A graduate degree from a recognised university is required of the candidate. Age Limit for UPSC Civil Services Exam: Candidates must be at least 21 years old and no older than 32 years old. EWS & General Category: 32 years; 6 tries. A graduate of a recognised university is required of the candidate. To become an IAS officer, no minimum percentage is required. An IAS officer can be a graduate from any field.