This article presents, firstly, all the gender mainstreaming and subject-specific obligations that the Catalan Equality Act (Law 17/2015) establishes for the municipal sphere. Secondly, it goes on to explain what the city councils are actually implementing and what they are not. Thirdly, the causes of compliance and non-compliance are analysed. Finally, the paper proposes strategies for the implementation of gender policies at the municipal level. This article considers that the approval of the Catalan Equality Act has had a positive impact on the implementation of local gender policies, although there are aspects that still need to be worked on to make it easier for councils to truly comply with the provisions of the law.