Wells Fargo account holders can order foreign currency cash online, or at a branch, and have delivery within 2-7 business days. Use the exchange rates listed below or the convenient Currency Calculator tool to determine how much foreign currency cash you want to order.You can order foreign currency cash online, using the mobile app, or in person at a Wells Fargo branch and have currency delivered within 2-7 business days. For international wires to Mexican banks be sure to include the CLABE account number in the Beneficiary instructions to ensure correct payment.