The age limit for the UPSC Civil Services Examination varies depending on the candidate's category. Generally, the minimum age is 21 years, while the maximum age limit is 32 years for general category candidates. However, there are age relaxations for various reserved categories, such as OBCs (3 years) and SC/STs (5 years). Candidates must ensure they meet these age criteria while applying for the examination. Understanding the age limitations is essential for aspirants to plan their preparation timeline effectively, maximizing their chances of success within the permissible age frame.