PNB may close zero-balance accounts inactive for over three years after November 10, 2026. Customers must update KYC details and reactivate affected accounts before the deadline. Mumbai: Punjab National Bank (PNB) has warned customers that certain inactive, zero-balance accounts may be closed after November 10, 2026. The public sector lender has urged affected account holders to update their Know Your Customer (KYC) details and reactivate their accounts before the deadline.