Paul Meunier-Collins nodded yes in Moncton court on Thursday when asked by Judge Troy Sweet if he was guilty of fraud.
Meunier-Collins was the financial administrator at St. Augustine Catholic Church when the RCMP received a complaint from the Moncton archdiocese in May 2014, Codiac RCMP said.
The archdiocese commissioned an audit that found more than $150,000 had been taken from church coffers between 2003 and 2014.
The RCMP conducted an investigation and charged Meunier-Collins in April 2016.
In court Thursday, the Crown withdrew a charge of theft. Sentencing of Meunier-Collins on the fraud charge was scheduled for April 21, at 9:30.
After pleading guilty, Meunier-Collins left the courthouse, refusing to comment.
His sentencing is expected to take a few hours, and victim impact statements will be submitted. The charge comes with a maximum prison sentence of 14 years.