences after being charged by the Australian Federal Police following a "complex" eight-year investigation.

The AFP alleges that Mr Kinghorn, 76, fraudulently concealed his beneficial ownership and control of corporate entities, avoiding more than $30 million in tax obligations.

Mr Kinghorn was served with a court attendance notice on October 6. The matter was briefly heard at Sydney's Downing Centre Local Court on Tuesday morning, where a plea of not guilty was entered to all charges. The matter is adjourned until February 6.

Mr Kinghorn is charged with one count each of dishonestly influencing a commonwealth public official and defrauding the commonwealth, offences that carry a maximum penalty of 10 years' imprisonment.