
Yes, you can rent a car at 21 in Missouri, but your options will be limited and you will almost certainly have to pay a Young Renter Fee—a daily surcharge imposed on drivers under the age of 25. While Missouri state law sets the minimum legal age for entering a rental contract at 18, major rental companies set their own higher age policies. The key is to book with the specific companies that accommodate 21-year-olds and to be prepared for additional costs and requirements.
The most significant factor is the Young Renter Fee, which typically ranges from $25 to $50 per day. This fee is charged on top of the base rental rate and taxes. Furthermore, you will face a more restricted selection of vehicle classes. Rental companies often exclude premium, luxury, SUV, and minivan categories for drivers under 25, limiting you to economy or compact cars.
| Rental Company | Minimum Age to Rent | Young Renter Fee (Under 25) | Vehicle Class Restrictions for Under 25 |
|---|---|---|---|
| Hertz | 20 | ~$27 per day | Premium, Luxury, SUVs, Minivans |
| Enterprise | 21 | ~$25 per day | Premium, Luxury, SUVs, Minivans |
| Avis | 21 (18 at some airport locations) | ~$27 per day | Specific high-end models |
| Budget | 21 | ~$27 per day | Specific high-end models |
| Dollar | 21 | ~$30 per day | Full-size and above, SUVs, Vans |
Beyond age and fees, rental companies will require you to present a valid driver's license held for at least a year and a major credit card in your name. Debit cards are often not accepted for young renters, or if they are, they come with additional proof-of-return-travel requirements and security holds. To ensure a smooth rental process, book directly with companies like Hertz, Enterprise, or Avis that have clear policies for 21-year-olds, and always call the specific rental location to confirm all requirements before your trip.

It's possible, but expect to pay extra. I just went through this. The big companies like Enterprise and Hertz will rent to you at 21, but they slap on a "young renter fee" every single day. It adds up fast. My advice? Stick with the major brands, avoid airports if you can—their fees are often higher—and be ready to show your license and a credit card. Don't even bother trying to rent an SUV; they'll usually say no.


