Insurance is one of the few financial products designed to be bought and never used.
That makes it uniquely easy to get wrong in both directions. Buy too little of the right kind, and one bad event undoes years of progress. Buy too much of the wrong kind, and you bleed money every month protecting against things that would barely register.
There is a single principle that sorts most of it out.
The Rule That Decides Everything
Insure against what would ruin you. Pay for everything else yourself.
Insurance exists to transfer catastrophic risk. You pay a manageable amount regularly so that a financially devastating event does not fall entirely on you.
That logic only works when the potential loss is genuinely large relative to your finances. A $600 laptop repair is unpleasant. A $200,000 hospital bill is a different category of problem.
Apply the test to any policy you are offered: if this event happened and I had no coverage, would it change my financial life, or would it just be an annoying month?
Most add-on policies fail that test immediately.
The Four That Matter
Health insurance
Not optional. Medical costs in the United States are the single most common source of financially catastrophic events, and they arrive without warning.
If you have employer coverage, review the plan yearly rather than rolling over the choice you made when you joined. Circumstances change and plan terms change with them.
If you do not have employer coverage, Healthcare.gov is the marketplace, and subsidies are available based on income. Under current federal rules, adult children can remain on a parent’s plan until they turn 26, and some states extend that further.
Disability insurance
The most underappreciated policy on this list.
During your working years, you are considerably more likely to become unable to work for a period than you are to die. Yet most people carry life insurance and have never considered disability coverage.
It replaces a portion of your income if illness or injury stops you working, regardless of whether the cause was work-related. That last point distinguishes it from workers’ compensation, which only covers on-the-job injury.
Look for a policy replacing roughly 60 to 70 percent of income. Check whether your employer offers it, or allows you to buy coverage through the company — group rates are usually cheaper than buying individually.
This matters most if you are self-employed or the sole earner in your household, since there is no fallback income at all.
Term life insurance — if someone depends on your income
The qualifier is the important part.
Life insurance pays people who depend on you financially. If nobody does — no children, no financially dependent partner — you do not need it. An agent may tell you otherwise. Consider who benefits from that advice.
If people do depend on your income, buy term life. It covers a fixed period, typically 10 to 30 years, chosen to cover the years your dependents actually need protecting. It is straightforward and inexpensive.
You will encounter enthusiastic pitches for whole life, universal life, and variable life. These bundle insurance with an investment component, are far more profitable for the seller, and cost multiples of term coverage for the same protection.
The cleaner approach for most people is to buy term and invest the difference separately, where you can see the fees and control the choices. Our piece on investing versus speculating covers why understanding what you own matters — a principle that applies just as much to a bundled insurance product.
On how much: there is no clean formula. Work out what your dependents would need to live on, and for how long. If one partner stays home, factor in what it would cost to pay for the work they currently do.
Liability coverage
This is the part of auto, homeowners, and renters insurance that protects you when you cause harm to someone else — their car, their property, their medical bills.
It is worth attention because the potential loss has no natural ceiling. Damage to your own car is capped at the value of the car. A serious injury claim is not capped by anything.
If you rent, renters insurance is genuinely cheap for what it does — commonly $15 to $30 a month. Landlords are generally not responsible for your possessions or for theft, and replacing everything you own costs far more than people estimate.
What You Almost Certainly Do Not Need
Each of these fails the ruin test. The loss they cover is one you could absorb.
Extended warranties and service contracts. Highly profitable for the seller, rarely worthwhile for you. Most electronics and appliances already carry a manufacturer’s warranty.
Credit insurance. Pays your loan or card balance if you die or become disabled. Expensive, usually capped at a limited number of months, and the money is better spent paying the debt down directly.
Identity theft insurance. Sold on fear. Federal protections already limit your liability for fraudulent charges, so victims often pay nothing out of pocket. Monitoring your accounts and checking your credit report yearly at AnnualCreditReport.com achieves more for free. Our guide to reading your credit report covers what to look for.
Flight, laptop, and phone insurance. Single-item policies for losses you can cover from savings.
Wedding insurance. Some risks may already be covered by vendor contracts or homeowners policies. And it excludes the most likely cause of cancellation anyway.
Rental car insurance at the counter. Check first — your existing auto policy or credit card may already cover it.
The pattern: insure broad categories of catastrophic risk, not individual objects or events.
The Deductible Decision
Your deductible is what you pay before coverage starts. Raising it lowers your premium.
This is one of the more reliable ways to reduce insurance costs, and it depends entirely on one thing: whether you have savings to cover the higher amount.
If you have a funded emergency fund, a higher deductible usually makes sense. You are self-insuring the small stuff, which is exactly what an emergency fund is for, and paying less every month for the coverage that matters.
If you do not have that cushion, keep the deductible low. A high deductible you cannot pay is not a saving — it is a claim you cannot afford to make.
This is one of several ways an emergency fund quietly pays for itself. Our guide covers how much you should have set aside.
Where Insurance Sits in the Order
Insurance is protection, not growth. It belongs early in your financial plan rather than late, because everything built afterward depends on it surviving.
A reasonable sequence: health coverage first, since medical costs are the most common catastrophic risk. Liability coverage on car and home, since those are legally required or nearly so. Disability next, particularly if you are a sole earner. Term life if anyone depends on your income.
Then the rest of the plan — emergency fund, debt, savings, investing — as covered in how much you should save each month.
The reason ordering matters: an uninsured catastrophic event does not just cost you the event. It puts the cost on a credit card, and a large balance at 20-plus percent interest becomes its own long-running problem. Our guide to what happens when credit card debt becomes unmanageable traces where that leads.
Two Reviews Worth Doing
Once a year, check what you are paying for. People accumulate policies and forget them. Look at what is being deducted and confirm each one still corresponds to a real risk.
After any major life change, reassess. A child, a marriage, a house, a new job, someone becoming financially dependent on you. These change what you need, usually in the direction of more life and disability coverage rather than less.
The Bottom Line
Four things are worth insuring for most people: your health, your income, your dependents if you have them, and your liability to others.
Nearly everything else is a product sold on anxiety, covering a loss you could absorb from savings.
Cover the catastrophic. Self-insure the annoying. Then stop thinking about it until something in your life changes.
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