Learn

Insurance, explained

The words on a policy decide what you actually pay, and most of them are easy to mix up. Below are plain-English definitions of the 63 terms that matter most (across health, car, renters, home, and life), plus 22 side-by-side comparisons for the choices people get stuck on. Each one is short, honest, and links to a calculator or guide when a number would help more than a paragraph.

Health insurance

Actuarial value
The average share of covered costs a plan pays: roughly 60 percent bronze to 90 percent platinum.
Benchmark plan
The plan your subsidy is measured against: on the marketplace, the second-lowest-cost silver plan.
COBRA
A federal law letting you keep your job-based plan for a time after leaving, at the full cost.
Coinsurance
Your percentage share of a covered service's cost after you've met your deductible.
Copay
A fixed dollar amount you pay for a specific covered service, like $30 for a doctor visit.
Cost-sharing reduction
Extra savings that lower your deductible, copays, and coinsurance, available only on silver plans.
Deductible
The amount you pay for covered care each year before your plan starts paying its share.
Essential health benefits
Ten categories of care every marketplace plan must cover, from hospital stays to prescriptions.
Exclusive Provider Organization (EPO)
A plan that covers only in-network providers but usually skips referrals for specialists.
Federal poverty level
An income benchmark, set yearly by HHS, used to decide marketplace and Medicaid eligibility.
Flexible Spending Arrangement (FSA)
An employer-owned account for pre-tax health spending, usually subject to use-it-or-lose-it rules.
Formulary
The list of prescription drugs a plan covers, usually sorted into cost tiers.
Health Insurance Marketplace
The government-run exchange where you compare plans and the only place to get a premium tax credit.
Health Maintenance Organization (HMO)
A lower-cost plan that uses one network, a primary care doctor, and referrals for specialists.
Health Savings Account (HSA)
A tax-advantaged savings account for medical costs, available only if you have an HSA-qualified HDHP.
High-Deductible Health Plan (HDHP)
A plan with a higher deductible and IRS-set limits that can be paired with a Health Savings Account.
Metal tiers
Bronze, silver, gold, and platinum categories that set how you and the plan split costs.
Modified Adjusted Gross Income (MAGI)
The income figure the marketplace uses for subsidies: adjusted gross income plus a few add-backs.
Open enrollment
The yearly window when anyone can enroll in or change a marketplace plan without a qualifying event.
Out-of-pocket maximum
The most you'll pay for covered, in-network care in a plan year before the plan covers 100 percent.
Point of Service (POS) plan
A hybrid plan that uses a primary care doctor and referrals but covers some out-of-network care.
Preferred Provider Organization (PPO)
A flexible plan that covers out-of-network care at a higher cost and skips specialist referrals.
Premium
The fixed amount you pay every month to keep your health plan active, whether you use care or not.
Premium tax credit
A subsidy that lowers your monthly marketplace premium, based on your household income.
Preventive care
Recommended screenings, vaccines, and checkups that in-network marketplace plans cover at no cost.
Provider network
The doctors, hospitals, and pharmacies a plan contracts with to provide care at in-network rates.
Qualifying life event
A life change, like a job loss, move, marriage, or birth, that opens a special enrollment period.
Second-Lowest-Cost Silver Plan (SLCSP)
The second-lowest-cost silver plan in your area, the benchmark your subsidy is calculated against.
Special enrollment period
A window to enroll outside open enrollment after a qualifying life event like a job loss or move.
Subsidy cliff
The income line above which marketplace premium tax credits end: 400 percent of poverty in 2026.

Car insurance

Bodily injury liability
The car-insurance coverage that pays for other people's injuries when you cause a crash.
Car insurance deductible
The amount you pay out of pocket on a collision or comprehensive claim before coverage kicks in.
Collision coverage
Pays to repair or replace your own car after a crash, minus your deductible.
Comprehensive coverage
Covers your car for non-crash losses: theft, fire, hail, flood, animals, glass.
Gap insurance
Coverage that pays the difference between what you owe on a car loan or lease and the car's value if it's totaled.
Personal injury protection (PIP)
No-fault coverage for your and your passengers' medical bills after a crash.
Property damage liability
The car-insurance coverage that pays for other people's property when you are at fault.
Rental reimbursement coverage
An optional add-on that pays for a rental car while your car is being repaired after a covered claim.
Uninsured/underinsured motorist
Pays your costs when the at-fault driver has no insurance, or not enough.

Renters insurance

Actual cash value
A claims setting that pays an item's depreciated value: its cost minus years of wear.
Loss of use coverage
Pays for a hotel and extra living costs if a covered event makes your home unlivable.
Medical payments (MedPay)
A small no-fault amount that pays a guest's minor medical bills, separate from liability.
Named insured
The person (or people) actually listed on a renters policy, the only ones whose belongings and liability are covered.
Off-premises coverage
The part of renters insurance that protects your belongings almost anywhere, not just inside your home.
Personal property coverage
The part of a renters policy that replaces your belongings after theft or a covered loss.
Renters liability coverage
Pays if you injure someone or damage property, including the building itself.
Replacement cost value
A claims setting that pays what a new equivalent item costs today, with no deduction for age.
Scheduled personal property
An add-on that insures high-value items like jewelry or cameras for their full appraised value.

Homeowners insurance

Coinsurance clause
A rule that can cut even a small claim if you insure your home below ~80% of rebuild cost.
Dwelling coverage
The cost to rebuild your home's structure: the number every other home limit is priced from.
Other structures coverage
Covers detached structures (garage, fence, shed, deck), usually ~10% of the dwelling limit.
Personal liability coverage (home)
The part of a homeowners policy that pays if you're legally responsible for injuring someone or damaging their property.
Replacement cost (dwelling)
The cost to rebuild your home with like materials at today's prices, not its market value.
Umbrella policy
Extra liability coverage that stacks on top of your home and auto limits, usually $1M+.
Water backup coverage
An add-on that covers damage when water backs up through sewers or drains, something a standard home policy excludes.

Life insurance

Accelerated death benefit
A rider that lets you access part of your life insurance payout early if you're diagnosed with a qualifying terminal illness.
Beneficiary
The person or entity you name to receive your life insurance death benefit.
Contingent beneficiary
The backup who receives a life insurance payout if the primary beneficiary has died or can't be found.
Death benefit
The amount a life insurance policy pays to your beneficiaries when you die.
Life insurance rate class
The health tier underwriting assigns you: it decides your price for the same coverage.
Life insurance rider
An optional add-on that customizes a policy: some are free and valuable, others overpriced.
Term life insurance
Pure, low-cost coverage for a set number of years: what most families should buy.
Whole life insurance
Permanent coverage that never expires and builds cash value, at ~10x the cost of term.

Ready to put real numbers on it?

The definitions tell you what a term means; the calculators tell you what it costs for your household: estimated subsidies, plan comparisons, coverage sizing, and the true annual cost of care, all free and with no email required.

See all the calculators