National UHG Rentals 2026: Top Contract IDs

Navigating Corporate Car Rentals in Boise

The official UHG internal code now checks badges extremely strictly at National locations. Relying on unauthorized corporate credentials can result in forced cancellations at the desk, leaving you stuck paying the exorbitant walk-up rate. For a recent corporate retreat in Boise, Idaho, I evaluated alternative institutional codes that provide similar or better baseline discounts.

Verified National Contract IDs

If you have affiliations with these institutions, they offer substantial savings and built-in protections:

• UAB (Contract ID: XZ55282): The strongest business option here. It secures corporate account rates and includes a Damage Waiver (DW) alongside $1MM Combined Single Limit (CSL) liability.
• Florida State University (Contract ID: XZ55622): A reliable corporate discount code for standard business rentals, ideal if you already carry premium credit card insurance.
• Ohio University (Contract ID: 5004055): A standard educational institution discount that consistently yields solid reductions on base rates.

Booking Mechanics and Loyalty Integration

Navigate to National's booking interface and expand the "Account Number / Coupons" dropdown menu. Enter your chosen alphanumeric string directly into the "Contract ID" field. If your Emerald Club profile is linked to the reservation, you gain immediate counter bypass privileges. At Boise Airport, this means walking straight to the Emerald Aisle, selecting your preferred vehicle, and driving to the exit booth. Official university business codes often trigger an underage fee waiver for eligible renters under 25 traveling on approved business.

Counter Reality: Expect Scrutiny

Codes heavily loaded with insurance perks, particularly UAB's XZ55282, trigger high scrutiny at the exit booth. The agent will request a physical university ID, a faculty travel authorization letter, or a matching corporate email address. Failing to produce valid credentials means the contract reverts to standard public pricing instantly.

One thing worth flagging right now: National locations in the Mountain West have started deploying AI-powered return bay scanners that photograph every panel of your vehicle in 4K before you even hand over the keys. Renters at BOI are reporting $300–$600 charges for "micro-abrasions" that were clearly pre-existing. Document your pickup condition with timestamped video or you're handing them a blank check.

Frequently Asked Questions

Does the included Damage Waiver on the UAB code cover windshield strikes on Idaho gravel roads?
Yes, the corporate DW covers glass and tire damage, but only if the vehicle remains on officially maintained county or state roads. Taking the rental off-grid into unpaved mountain paths voids the waiver entirely.

What happens if a sudden snowstorm forces me to abandon the car at a downtown Boise hotel instead of the airport?
Using a corporate code does not waive unauthorized drop-off fees. Leaving the vehicle outside the originally booked return location will incur a recovery fee upwards of $150, plus the daily rate until National personnel physically retrieve the keys.