Auto Insurance Comparison Spreadsheet: Compare Quotes Side by Side

Your auto insurance just went up again. If it did not, you are in the minority — between 2022 and 2024, auto insurance premiums increased 46% nationally. The average American now pays roughly $2,496 per year for full coverage, and in states like Nevada, Louisiana, and Florida, that figure exceeds $3,600.

There is some good news for 2026: rates are finally stabilising. National premiums are expected to increase by less than 1% this year — the smallest rise since before the inflation-driven surge began. More than half of states are projected to see rate decreases. Major insurers like State Farm and Liberty Mutual have already reduced rates, and five of the ten largest carriers are expected to lower premiums this year.

But here is the catch: stabilisation does not mean your individual rate will drop automatically. Insurers that raised rates aggressively in 2023–2024 are not rolling those increases back. The only way to find out whether you are overpaying is to compare quotes from multiple carriers using identical coverage parameters. That is exactly what this spreadsheet does.

Disclaimer: This comparison tool is provided for informational and educational purposes only. It does not constitute insurance advice. Consult a qualified insurance agent before making any insurance decisions. SpreadsheetTemplates.info is not responsible for decisions made based on the information provided.

Why Comparing Auto Insurance Requires More Than Price#

Most people compare auto insurance by looking at the monthly premium and picking the cheapest option. That approach leaves money — and protection — on the table.

The Coverage Mismatch Problem#

A $120/month quote is not cheaper than a $150/month quote if the first one has state-minimum liability ($15,000/$30,000/$10,000 in many states) while the second includes $100,000/$300,000/$100,000. The cheaper premium exposes you to potentially hundreds of thousands in out-of-pocket liability in a serious accident. Comparing premiums without standardising coverage is comparing apples to furniture.

The Deductible Trap#

Insurers commonly quote with different default deductibles. Insurer A quotes you with a $500 comprehensive deductible; Insurer B uses $1,000. That $500 difference suppresses Insurer B’s premium, making it look cheaper. But when you file a comprehensive claim — say, hail damage or a windshield replacement — you are paying $500 more out of pocket. The spreadsheet forces you to enter deductibles explicitly so the comparison reflects reality.

The Discount Illusion#

A 20% multi-policy discount from an expensive insurer may still produce a higher premium than no discount at all from a competitively priced carrier. Discounts are applied to each insurer’s proprietary base rate, which varies enormously. The only number that matters is the final quoted premium after all discounts are applied.

What the Spreadsheet Compares#

The auto insurance comparison spreadsheet evaluates up to four quotes side by side across every variable that affects your total cost of ownership. You enter the data from each quote; the spreadsheet calculates the rest.

Coverage Fields#

For each quote, you enter the liability limits (bodily injury per person, bodily injury per accident, and property damage), uninsured/underinsured motorist coverage, comprehensive deductible and premium, collision deductible and premium, medical payments or personal injury protection, and any additional endorsements such as roadside assistance, rental car reimbursement, or gap coverage.

Cost Analysis#

The spreadsheet calculates the total annual premium, total annual premium per vehicle, and — critically — the total cost under three scenarios: no claims filed, one comprehensive claim filed, and one collision claim filed. This total-cost view reveals which policy is genuinely cheapest once you factor in deductible differences.

Discount Tracking#

A dedicated section tracks which discounts each insurer is applying: multi-vehicle, multi-policy (bundling with home insurance), safe driver, good student, telematics/usage-based, military/veteran, and professional organisation. This helps you identify discounts you may be eligible for but that were not applied to your initial quote.

How to Use the Spreadsheet#

Step 1: Standardise your coverage request. Before requesting any quotes, decide on the coverage levels you want. A good starting point for most drivers is $100,000/$300,000/$100,000 liability, $500 comprehensive deductible, $500 collision deductible, and uninsured motorist coverage matching your liability limits. Use these same parameters for every quote.

Step 2: Request at least four quotes. Include at least one large national carrier, one regional insurer, one direct-to-consumer provider, and — if you qualify — one membership-based insurer like USAA or a professional association partner. If you have an independent agent, they can pull multiple quotes at once.

Step 3: Enter the data. Input each quote’s coverage details, premiums, deductibles, and applied discounts into the spreadsheet. The tool handles all calculations.

Step 4: Review the total-cost scenarios. The no-claim scenario shows ongoing costs. The claim scenarios show how deductible differences affect your real-world expenses. A policy with a lower premium but higher deductible may cost you more overall if you file even one claim.

Step 5: Check insurer strength. The spreadsheet includes a field for each insurer’s AM Best financial rating and J.D. Power claims satisfaction score. A low premium from a financially weak insurer is not a bargain — it is a risk. Aim for AM Best A (Excellent) or higher.

Download: Auto Insurance Comparison Spreadsheet — Excel (.xlsx)

The 2026 Auto Insurance Market: What You Need to Know#

The auto insurance market in 2026 is in a transitional phase, and understanding the dynamics helps you shop smarter.

Rate Stabilisation Is Real, But Uneven#

After years of double-digit premium hikes driven by rising repair costs, supply chain disruptions, and post-pandemic accident frequency, the national picture has calmed considerably. Insurify reports that the average annual full-coverage premium fell 6% in 2025 to $2,144, and projects only a 1% increase in 2026 to approximately $2,158. ValuePenguin’s analysis puts the average at $208/month ($2,496/year) with less than 1% growth expected nationally.

But national averages conceal enormous state-level variation. More than half of states are projected to see rate decreases in 2026, with Iowa expecting the largest drop at around 6%. On the other end, New Jersey faces an estimated 10.5% increase, and Oregon, Maryland, and Utah are all projected to see hikes of 9% or more. Your state’s trajectory matters more than the national trend.

Clean Records Are Being Rewarded#

The gap between standard and high-risk pricing widened significantly in 2025 and that trend continues. Drivers with clean records and good credit are seeing stable or declining rates from major national carriers. State Farm, Liberty Mutual, and several other large insurers have reduced rates for preferred-risk customers. Meanwhile, drivers with DUI convictions saw rate increases of 35%, and teen driver surcharges rose 17% in the second half of 2025.

If you have maintained a clean driving record through the high-rate period of 2023–2024 and have not shopped since, you are likely in the strongest position to find savings by switching.

Vehicle Choice Is Increasingly Important#

What you drive is a growing factor in premium pricing. The Tesla Model Y is the most expensive new vehicle to insure in 2026, averaging $354/month for full coverage. Compact crossover SUVs like the Toyota RAV4 and Honda CR-V are the most affordable at approximately $214/month — about 14% below the national average. Electric vehicle insurance is getting cheaper relative to gas-powered vehicles, but remains above average due to higher repair costs and specialised parts.

Tariffs Are a Wildcard#

The 25% tariff on imported automobiles and auto parts has not yet fully flowed through to insurance premiums, but it will. Repair costs are likely to rise through 2026 as the tariff impact reaches body shops and parts suppliers. Insurers have not yet passed these costs to consumers in most markets, but expect mid-year rate adjustments in states with high import-vehicle concentrations.

What to Compare: The Key Coverage Categories#

Coverage Type	What It Protects	Minimum Recommended	Why It Matters
Bodily Injury Liability	Others you injure in an at-fault accident	$100,000 per person / $300,000 per accident	State minimums (often $15K/$30K) leave you personally liable for major injuries
Property Damage Liability	Others’ property you damage	$100,000	A single modern vehicle can cost $50K+; state minimums of $10K–$25K are dangerously low
Uninsured/Underinsured Motorist	You, if hit by an un/underinsured driver	Match your liability limits	Roughly 14% of US drivers are uninsured; this is your backstop
Comprehensive	Non-collision damage (theft, hail, animal strikes, vandalism)	$500 deductible	Essential if your vehicle is worth more than about $5,000
Collision	Damage from collisions	$500 deductible	Essential if you are financing or leasing; optional on older paid-off vehicles
Medical Payments / PIP	Your medical expenses regardless of fault	State-dependent	Required in no-fault states; valuable anywhere as a gap-filler

How to Get the Best Auto Insurance Rate in 2026#

Beyond shopping for quotes, several strategies can meaningfully reduce your premiums in the current market.

Consider telematics if you are a safe, low-mileage driver. Usage-based insurance programs — where your driving habits are monitored via an app or device — typically offer 10–40% discounts for safe drivers. With the post-pandemic shift to hybrid and remote work, many drivers are logging fewer miles than their policies assume. If you drive under 10,000 miles per year and avoid hard braking, telematics can unlock significant savings. For a deeper analysis, see our telematics insurance savings calculator.

Bundle strategically, but verify the maths. Bundling auto and home insurance is the most common discount, typically 5–25%. But run the numbers both ways: sometimes the cheapest standalone auto policy plus the cheapest standalone home policy beats the bundled price from a single carrier. The spreadsheet’s discount tracking section helps you evaluate this.

Raise your deductible — but only if the maths works. Moving from a $500 to a $1,000 deductible saves most drivers $200–$400 per year. That is a strong return if you go claim-free for two years. But it requires having the higher deductible amount available in liquid savings. Our insurance deductible comparison calculator models the break-even point precisely.

Review your vehicle’s impact on premiums. Vehicle choice is a significant premium factor. Teslas and luxury SUVs are consistently among the most expensive vehicles to insure — the Tesla Model Y costs an average of $354/month to insure in 2026, 70% more than the cheapest-to-insure models. If you are in the market for a new car, check insurance costs before you commit.

Watch for tariff-driven cost increases. A less obvious factor in 2026: tariffs on imported auto parts are increasing repair costs, which in turn increase claim severity and premiums. If you are seeing rate increases despite a clean driving record, this is likely a contributing factor. For more on how this works, see how tariffs affect your insurance premiums in 2026.

State-Level Shopping Strategy#

Because auto insurance is regulated at the state level, your comparison strategy should account for your state’s specific dynamics.

If your state is projected for rate decreases in 2026 — Iowa, Wyoming, Arkansas, Minnesota, Mississippi, and several others — this is an excellent time to shop. Insurers competing for market share in declining-rate environments often offer aggressive pricing to attract new customers. Your current insurer may not reduce your rate proactively. You typically need to either call and ask or get a competing quote and use it as leverage.

If your state is projected for increases — New Jersey, Oregon, Maryland, Utah, Nevada, California — shopping is even more important. Increases are not uniform across all carriers. Some insurers absorb losses better than others, and their rate adjustments vary. The insurer raising rates most aggressively in your state may be one you should leave; the insurer with the most competitive new-customer pricing may be one you should join.

If you are in a state with significant regulatory changes in 2026, factor those into your timeline. Louisiana has new laws effective January 2026 requiring insurers to prominently display prior premiums at renewal and preventing first-time coverage lapses from triggering rate increases. These changes can create both new protections and new comparison opportunities.

Special Situations#

Some drivers face comparison challenges beyond the standard process.

Multi-car households should compare both per-vehicle costs and total household costs. Some insurers are dramatically cheaper per vehicle when you insure multiple cars; others offer minimal multi-vehicle discounts. The spreadsheet tracks per-vehicle and total-household costs separately.

Households with teen drivers face premiums that can double or more. The key variable is which insurer penalises teen drivers least. Good student discounts (typically 5–15%), driver’s education completion discounts, and telematics programmes where the teen’s driving data is monitored can all reduce the surcharge. Compare the teen driver add-on cost across all four quotes, not just the household total.

Rideshare and delivery drivers need to verify that their personal auto policy covers commercial use, or purchase a rideshare endorsement. Standard personal auto policies exclude accidents that occur during commercial driving. Gaps in coverage here can result in denied claims. Not all insurers offer rideshare endorsements, so this filters your comparison set.

For the broader framework on comparing any insurance type, see our complete guide to comparing insurance policies in 2026.

Frequently Asked Questions#

How often should I compare auto insurance quotes?

Compare at least once per year, ideally 30–45 days before your renewal date. Also compare whenever you have a major life event — moving, marriage, adding a teen driver, buying a new vehicle, or after a claim.

Will I lose my safe driver discount if I switch insurers?

No. Most insurers apply their own safe driver discounts based on your driving record, which follows you regardless of your carrier. However, some loyalty discounts are carrier-specific and will reset when you switch. The net effect is almost always positive if the new premium is meaningfully lower.

Should I drop collision coverage on my older car?

A common rule of thumb: if your vehicle’s market value is less than ten times the annual collision premium, collision coverage may not be cost-effective. A car worth $5,000 with collision costing $600/year means the maximum payout (market value minus deductible) is not worth the ongoing premium. Use your vehicle’s Kelley Blue Book value to decide.

Does my credit score affect my auto insurance rate?

In most states, yes. Insurers use credit-based insurance scores as a rating factor, and studies show a correlation between credit history and claims frequency. California, Hawaii, Massachusetts, and Michigan prohibit this practice. If your credit has improved since your last renewal, shopping around may yield a better rate that reflects your current score.

Is it better to pay auto insurance monthly or annually?

Pay annually or semi-annually if you can. Monthly payment plans typically include a billing fee of $3–$10 per month ($36–$120/year), and some insurers charge a higher effective rate for monthly payments. The annual payment option is almost always cheaper.

How do I compare auto insurance if I have a teen driver?

Teen drivers dramatically increase premiums — by 50–100% or more on average. The key comparison variable for families with teens is the per-driver cost and which discounts apply (good student, driver’s education completion, telematics). Some insurers are more competitive than others for teen-driver households, which is why comparing at least four quotes is especially important in this situation.

What is the minimum auto insurance I am legally required to carry?

Requirements vary by state. Most states require liability insurance, with minimums ranging from $15,000/$30,000 in states like California to $50,000/$100,000 in Maine. However, state minimums are rarely adequate. A single serious accident can easily exceed minimum limits, leaving you personally liable for the difference. We recommend at minimum $100,000/$300,000 liability coverage regardless of your state’s requirements.

My renewal went up but I have not filed any claims. Why?

Rate increases with no claims history are usually driven by market-wide factors: rising repair costs (up 36% since 2021), increased claim severity across the insurer’s book, tariff impacts on parts, and higher vehicle replacement values. This is exactly the scenario where comparison shopping delivers the most value — your risk profile has not changed, but your insurer’s pricing has. Someone else’s pricing model may rate your profile more favourably.