Yes, you can use an IBM corporate discount code (known as a CDP or Counter Discount Program number) for a Hertz rental, provided you are an eligible employee, retiree, or authorized contractor of the company. Corporate codes like IBM's are designed to offer significantly lower rates, waived young-driver fees, and often include "Loss Damage Waiver" (LDW) insurance as part of the negotiated contract. In 2026, you can enter the CDP number in the "Discount Code" field when booking on the Hertz website or mobile app. However, be aware that you must be able to provide proof of eligibility (such as a company ID or a current pay stub) at the rental counter if requested. Using a corporate code for personal travel ("leisure use") is sometimes permitted by the company contract, but using it without any affiliation is considered a violation of the rental terms and can result in the voiding of insurance coverage or being charged the full retail rate upon car return.