No, you most likely won't be eligible for OBC-NCL reservation benefits during UPTAC counselling if you cannot submit the income certificate on time.The income certificate is a crucial document for verifying your OBC-NCL (Non-Creamy Layer) status. UPTAC likely requires this document to ensure you meet the creamy layer criteria for availing OBC reservation benefits.

While unlikely, there might be a provision for submitting the income certificate later in the counselling process. Carefully review the official UPTAC website or counselling brochure for any such information.

I hope it helps!