It typically takes around 15 minutes to a few hours to apply for car insurance and coverage can begin the same day you buy it. Most major insurers can give you a personalized quote in 10 to 15 minutes, and if you have all the necessary information ready, the application process can be fast. However, it may take longer if you don't have the required information. Once you complete your application, the insurance provider can usually give you proof of insurance that day and mail you an insurance card within approximately 7 to 14 business days. Some companies may also provide a digital copy of your insurance card right after purchase.