# When to Self-Insure: The Framework for Deciding What Not to Buy
The insurance industry is adept at selling coverage at the point of maximum emotional vulnerability — at the register when you're buying an expensive appliance, at the car rental counter when you're in an unfamiliar city, at the airline checkout when you're worried about travel disruption. Most of these add-on products have loading factors of 50–70%, meaning the expected return on your premium dollar is $0.30–$0.50.
Self-insurance means accepting a risk rather than paying to transfer it. It works when two conditions are met: the potential loss is recoverable within your financial position, and you have (or can build) a fund to absorb it.
The self-insurance framework
**Question 1: If this loss occurred, could I absorb it without financial catastrophe?**
A $500 phone screen repair — yes, for most people. A $200,000 house fire — no, for most people. The threshold varies by wealth, but the principle is consistent: small, recoverable losses are poor candidates for insurance; catastrophic, unrecoverable losses are good candidates.
**Question 2: What is the loading factor on this product?**
Extended warranties on electronics typically pay out $0.30–$0.50 per premium dollar. Airline travel insurance: $0.40–$0.60. Rental car damage coverage from a credit card is free (check your card). The worse the loading factor, the more clearly self-insurance wins.
**Question 3: Does this risk repeat, allowing me to benefit from pooling it myself?**
You buy many products over time. If you self-insure each one and put the premium savings into a "self-insurance fund," you become your own insurer across your own risk pool. Statistically, you come out ahead by the loading factor — typically 40–70 cents per dollar.
Long-Term Care Planning
LTC costs have historically inflated 4-5%/yr. The choice is usually between buying LTC insurance early (premiums jump after 60) or self-funding from invested assets.
That's 133% of your liquid assets.
Educational illustration — not financial advice. Math: @/lib/finance/insurance.ts. Doesn't model Medicaid spend-down, hybrid life-LTC products, or the timing risk of insurance carriers raising premiums on existing policies (which has happened).
Common products where self-insurance wins
**Extended warranties:** Appliances and electronics are most likely to fail in the first 30 days (covered by manufacturer warranty) or after the expected useful life. Consumer Reports data: extended warranties are almost never worth their cost.
**Rental car collision damage waivers (CDW):** If you have auto insurance with collision coverage, your policy extends to rental cars. If you have a credit card with primary rental coverage, it's also covered. The rental company's CDW ($15–$30/day) is almost always redundant.
**Flight cancellation/interruption insurance:** For a $300 domestic flight, the insurance often costs 10% of the ticket and pays out rarely enough to make it negative expected value. Credit cards with travel protections often provide equivalent coverage.
**Cell phone protection plans:** $15–$25/month from the carrier. If you don't file a claim for 3 years, you've paid $540–$900 for coverage — potentially more than the phone's depreciated value.
**Building the self-insurance fund:** Take every insurance premium you decide not to pay and redirect it to a dedicated account. This creates a self-insurance reserve that accumulates over time, both from saved premiums and from investment returns.
---
*Related: [How insurance works](./how-insurance-works) — understanding loading factors and when negative expected value is rational. [Deductible vs. premium](./deductible-vs-premium-tradeoff) — the liquid reserve that makes self-insurance possible.*
Frequently Asked Questions
Should I buy extended warranties on electronics?
Extended warranties are typically poor value, with expected costs exceeding benefits for most buyers. Manufacturers' defects occur early, covered by standard warranties, while later failures often cost less than warranty premiums. Self-insuring through savings is mathematically superior for most consumer electronics.
Is it worth buying travel insurance?
Travel insurance is worth buying only for expensive, non-refundable trips or if you have pre-existing conditions. For most budget trips or when you can absorb the loss, self-insuring is the rational choice. Calculate the premium cost versus your actual financial exposure to determine value.
What is self-insurance and when is it appropriate?
Self-insurance means accepting financial risk rather than paying for insurance protection—appropriate for small, recoverable losses you can absorb. Examples include routine medical deductibles or minor property damage. Use self-insurance for frequent, predictable costs and buy insurance only for large, catastrophic risks you cannot afford.