Monika Juneja, a Guildford borough councillor until she did not seek re-election last week, had denied eight charges and was due to face a trial.
But she pleaded guilty to three counts of forgery, obtaining pecuniary advantage by deception, and wilfully pretending to be barrister as the trial at the Old Bailey got under way.
Juneja, of Doverfield Road, Guildford, is awaiting sentencing.
Offences she admitted included giving false qualifications to Bromley Council, and constructing false letters from the University of Greenwich and the BPP Law School outlining qualifications she did not hold, between July 2000 and May 2014.
The 36-year-old had denied three other counts of fraud, which related to providing recruitment agencies with untrue or misleading information about her CV.