Should a Life Insurance Calculation Use Average or Peak Income?

Written by Hannah McCullough Insurance Researcher & Writer

Start with the income figure that best reflects what your family depends on if you die. That often means your highest recent earnings when pay is steady, but a multi-year average may be more honest when commissions, self-employment income, or overtime vary sharply. Then account for debts, existing benefits, and future costs such as education.

This guide explains the difference, how insurers view income, and how to pick a number that fits your situation.

What does “average income” mean in a life insurance calculation?

Average income in a life insurance calculation usually means the mean of your earnings over several years, such as the last three or five years. Some people use this figure to smooth out fluctuations, especially if their income varies from year to year. For example, a freelancer might earn $60,000 one year and $90,000 the next, so an average of $75,000 feels more stable. One common version is calculating coverage using three-year average income, which can smooth the effect of an unusually high or low year.

However, an average can understate current earning power if income has been rising. If you earned $50,000, $60,000, and $70,000 over three years, the average is $60,000 while the current salary is $70,000. The Insurance Information Institute explains that coverage should replace the income dependents would lose, so a historical average should not automatically replace a current, dependable salary.

What does “highest income” mean in a life insurance calculation?

Highest income means using your peak annual earnings, typically your most recent year if it was your best. This approach assumes your family has grown accustomed to that level of spending and would need that amount to maintain their lifestyle. For someone with a steady career, the highest income is often the most recent year, which also accounts for inflation and raises. The target can also depend on choosing gross pay over take-home pay, since the right figure should match what your family actually spends.

Using your highest income can be more protective, but it may overestimate need if your income was unusually high due to a one-time bonus or overtime. For instance, a nurse who worked extra shifts during a pandemic might have a spike that does not reflect their normal earnings. In that case, a blended figure might be more realistic. The key is to match the income figure to the lifestyle you actually want to preserve, not to a temporary peak.

How do insurers use your income in underwriting?

Insurers use financial and personal information in underwriting to decide whether to offer coverage, what to charge, and sometimes how much coverage to issue. The National Association of Insurance Commissioners describes life underwriting as a risk review; it is not a requirement that you use a particular average or highest-income formula.

The NAIC’s consumer guidance notes that some experts suggest five to eight times current income, but it also asks readers to consider dependents, debts, education, final expenses, and inflation. Treat a multiple as a starting point, not an approval limit or a substitute for a needs-based calculation.

Which income figure should you use: average or highest?

The short answer: use your highest recent income if your earnings are stable or rising, and use an average if your income fluctuates significantly. The right choice depends on your specific situation, not on a one-size-fits-all rule. If you are a salaried employee with regular raises, your highest income is likely your current salary, and that is the figure to use. For life insurance for full-time day traders, an average is often the more honest figure because trading income can swing widely from year to year.

If you are self-employed or work on commission, an average over two or three years may give a more realistic picture. For example, a real estate agent might have a banner year followed by a slow one, so an average can prevent a temporary peak from driving the estimate. Also count other household resources: the Insurance Information Institute’s needs example includes Social Security survivor benefits as another source of income, so do not count wages alone. If you freelance, it can help to review choosing income years for freelance sizing before settling on an average.

How to calculate your life insurance needs using income

To calculate your life insurance needs, start with annual income, then adjust for the years of replacement, existing coverage and benefits, debts, housing, education, final expenses, and inflation. The NAIC’s needs checklist asks how much family income you provide, who depends on you, how survivors will repay debts, and how inflation could change future needs. Before running the numbers, it helps to confirm what information a needs calculation requires, such as household spending and existing coverage.

A DIME-style worksheet, debts, income replacement, mortgage, and education, can organize those inputs. It is a planning aid, not a universal formula: subtract dependable survivor benefits and existing coverage, then ask whether the remaining amount is affordable and sufficient for the period your family needs. Affordability also depends on whether net pay should set the budget, since gross income is not the cash available for every bill.

Common mistakes when choosing an income figure

One common mistake is using an outdated income figure, such as your salary from five years ago. If you have received raises, your family’s expenses have likely grown, and an old figure will leave them underinsured. Another mistake is ignoring non-income factors like debts and future expenses, which can be larger than your income multiple.

Do not assume that a paycheck figure alone captures the loss. The Insurance Information Institute points to benefits and services tied to employment, such as employer health insurance and retirement contributions, as possible needs to replace. At the same time, expenses that disappear after your death, such as your own commuting costs, should not be counted as ongoing household needs. A gross or net income replacement target also needs to account for assets and continuing income available to dependents.

When to update your income figure

You should update your income figure whenever your earnings change significantly, such as after a promotion, a job change, or a career break. If you get a raise, your coverage may need to increase to keep pace with your new lifestyle. If you take a lower-paying job, you might be able to reduce coverage, but be careful not to leave your family exposed.

Major life events also warrant a review: marriage, divorce, the birth of a child, or buying a home. These events change your financial obligations and your family’s dependence on your income. The Insurance Information Institute recommends reassessing coverage after significant income and family changes, while cautioning against dropping existing coverage before replacement coverage is active.

How to get a personalized estimate

Once you have chosen an income figure, the next step is to get a personalized estimate of what coverage could cost. You can use an online calculator or speak with a licensed life insurance agent who can walk you through the numbers. The agent can explain term and permanent options and help you compare the contract features with your budget.

When you request an estimate, be ready to provide your age, health, income, and desired coverage amount. The result is an estimate, not a promise of approval or a final policy offer. If you are ready to see an estimated rate in minutes, use the site’s estimate path or speak with a licensed professional.

Choosing between an average and highest recent income is a personal decision. The right figure depends on income stability, household needs, and future plans. If you are unsure, a licensed agent can help you work through the numbers and identify a coverage amount that fits the plan.

For those in demanding roles, such as life insurance for er nurses, the same principles apply. Your income may include shift differentials and overtime, so consider whether an average or your highest year better reflects what your family depends on. A quick conversation with a licensed agent can clarify the best approach for your situation.