Choosing the Right Term Length

A term policy is only useful while it is in force. This guide shows how to match the length to the debts and dependents it protects.

Last updated: October 12, 2026. The NAIC life insurance page was read on that date. Term suggestions and premium arithmetic were computed with this site's term-length code. Premiums used are hypothetical, not quotes.

What a term is

The NAIC describes term insurance as coverage for a set period, commonly 1, 5, 10 or 20 years, or until a specified age, and notes that a death benefit is paid only if the policyholder dies during the term. It also says term insurance is generally more affordable than permanent insurance, particularly in the early policy years. The practical question is how long the people who rely on your income will need the protection.

The rule this site uses

The coverage estimator picks the longest of up to three needs and rounds it up to the next standard term (10, 15, 20, 25 or 30 years):

• Years until your youngest child reaches 22, a rough age for finishing school and becoming independent;
• Years left on the mortgage, so the home is not a burden on a survivor;
• Years until you plan to retire, when your earnings, and the need to replace them, end.

The rule uses the longest need because each shorter need is then covered automatically.

Worked examples

Rounding up is deliberate. The standard terms are discrete, so the nearest available length is the one at or above the need. When the exact length does not exist, buying a little extra protection is cheaper than discovering a gap.

What longer costs

A longer term usually has a higher monthly premium, and you pay it for more years. With hypothetical premiums of $30 a month for a 20-year policy and $45 a month for a 30-year policy, the total premiums are $7,200 and $16,200. The extra $9,000 buys ten more years of protection, and the premium is locked in at your current age and health. That is often cheaper than starting a new policy at 50 or 55. The right comparison is not "20 versus 30 years" in isolation but what a new policy would cost when the old one expires, if you could still qualify. The underwriting guide explains why age and health matter at that point.

Alternatives to one long policy

• Laddering: two or more policies of different lengths, for example a large 30-year amount for the mortgage and a smaller 20-year amount for child-raising costs. The total coverage steps down as obligations shrink.
• Renewable terms: the NAIC notes renewable term policies can be renewed without proof of insurability while premiums are paid. Renewal prices typically rise with age.
• Permanent insurance: lasts for life and builds cash value, at a much higher premium. The term versus whole life calculator compares them.

Review the choice

Your needs change. Children grow, the mortgage gets paid down, and savings accumulate. When a major event occurs, such as a birth, a new home or a job change, rerun the coverage estimator. Do not cancel a policy before a replacement is in force.

Find your term in the coverage estimator. These guides are for education and are not financial, tax, legal or insurance advice. Nothing you type into the calculators is sent anywhere.