Before the Bachelor's Degree has been operational for six years, and four in the case of Master's degrees (the date that they were recorded in the Spanish Ministry of Education's Registry of Universities, Centres and Degrees – RUCT), the official degrees must undergo an accreditation process to ensure that the curriculum is being taught in accordance with the initial project. If the renewal is accredited, it will be recorded again in the RUCT.

To maintain the accreditation, the degrees must obtain a positive accreditation report once it has been shown that the corresponding curriculum is being taught in accordance with its initial project in an assessment that must include an external visit to the institution.

In line with the provisions of its IQS, the assessed centre must establish the centre's committee which will be responsible for writing a self-report. This committee must include representatives of the different interest groups at the centre, such as academic managers, teachers, administrative personnel, students and others considered relevant. Writing the self-report is the culmination of the monitoring process and must meet the standards defined in Guide for the accreditation of Official university Bachelor's Degrees and Master's Degrees.

The Quality Agency organises a number of external assessments each year at centres through a visit by an external assessment committee (CAE), which simultaneously assesses all the official degrees offered. The aim is to ensure that all university degrees have been assessed externally at least once within the period established by the legal requirements.

Accreditations of official degrees are issued by the corresponding Accreditation Commissions and will be made taking the degree monitoring reports, the assessment reports drafted by the Catalan University Quality Assurance Agency (AQU) during the monitoring process and the external assessment reports as the starting point. The accreditation report of a degree may: be positive; be positive with proposals for improvements; contain proposals for non-substantial modifications and, therefore, the new verification of the degree; or propose the withdrawal of authorisation to continue teaching the syllabus.