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Insurance shifts some financial risk to an insurer under a written contract. You pay a premium to keep the policy active; if a covered loss or service occurs, the insurer pays its share according to the policy. You may still owe a deductible or other costs, and the policy does not cover every mishap or expense.
How does insurance work?
The National Association of Insurance Commissioners (NAIC) describes insurance as “a way to manage your financial risks” in its consumer explainer. In practice, an insurer evaluates risk and offers a contract; the policyholder pays the premium; and, if an event covered by that contract occurs, the insurer assesses a claim and pays what the policy requires.
The policy is the contract between the policyholder and insurer. It specifies who or what is insured, which events or services are covered, what is excluded, and the limits and conditions that apply. The insured is the person protected by the policy; the insurer is the company providing coverage. Coverage means the protection and benefits in the contract—not a promise to pay for every loss.
Insurance includes many distinct products, such as auto, homeowners, renters, health, life, disability, dental, pet, travel, flood, and liability coverage. Their rules differ. An auto policy may address damage or liability after a crash; renters coverage may insure belongings against specified losses; and a health plan sets terms for covered care, providers, and member costs. Life insurance pays a benefit under the policy’s terms when the insured person dies. The label alone does not tell you whether a particular event, service, or person is covered.
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What do the main insurance terms mean?
- Premium: The payment for maintaining coverage. It may be billed on different schedules, and it is due whether or not you make a claim.
- Claim: A request for the insurer to pay its share for a covered event or service.
- Deductible: A dollar amount—or, in some policies, a percentage—that you pay toward a claim before the insurer pays its share, subject to the policy’s rules.
- Copayment (copay): A fixed amount you pay for certain health services, as specified by your plan.
- Coinsurance: A percentage of the allowed cost of a covered health service that you pay, often after meeting the deductible. The plan sets the applicable rules.
- Underwriting: The insurer’s assessment of risk to decide whether to offer coverage and on what terms or price.
- Prior authorization: A health insurer’s review of whether a service or drug meets the plan’s coverage rules. A review is not itself a guarantee that every related cost will be covered.
Health plans can combine premiums, deductibles, copayments, and coinsurance in different ways. Do not assume one plan’s order or cost-sharing rules apply to another. Check the plan documents for its rules, including any out-of-pocket maximum.
What does insurance cover?
The policy’s covered events and services, exclusions, limits, and conditions determine what the insurer may pay. A premium alone does not establish that a particular loss is covered. For a home or renters policy, the declarations page—the summary of key policy details—can help you locate coverage amounts and deductibles, but the complete policy contains the governing terms. Endorsements or riders may add, change, or clarify coverage.
For a health plan, review the plan documents for covered services, network or provider restrictions, cost-sharing, and any prior-authorization requirements. The NAIC explains that a Summary of Benefits and Coverage (SBC) presents benefits and cost-sharing in a standardized format that can help consumers compare plans: NAIC consumer health insurance guide.
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When comparing policies, look beyond the premium. Check the following items for each option:
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- Covered events or services, exclusions, and restrictions.
- Coverage limits and whether they fit the potential loss.
- Premium for the same coverage period.
- Deductible amount or percentage, including any separate deductibles.
- For health plans, copayments, coinsurance, out-of-pocket maximums, and provider or network rules.
- Where relevant, replacement cost versus actual cash value, plus endorsements or riders.
- Available help from the insurer, agent, or broker, and the route for consumer assistance in your jurisdiction.
How do premiums, deductibles, and other costs fit together?
Your premium is the cost of keeping a policy in force; it is not necessarily the full cost of using the coverage. A deductible can leave you responsible for part of a covered loss before the insurer’s share begins. Health coverage may also require copayments or coinsurance, according to plan rules.
The NAIC’s 2022 consumer health insurance guide gives an illustration using a $100 allowed amount and 20% coinsurance. If the deductible has already been met, the member pays $20 and the insurer pays the remainder in that example. If it has not been met, the member pays the full $100 allowed amount in the example. This is an illustration of one calculation, not a description of every health plan.
For home and auto policies, choosing a higher deductible generally lowers the premium, but it means you need to be able to pay more after a loss. Some homeowners policies use separate deductibles for certain perils, such as named storms, wind, hail, or earthquakes. Ask how each deductible applies to the losses covered by the policy.
How do insurers set the price of insurance?
Insurers set premiums based on expected future claim costs and factors used to assess risk. Those factors vary by insurance type and may be limited by state law. Examples can include location, claims history, selected limits and deductibles, driving record, vehicle repair or replacement cost, home replacement cost, and mileage. The NAIC outlines pricing factors and consumer shopping considerations in its insurance basics explainer.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteTo shop, request quotes from more than one insurer and compare equivalent coverage—not just the bottom-line price. Ask whether discounts are available and what changes, if any, would affect the quote. Examples may include bundling, defensive-driving courses, vehicle safety features, smoke detectors, or security equipment; availability depends on the insurer and jurisdiction. A lower premium or discount is not guaranteed, and a higher deductible is a trade-off rather than a universal recommendation.
How can you use insurance when something goes wrong?
Claim procedures vary by policy and insurer. For auto, homeowners, and renters losses, the NAIC recommends documenting what happened, reporting it to the insurer, completing the claim form, and supplying supporting evidence. The insurer then reviews whether the event is covered and what it owes under the contract. In health coverage, providers commonly submit claims; in some cases, a member may pay first and seek reimbursement.
- Document the event or expense. Keep relevant photos or videos, reports, receipts, and other records.
- Contact the insurer and follow its instructions. Ask how to report the claim, what forms or evidence are needed, and how to submit them.
- Keep a record of the claim. Store the declarations page, policy, receipts, photos, claim number, and communications together.
- Review the policy terms that affect payment. Check whether the event is covered and how the deductible, limits, exclusions, and other conditions apply.
Submitting a claim does not guarantee approval or payment. The insurer determines its obligation from the contract and applicable rules.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How do you get help with insurance questions?
Start with the policy and plan documents for the coverage in question. For an unclear term or claim procedure, contact your insurer, agent, or broker. If you get coverage through an employer, its benefits contact may help explain where to find plan materials or whom to ask.
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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Every U.S. state, the District of Columbia, and the five U.S. territories has a Department of Insurance dedicated to helping consumers, according to the NAIC. Use the NAIC consumer portal to find the relevant department and its local contact, complaint information, company search, and other consumer tools. Health plan oversight depends on plan type, so the appropriate help or regulator can differ.
Insurance rules and complaint routes vary by jurisdiction, and a general explanation cannot determine what a specific policy owes. The written policy or plan and applicable law control. This overview is U.S. consumer education, not legal, financial, or policy-specific advice.
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