Yes, the age of the co-applicant can affect the loan tenure for an education loan. If the co-applicant is nearing retirement, the loan tenure may be shorter. Lenders prefer to sanction loans to co-applicants who have a stable source of income and can repay the loan within the repayment period. If the co-applicants age exceeds the lender's specified age limit for loan repayment, they may ask for additional collateral or a higher interest rate to compensate for the risk.