How to Read Car Bills: Your Loan, Insurance and Warranty Paperwork

Buying a car often ends with a stack of documents and a pen. This guide is the map for the rest of our site: it explains what each stack is for, the few numbers worth finding first, and which items are usually optional. It is education only. Car Bills Explained is not an insurer, lender, broker, agent or dealer, and we don’t tell you what to buy.

What are the three stacks of car paperwork?

• The loan (or lease) paperwork. If you finance, you sign a credit contract with the dealer or a bank or credit union. It includes the federal Truth in Lending disclosures: the APR, the finance charge, the amount financed and the total of payments.
• The insurance paperwork. Your auto policy lists the coverages you bought, the limits (the most the policy pays) and the deductibles (the part of a claim you pay). Your state sets a minimum, and a lender usually requires more if you still owe money on the car.
• The add-on paperwork. Service contracts (often sold as “extended warranties”), GAP coverage, credit insurance and physical add-ons such as tire and wheel protection each come with their own contract, price and cancellation terms.

The Consumer Financial Protection Bureau (CFPB) puts it simply: before you drive away, make sure the paperwork matches the deal you think you are getting and that everyone has signed all the documents.

What should you find first on the loan papers?

The CFPB explains that the APR is the cost you pay each year to borrow money, including fees, expressed as a percentage. Because the federal Truth in Lending Act (TILA) requires lenders to give you the APR and other key terms before you are legally obligated on the loan, the APR is the number to use when you compare offers, as long as you compare loans with the same term.

Four numbers tell most of the story:

• APR: the yearly cost of borrowing, interest plus certain fees.
• Amount financed: what you are borrowing. Add-ons rolled into the loan raise it.
• Finance charge: the dollar cost of the credit over the life of the loan.
• Total of payments: everything you will have paid when the loan ends.

Also look at the term (number of months). The CFPB notes that a longer loan can lower the monthly payment but means you pay more interest, and it keeps you owing more than the car is worth for longer. Our guide to reading an auto loan offer walks through each line.

What does the insurance paperwork tell you?

Liability limits are usually written as three numbers, such as 30/60/15. The National Association of Insurance Commissioners (NAIC), the group of state insurance regulators, explains that these are the most your policy will pay for injuries to one person, for all injuries in one accident, and for property damage. California: 30/60/15 has been the state minimum since January 1, 2025, according to the California Department of Insurance.

Below the liability section you may see collision, comprehensive, uninsured and underinsured motorist, medical payments or personal injury protection (PIP), rental and towing. The NAIC also points out that there is no single policy called “full coverage”; a policy is a set of separate coverages. See car insurance coverage types explained and how to check your state’s minimum.

What is a service contract, and is it a warranty?

The Federal Trade Commission (FTC) says an auto service contract, sometimes called an extended warranty, is an optional contract to perform or pay for certain repairs, and that it is not a warranty as federal law defines it because you buy it separately. The value depends on the company responsible for paying claims, the price, the deductible and what is excluded. Our guide on extended warranties versus service contracts lists the questions to ask.

Which items are usually optional?

The CFPB says that, generally, you cannot be required to buy an extended warranty, GAP insurance or credit insurance to get an auto loan, and that these products are optional in most situations. If a dealer or lender says one is required, the CFPB suggests asking them to show you where the sales contract says so. If a product truly is required for the credit, its cost must be included in the finance charge and the APR. Add-ons are also negotiable. See dealer add-ons and GAP.

What can you do before you sign?

• Check your credit reports. You can get free reports from each of the three nationwide credit bureaus every week at AnnualCreditReport.com. See free credit reports before a car loan.
• Get a loan quote first. The CFPB suggests getting preapproved by a bank or credit union so you can compare it with dealer financing.
• Ask for the numbers in writing. APR, term, amount financed and the price of each add-on, before the final contract is printed.
• Read every page. Ask what each charge is. If you don’t understand a line, ask before you sign, not after.

What should you keep after you sign?

Keep a full signed copy of the loan contract, the buyer’s order, every add-on contract, your insurance policy and its renewal notices, and any letters from the lender or insurer. The FTC suggests getting written confirmation that a service contract is in effect. If you later cancel an add-on, sell the car or pay off the loan early, those documents show what refund may be due; the CFPB notes you may be entitled to a refund on optional products if you sell, refinance or prepay.

What if something doesn’t match?

Start with the company, in writing. If that doesn’t fix it, your state insurance department handles complaints about insurers and agents, and the CFPB takes complaints about auto loans. See where to get help with a complaint. And if someone calls about your car’s warranty “expiring,” read how to spot warranty scam calls before you press any button.

Does any of this change by state?

Yes. Insurance is regulated by each state, so minimum limits, required coverages such as PIP, and the complaint process differ. States also license lenders and some regulate service contract sellers. For example, California runs a Low Cost Auto Insurance Program for income-eligible drivers, and Texas regulates service contract providers through its Department of Licensing and Regulation. We label every state rule with the state’s name.