All companies involved in digital advertising are invited to join and share in the benefits of IAB Membership. Membership is held at the company level and benefits cascade down to individuals, including the ability to participate in industry-facing Committees, Councils, and Working Groups. Membership dues are based on factors appropriate to the type of member, and all membership terms are based on for the calendar year and may not be negotiated or bartered. Dues for members who join mid-year are prorated.