California does not require an International Driving Permit, but you may need one depending on where you're coming from and how long you're staying

An International Driving Permit (IDP) is not a legal requirement to drive in California. If you hold a valid driver's license from another country, you can drive in California on that license alone for a limited time. However, some situations make an IDP useful or necessary — and a few make it the only document that will work.

The key distinction is between renting a car and driving your own vehicle. Car rental companies almost always require an IDP even if California law does not. Police will not stop you for lacking one, but a rental agency will refuse to hand over keys without it. If you are driving a car you own or a friend's car, an IDP is optional under California law.

How long you can drive on a foreign license also matters. Most countries' licenses are valid in California for up to 10 days as a visitor. After that, you generally need either a California driver's license or an IDP paired with your home country license to continue driving legally.

Key Takeaways

  • California law allows you to drive on a valid foreign driver's license for up to 10 days without an International Driving Permit.
  • Car rental companies require an International Driving Permit even though California does not, so you will need one to rent a vehicle.
  • If you stay longer than 10 days and want to keep driving, you must obtain a California driver's license or carry an IDP with your home country license.
  • An International Driving Permit is issued by your home country's automobile association before you travel, not by California.
  • Police will not cite you for driving without an IDP, but rental agencies, insurance companies, and law enforcement in other states may require one.

When California law does not require an IDP

California Vehicle Code Section 12505 permits visitors to drive on a valid foreign driver's license without an IDP for up to 10 consecutive days. This applies whether you are driving a rental car, a borrowed vehicle, or a car you own. The license must be current and written in English, or accompanied by a certified English translation.

If your license is not in English and you do not have a translation, you should obtain one before driving. A certified translation can be made by a notary public, a consulate, or a professional translation service. Carrying both your original license and the translation protects you if stopped.

During this 10-day window, you do not need an IDP to satisfy California law. A police officer will not cite you for driving without one. However, other parties — your insurance company, a rental agency, or law enforcement in another state — may still ask for one.

When you must have an IDP to rent a car

Nearly every car rental company in California requires an International Driving Permit, regardless of what state law says. Hertz, Enterprise, Budget, Avis, and smaller agencies all enforce this rule. They will not rent to you without one, even if you hold a valid foreign license and are within the 10-day window.

This is a company policy, not a legal requirement. Rental agencies use the IDP as a standardized document that proves your driving history is legitimate and translates your license information into a format their staff can verify quickly. Without it, they assume the risk of renting to an unlicensed driver if your home country's license format is unfamiliar to them.

If you plan to rent a car in California, obtain an IDP before you travel. It is issued by your home country's automobile association — not by California — and typically takes one to two weeks to arrive by mail. Some associations offer rush processing for an additional fee.

Staying longer than 10 days: your options

If you remain in California beyond 10 days and want to continue driving, you have two paths. The first is to obtain a California driver's license by passing the written test and driving test. The second is to carry an IDP paired with your valid home country license.

Getting a California license takes time. You must visit a DMV office, pass a vision test, pass a written knowledge test (available in multiple languages), and pass a behind-the-wheel driving test. The entire process typically takes several weeks to schedule and complete. You will also need to provide proof of identity, proof of California residency, and proof of your Social Security number.

Carrying an IDP with your home country license is faster if you already have the IDP. However, if you did not obtain one before traveling, you cannot get one in California — you must request it from your home country's automobile association, which requires mailing documents back home or using an international mail service. This can take several weeks.

What happens if you drive without an IDP after 10 days

Driving on a foreign license alone after the 10-day period expires is a violation of California Vehicle Code Section 12505. You can be cited and fined. The fine is typically $250 to $1,000, depending on the court and whether you have prior violations.

A citation does not result in arrest for a first offense, but it creates a record. If you are stopped again, the penalty increases. More importantly, if you are involved in an accident, your insurance may deny a claim if you were driving without a valid license under California law.

The 10-day clock starts when you first drive in California, not when you arrive. If you arrive on a Monday and do not drive until Wednesday, your 10 days begin on Wednesday. Keep track of this date so you know when you must stop driving or obtain an IDP or California license.

How to get an International Driving Permit before traveling

An International Driving Permit is issued by your home country's automobile association, not by any California or U.S. agency. You must contact that association directly and request one. The process varies by country, but most require you to submit your home country license, a passport-style photo, a completed process form, and a fee.

Common issuing organizations include the American Automobile Association (AAA) for U.S. citizens, the Canadian Automobile Association for Canadians, and the Automobile Association for British drivers. If you are from another country, search for "[your country] international driving permit" to find the correct issuing body.

Processing typically takes one to two weeks by standard mail. Some associations offer expedited processing for an additional fee, usually delivering within three to five business days. Order your IDP at least two weeks before your trip to California to avoid delays.

What an IDP covers and does not cover

An International Driving Permit is a translation document, not a license. It translates your home country license into multiple languages and confirms that you hold a valid license at home. It does not grant you any driving rights you do not already have, and it does not replace your home country license.

You must carry both your IDP and your original home country license when driving. Police and rental agencies will ask to see both. An IDP alone, without the underlying license, is not valid. If your home country license expires while you are in California, your IDP becomes invalid as well.

An IDP is typically valid for one year from the date of issue. If you plan to stay in California longer than a year, you will need to renew it through your home country's automobile association before it expires.

Insurance and liability with a foreign license

Driving in California on a foreign license does not automatically disqualify you from insurance coverage, but you must disclose your license status to your insurer. If you rent a car, the rental company's insurance will cover you during the rental period, provided you have an IDP or are within the 10-day window.

If you are driving a personal vehicle or a friend's car, you need your own insurance policy or to be listed on the vehicle owner's policy. Some insurance companies will not insure a driver with only a foreign license, or they will charge a higher premium. Contact your insurer before driving to confirm coverage.

If you are involved in an accident and were driving without a valid license under California law (for example, after the 10-day period expired without an IDP or California license), your insurer may deny your claim. This can leave you personally liable for damages.

Frequently Asked Questions

Can I drive in California on just my home country license without an IDP?

Yes, for up to 10 days. After that, you need either a California driver's license or an IDP paired with your home country license to drive legally. Car rental companies, however, require an IDP regardless of the 10-day rule.

Do I need an IDP if I am only visiting for a week?

Not under California law, but yes if you plan to rent a car. Rental agencies require an IDP even for short visits. If you are driving a personal vehicle or borrowing a car, an IDP is optional during the first 10 days.

What if my home country license is not in English?

You must carry a certified English translation along with your original license. A notary public, consulate, or professional translation service can provide one. Some rental companies will accept an IDP in place of a translation.

Can I get an International Driving Permit in California?

No. An IDP is issued only by your home country's automobile association before you travel. California has no authority to issue one. If you did not obtain one before arriving, you cannot get one in California.

What is the difference between an IDP and a California driver's license?

An IDP is a translation of your existing home country license and is valid for one year. A California driver's license is a new license issued by California and is valid for five to ten years. If you plan to stay in California long-term, a California license is the permanent solution.