The three main variables in a mortality table have been age, gender, and use of tobacco. More recently in the US, preferred class specific tables were introduced. The mortality tables provide a baseline for the cost of insurance. In practice, these mortality tables are used in conjunction with the health and family history of the individual applying for a policy in order to determine premiums and insurability. Mortality tables currently in use by life insurance companies in the United States are individually modified by each company using pooled industry experience studies as a starting point. In the 1980s and 90’s the SOA 1975-80 Basic Select & Ultimate tables were the typical reference points, while the 2001 VBT and 2001 CSO tables were published more recently. The newer tables include separate mortality tables for smokers and non-smokers and the CSO tables include separate tables for preferred classes.

Recent US select mortality tables predict that roughly 0.35 in 1,000 non-smoking males aged 25 will die during the first year of coverage after underwriting.[2] Mortality approximately doubles for every extra ten years of age so that the mortality rate in the first year for underwritten non-smoking men is about 2.5 in 1,000 people at age 65.Compare this with the US population male mortality rates of 1.3 per 1,000 at age 25 and 19.3 at age 65 (without regard to health or smoking status).

The mortality of underwritten persons rises much more quickly than the general population. At the end of 10 years the mortality of that 25 year-old, non-smoking male is 0.66/1000/year. Consequently, in a group of one thousand 25 year old males with a $100,000 policy, all of average health, a life insurance company would have to collect approximately $50 a year from each of a large group to cover the relatively few expected claims. (0.35 to 0.66 expected deaths in each year x $100,000 payout per death = $35 per policy). Administrative and sales commissions need to be accounted for in order for this to make business sense. A 10 year policy for a 25 year old non-smoking male person with preferred medical history may get offers as low as $90 per year for a $100,000 policy in the competitive US life insurance market.

The insurance company receives the premiums from the policy owner and invests them to create a pool of money from which it can pay claims and finance the insurance company’s operations. Contrary to popular belief, the majority of the money that insurance companies make comes directly from premiums paid, as money gained through investment of premiums can never, in even the most ideal market conditions, vest enough money per year to pay out claims.[citation needed] Rates charged for life insurance increase with the insurer’s age because, statistically, people are more likely to die as they get older.

Given that adverse selection can have a negative impact on the insurer’s financial situation, the insurer investigates each proposed insured individual unless the policy is below a company-established minimum amount, beginning with the application process. Group Insurance policies are an exception.

This investigation and resulting evaluation of the risk is termed underwriting. Health and lifestyle questions are asked. Certain responses or information received may merit further investigation. Life insurance companies in the United States support the Medical Information Bureau (MIB), which is a clearinghouse of information on persons who have applied for life insurance with participating companies in the last seven years. As part of the application, the insurer receives permission to obtain information from the proposed insured’s physicians.

Underwriters will determine the purpose of insurance. The most common is to protect the owner’s family or financial interests in the event of the insurer’s demise. Other purposes include estate planning or, in the case of cash-value contracts, investment for retirement planning. Bank loans or buy-sell provisions of business agreements are another acceptable purpose.

Life insurance companies are never required by law to underwrite or to provide coverage to anyone, with the exception of Civil Rights Act compliance requirements. Insurance companies alone determine insurability, and some people, for their own health or lifestyle reasons, are deemed uninsurable. The policy can be declined (turned down) or rated.[citation needed] Rating increases the premiums to provide for additional risks relative to the particular insured.

Many companies use four general health categories for those evaluated for a life insurance policy. These categories are Preferred Best, Preferred, Standard, and Tobacco.[citation needed] Preferred Best is reserved only for the healthiest individuals in the general population. This means, for instance, that the proposed insured has no adverse medical history, is not under medication for any condition, and his family (immediate and extended) have no history of early cancer, diabetes, or other conditions.[5] Preferred means that the proposed insured is currently under medication for a medical condition and has a family history of particular illnesses.[citation needed] Most people are in the Standard category.[citation needed] Profession, travel, and lifestyle factor into whether the proposed insured will be granted a policy, and which category the insured falls. For example, a person who would otherwise be classified as Preferred Best may be denied a policy if he or she travels to a high risk country.[citation needed] Underwriting practices can vary from insurer to insurer which provide for more competitive offers in certain circumstances.

As with most insurance policies, life insurance is a contract between the insurer and the policy owner whereby a benefit is paid to the designated beneficiaries if an insured event occurs which is covered by the policy.

The value for the policyholder is derived, not from an actual claim event, rather it is the value derived from the ‘peace of mind’ experienced by the policyholder, due to the negating of adverse financial consequences caused by the death of the Life Assured.

To be a life policy the insured event must be based upon the lives of the people named in the policy.

Insured events that may be covered include:

* Serious illness

Life policies are legal contracts and the terms of the contract describe the limitations of the insured events. Specific exclusions are often written into the contract to limit the liability of the insurer; for example claims relating to suicide, fraud, war, riot and civil commotion.

Life-based contracts tend to fall into two major categories:

* Protection policies – designed to provide a benefit in the event of specified event, typically a lump sum payment. A common form of this design is term insurance.
* Investment policies – where the main objective is to facilitate the growth of capital by regular or single premiums. Common forms (in the US anyway) are whole life, universal life and variable life policies.