NISM-Series-X-B: Investment Adviser (Level 2) · Life Insurance Products

Basics of Life Insurance and Principles of Insurance

Updated 11 October 2026 · Fact-checked

Life insurance is a contract where the insurer pays a sum on death or survival in return for premiums. It works by pooling many people's risk. To answer exam questions, match the facts to a principle: insurable interest, utmost good faith, indemnity (which does not apply to life cover), proximate cause or contribution.

Understand Basics of Life Insurance and Principles of Insurance

Life insurance is a contract between you (the policyholder) and an insurer. You pay premiums. The insurer promises to pay a fixed sum assured if a specified event happens, such as death during the term or survival to maturity. The event is certain to occur sooner or later for death, but its timing is uncertain.

Insurance works through risk pooling. Many people pay small premiums into a common pool. Only a few suffer a loss in a given year. The pool pays those few. The insurer uses the law of large numbers: with a large group, actual claims stay close to the expected number, so premiums can be priced reliably.

A contract of insurance rests on a few core principles. Insurable interest means you must stand to suffer a financial loss if the insured life is lost. Utmost good faith (uberrima fides) means both sides must disclose all material facts honestly. Normal contracts only need you not to lie. Insurance needs you to volunteer what matters.

Indemnity means the insurer restores you to your pre-loss position, no better. It applies to general insurance such as fire or motor. It does not apply to life insurance, because the value of a human life cannot be measured in money. Life insurance pays the agreed sum assured. It is a contract of assurance, not indemnity. Related principles such as subrogation and contribution therefore do not apply to life policies in the same way.

Other principles you should know: proximate cause (the nearest effective cause of loss decides whether the claim is covered) and contribution and subrogation (relevant to indemnity contracts). Life insurance also differs from general insurance in term (long-term versus usually one year), payment (fixed sum versus actual loss) and savings element (many life plans have one).

Key formulas to remember

Insurable interest in life insurance: Insurable interest must exist at the time the policy is taken; In life insurance it is needed at inception. It need not exist at the time of claim. In general insurance it is needed at the time of loss.
Indemnity: Claim payable = lower of actual loss and sum insured; Applies to general insurance. Not applicable to life insurance, which pays the agreed sum assured.
Utmost good faith: Duty to disclose all material facts, by both parties; Non-disclosure or misstatement of a material fact can make the contract voidable at the option of the insurer.
Insurable interest over one's own life: A person is presumed to have unlimited insurable interest in their own life; Spouse and dependent children are commonly accepted as having insurable interest through natural love and affection or financial dependence.
Law of large numbers: Larger group → actual claims closer to expected claims; Basis of premium pricing and risk pooling.

How to solve Basics of Life Insurance and Principles of Insurance questions

Most questions give a short scenario or a statement and ask which principle applies or whether a statement is true. Use this method.

1Read the last line first to see what is asked: identify the principle, or pick the correct or incorrect statement.
2Mark whether the scenario is life insurance or general insurance. This decides if indemnity applies.
3Find the key fact: a relationship, a hidden fact, a loss amount, or a cause of loss.
4Match it to a principle: relationship or financial stake means insurable interest; hidden or false information means utmost good faith; loss compensation means indemnity; cause of loss means proximate cause.
5Check the timing rule: for life insurance, insurable interest is tested at inception.
6Eliminate options that apply general insurance rules to life insurance, or the reverse.
7Pick the option that fits the exact wording. Words like 'always' or 'only' are often traps.

Quickest way: Keyword-to-principle matching

When to use it: Use when you have under a minute per question and the scenario is short.

Hidden fact, false answer in proposal form: utmost good faith.
Relationship or financial loss if the person dies: insurable interest.
Compensation limited to actual loss: indemnity, general insurance only.
Fixed sum paid on death: life insurance, no indemnity.
Cause of loss disputed: proximate cause.
Two insurers share a loss: contribution, general insurance.

Common mistakes in Basics of Life Insurance and Principles of Insurance

Saying indemnity applies to life insurance.
Students learn indemnity as a core principle of all insurance.
Fix: Remember that life has no measurable money value. Life policies pay the agreed sum assured. Indemnity applies to general insurance.
Believing insurable interest must exist at the time of claim in life insurance.
It is mixed up with the general insurance rule.
Fix: For life insurance it is required at inception. For general insurance it is required at the time of loss.
Treating utmost good faith as the same as ordinary honesty in contracts.
Students think only lying is wrong.
Fix: Utmost good faith needs active disclosure of all material facts, even if not asked. Silence on a material fact can be a breach.
Assuming you can insure any person's life.
Students forget the need for a financial stake or recognised relationship.
Fix: Check whether the proposer has insurable interest, such as in own life, spouse or a dependent. A stranger has none.
Confusing risk pooling with risk transfer to a single party only.
Insurance is described as transfer of risk to the insurer.
Fix: The insurer carries the risk but funds claims from a pool of premiums. Law of large numbers makes this workable.

Worked examples

Example 1

Ravi takes a life policy on his business partner Sanjay, on whose skills his firm depends. Later the partnership ends, and Sanjay dies after that. Which statement is correct for a life insurance contract?

Show the solution

Identify the principle: insurable interest, as Ravi has a financial stake in Sanjay's life as a partner.
Identify the timing rule: in life insurance, insurable interest must exist when the policy is taken.
At inception the partnership existed, so interest existed.
Its later loss does not by itself invalidate the claim in life insurance.

Answer: The policy is valid, as insurable interest existed at inception. It need not exist at the time of death.

Example 2

A person suffers a death claim under a life policy with a sum assured of ₹50,00,000. The family's estimated financial loss is only ₹30,00,000. How much does the insurer pay?

Show the solution

Check the type: this is life insurance.
Indemnity does not apply, since the value of life cannot be measured in money.
The insurer pays the agreed sum assured, regardless of estimated loss.
Sum assured is ₹50,00,000, subject to the policy being valid.

Answer: ₹50,00,000, because life insurance is not a contract of indemnity.

Exam tips

Always state whether the question is about life or general insurance before choosing a principle.
Memorise the timing of insurable interest: inception for life, time of loss for general.
Watch for options that say indemnity applies to life insurance. These are almost always wrong.
Learn the life versus general insurance differences: term, payment basis, savings element and indemnity.
On NISM X-B negative marking is 25% of the marks of the question, so skip only when you cannot eliminate at least two options.

Practice questions from Life Insurance Products

Basics of Life Insurance and Principles of Insurance in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Basics of Life Insurance and Principles of Insurance: frequently asked questions

What is insurable interest in life insurance?

It is the financial stake you have in the continued life of the insured person. You have it in your own life and, commonly, in the lives of dependents such as a spouse or children. It must exist when the policy is taken.

Why does indemnity not apply to life insurance?

A human life cannot be valued in money, so loss cannot be measured and restored. The insurer pays the agreed sum assured instead. That is why life insurance is called assurance.

What is the difference between life insurance and general insurance?

Life insurance usually runs for a long term and pays a fixed sum on death or survival. General insurance usually runs for one year and pays for actual loss, subject to indemnity. Many life plans also include savings or investment.

What happens if a material fact is not disclosed?

Under utmost good faith, non-disclosure or misstatement of a material fact can allow the insurer to treat the contract as voidable. The exact treatment depends on the policy terms and the applicable law.