Former ACT MP David Garrett can reapply to practise law after a disciplinary hearing in Auckland, as he has effectively served the year's suspension imposed on Friday.
Mr Garrett had previously pleaded guilty to a charge of negligently failing to tell the truth brought by the Law Society's Auckland standards committee.
The charge relates to a court affidavit in 2005 during his sentencing for using a dead baby's name to gain a passport decades earlier.
The affidavit did not reveal a previous criminal conviction from an assault in Tonga.
The Lawyers and Conveyancers Disciplinary Tribunal banned Mr Garrett from practising law for 12 months, but this time has already lapsed after he unsuccessfully sought to have his certificate approved in September last year.
He was also ordered to pay more than $8000 in court costs to the Law Society.
Mr Garrett resigned from Parliament last year after news of the offences was revealed.