To receive the benefits associated with the American Express Platinum CDP number, if the number is not featured in your Gold profile, CDP number 633306 must be quoted at the time of reservation.

Hertz code 633306 is a high-value Corporate Discount Program (CDP) code reserved exclusively for American Express Platinum Card members. Using this code when booking a rental provides a suite of premium benefits, including a discount of up to 15% on standard rates and a 4-hour grace period on returns, which can effectively save you a full day's rental fee if you are running late. It also allows for a complimentary one-class car upgrade (subject to availability) and the ability to add a second driver for free. In 2026, this code remains a cornerstone of the Amex-Hertz partnership. To ensure the benefits are applied, the code must be added to your Hertz Gold Plus Rewards profile and you must pay for the rental using your eligible American Express Platinum card. Note that if you cancel your Amex membership, you will lose access to these specific "Platinum" perks, though your standard Hertz membership will remain active.