An energetic official he undertook extensive reforms of the city's taxation system, introducing calculations on the basis of arable land ownership.
By the time the French Revolution broke out in July 1789, Bertier de Sauvigny was already unpopular, as part of his duties involved the obtaining of provisions for the Royal army.
During the period of widespread disturbances that preceded and followed the storming of the Bastille on 14 July, rumors were circulated accusing Bertier de Sauvigny of responsibility for food shortages in Paris at the time, On 22 July 1789, Bertier de Sauvigny was in residence at his country house in Compiegne.
An armed party brought him to Paris in a cabriolet (two wheeled carriage), to answer charges of actions aimed at starving the Third Estate.
The ferocity of the lynching of Foullon and Bertier led to protests to which Antoine Barnave, a member of the new National Assembly, responded: "What, then, is their blood so pure?