Adviser Ezzat-Daniel Nesseim has been permanently banned from the industry.

He engaged in misleading and deceptive conduct, is not of good fame or character and is likely to contravene financial services law, the Australian Securities and Investments Commission says.

The regulator found Mr Nesseim provided backdated client certificates to throw its inquiries off track. He also gave false answers to the regulator while under oath.

Mr Nesseim was an authorised representative of Libertas Financial Planning from last June to this March.

He was executive business financial adviser with Westpac from August 2006 to March 2013 and an authorised representative with Fortnum Private Wealth from June 2013 to last June.