How to compare car insurance quotes apples to apples

To compare car insurance quotes fairly, make every quote match on four things before you look at price: the same drivers and vehicles, the same coverages, limits and deductibles, the same policy length, and the same assumptions about discounts and payment. Then convert each price to an annual total. Two quotes that differ on any of those points are not comparable, and the lower number may simply be less insurance.

Why quotes are hard to compare

A car insurance quote is an estimate built from what you told the insurer and the coverage it filled in by default. Online quote forms often start at the state minimum or at a "recommended" package that differs from company to company. One insurer may show a six-month price and another a 12-month price. One may assume you will enroll in a telematics program, sign up for paperless billing and pay in full; another may not.

The quote can also change at purchase, because the insurer verifies your driving record, claims history and, in most states, a credit-based insurance score after you apply. A quote that leaves out a ticket or an accident will be repriced.

Start from your declarations page

Your current declarations page lists every coverage, limit and deductible on your policy. Use it as the template for every quote, even if you plan to change something — change it the same way in every quote. If you are not sure your current coverage is right, settle that first with the coverage calculator and how much liability coverage do you need?.

The line items that must match

A worked example

The figures here are hypothetical.

Say you receive two quotes:

• Company A: $812 for six months, $1,000 collision and comprehensive deductibles, no rental coverage, assumes you enroll in its telematics app.
• Company B: $1,540 for 12 months, $500 deductibles, rental reimbursement included, no telematics.

At first glance, Company A looks like $812 against $1,540. Converted to a year, Company A is $1,624 — more than Company B — and it has higher deductibles, no rental coverage, and a price that depends on a driving score you have not earned yet.

To compare fairly, ask Company A to requote at $500 deductibles with rental coverage and without the telematics assumption, or ask Company B to requote at $1,000 deductibles without rental. Only then does the difference in price mean something.

Step-by-step method

1. Gather your documents: declarations page, driver's license numbers and VINs (see what you need to get a car insurance quote).
2. Write down your target coverage for every line in the table above.
3. Get at least three quotes from different kinds of sellers — for example a direct insurer, a captive agent and an independent agent (see captive agents vs independent agents vs buying direct).
4. Disclose accidents and tickets accurately. An honest quote is a firm quote; an incomplete one will change.
5. Normalize the term. Double six-month prices to get an annual figure.
6. Separate the discounts. Note which discounts each quote assumes and remove any you will not qualify for or keep.
7. Include payment costs. Add installment fees, or compare paid-in-full prices across the board (see paying in full vs monthly: installment fees and discounts).
8. Enter everything in the car insurance quote comparison worksheet so the annual totals sit side by side.
9. Compare the companies, not just the prices. For the two or three cheapest, check financial strength and complaint records (see The NAIC complaint index: how to look up an insurer). A small saving rarely justifies a company with a poor claims reputation.
10. Ask about price changes. Ask whether the quoted rate is guaranteed for the full term and what happens at renewal.

Quotes from comparison sites and agents

Comparison websites, independent agents and captive agents can all produce quotes, but they do not always show the same thing. A comparison site may display an estimated range before an insurer has checked your records, and an agent may quote only the companies it represents. Treat any figure as provisional until you see a formal quote with the coverage spelled out line by line, then run it through the same checks as the rest.

Things a price comparison will not show

• Claims service. How the company handles a total loss or a disputed injury claim matters more than a few dollars a month.
• Repair rules. Whether the policy pays for original-manufacturer parts or allows aftermarket parts, and how it handles shop choice.
• Tenure benefits. Accident forgiveness or diminishing deductibles you have already earned with your current insurer.
• Rate stability. A company that is cheapest today may raise rates faster at renewal. You will only know by checking each renewal against the market.

Key takeaways

• Match drivers, vehicles, limits, deductibles, endorsements, term, discounts and payment plan before comparing prices.
• Convert every quote to an annual total; six-month and 12-month prices are easy to confuse.
• Quotes that assume telematics or other conditional discounts can rise once the insurer has your real data.
• Disclose your driving record accurately so the quote does not change at purchase.
• After price, compare the insurers themselves: financial strength, complaints and claims service.