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CA CPT Eligibility Criteria 2018-

• Candidates must have registered for ICAI CPT course on or before June 30, 2017, to become eligible to appear for CA CPT December 2018 exam.

• Candidates must have passed or appeared in 10+2 qualifying examination.

As per the above eligibility criteria, you can't apply for CA-CPT 2018(December).

All the best.