Understanding Insurance Basics to Make the Right Choices

This is about a 3-minute read.

Understanding the True Role of Insurance

Insurance is a system where many people pool money together, and those who actually experience a risk receive payouts. The key point is that insurance is a "safety net for emergencies" and is fundamentally different from "savings" or "investments."

According to the Japan Institute of Life Insurance, about 89% of Japanese households carry some form of life insurance, yet only 35% say they fully understand their coverage. The average household pays roughly 10 million yen in lifetime premiums, making the financial cost of inadequate understanding substantial.

The basic principle of insurance is based on the "law of large numbers." While risks are unpredictable for individuals, gathering a large group of people allows statistical calculation of occurrence probabilities, which forms the basis for premium pricing. Understanding this mechanism is the first step toward choosing appropriate insurance.

Understanding Public Insurance Systems

Health Insurance

For example, japan's health insurance system is among the most comprehensive in the world. The standard out-of-pocket cost is 30% of medical expenses, and through the high-cost medical expense benefit system, amounts exceeding a certain threshold per month are reimbursed. For those earning between approximately 3.7 million and 7.7 million yen annually, the monthly out-of-pocket cap is around 80,000 yen.

Pension Insurance

The National Pension and Employees' Pension form the foundation supporting retirement life. For company employees enrolled in the Employees' Pension, the average monthly benefit is approximately 140,000 yen. Whether this amount is sufficient depends on individual lifestyle choices.

Employment and Workers' Compensation Insurance

Benefits during unemployment and compensation for work-related injuries or illnesses are also covered by public insurance. Many people unknowingly duplicate this coverage with private insurance. Reading books on insurance fundamentals can help you grasp the full picture of public insurance coverage.

Types of Private Insurance and How to Choose

Life Insurance

For instance, life insurance protects your family's livelihood in the event of your death. If you are single with no dependents, expensive life insurance is often unnecessary. On the other hand, if you have a mortgage or young children, calculate the required coverage amount before considering enrollment.

Medical Insurance

Given the public high-cost medical expense benefit system, the necessity of medical insurance varies greatly by individual. If you have sufficient savings, it may be more rational to skip medical insurance and direct those funds toward savings or investments. However, if you want coverage for advanced medical treatments or private hospital rooms not covered by public insurance, it is worth considering.

Property and Casualty Insurance

Fire insurance and auto insurance are high-priority because potential damages can be substantial. Fire insurance for rental housing is almost always required at the time of contract. If you own a vehicle, voluntary liability insurance for personal injury and property damage should be considered essential.

Pitfalls to Avoid When Choosing Insurance

Fear-Based Sales Tactics

Questions like "What would happen to your family if something happened to you?" can cloud rational judgment. Insurance should be evaluated with numbers, not emotions. Calculate the specific coverage amount needed, subtract what public insurance covers, and supplement only the shortfall with private insurance. This is the rational approach.

Stacking Riders

Adding numerous riders to a basic policy inflates premiums while increasing coverage you are unlikely to use. Keep riders to only those truly necessary and aim for a simple insurance design. Practical books on financial planning can also help inform your decisions.

When to Review Your Insurance

Insurance is not a one-time decision. Required coverage changes with life stage transitions such as marriage, childbirth, home purchase, and children becoming independent. Review your insurance at least once every three years to confirm it still matches your current situation. (Related books may also help)

During reviews, compile a list of your current coverage and premiums, and compare them against what public insurance covers. If you find overlapping coverage or protection that has become unnecessary due to life changes, consider cancellation or reduction.

Key Takeaways

• Understanding Public Insurance Systems
• Types of Private Insurance and How to Choose
• Pitfalls to Avoid When Choosing Insurance
• Health Insurance

Summary - Build on Public Insurance and Choose What You Need

The foundation of insurance selection is accurately understanding public insurance coverage first, then supplementing only the risks that remain uncovered with private insurance. Rather than purchasing excessive coverage driven by anxiety, aim for rational protection design that matches your life stage and financial situation.