No. When you make a reservation via Iberia.com, the price that is shown includes airport taxes.
Please remember that if you choose the pre-booking option, the reservation will be held for 72 hours, during which they can be purchased at any time by visiting the home page and selecting Manage your booking.
If you prefer you can buy your ticket (s) at any Iberia office or Travel Agency. If you choose this latter option, every agency will apply its own table of ticketing fees.
If this period expires without confirming the purchase, the reservation will be cancelled.
If you decide to buy the ticket, the issuing of the ticket (s) and charging to your card are performed automatically.