How does life insurance underwriting work? The carrier reviews your health, build, medications and records, from your prescription history to your driving record, and places you in a rate class that sets your price. Each carrier draws those class lines differently, which is why the same applicant can get different offers.
Two people of the same age can buy the same term policy and pay very different prices. Almost all of that difference comes from underwriting, the process a carrier uses to estimate how likely you are to die during the policy and then price the coverage accordingly.
This guide explains what carriers look at, how rate classes work, and how one carrier's published 2026 criteria draw the lines. To see what the classes mean in dollars, our guide to term life insurance cost shows published rates by age, and if you would rather skip the exam, our no-exam life insurance guide explains accelerated underwriting.
What Does a Life Insurance Underwriter Review?
The short answer: An underwriter reviews your application answers alongside outside records, including prescription history, MIB reports, your driving record and, when required, exam results and doctors' records.
The application
Your answers about health history, medications, tobacco use, family history, driving, travel, occupation and hazardous hobbies. Everything else is checked against these answers.
Prescription history
Carriers query pharmacy databases to see what has been prescribed to you and when. A medication can reveal a condition that was left off the application.
MIB report
MIB is a data exchange member insurers use to flag information from past applications. You can request your own MIB record for free at mib.com.
Motor vehicle report
Your driving record from the state, including moving violations, suspensions and DUIs.
Paramedical exam and labs
Height, weight, blood pressure, and blood and urine tests that screen for nicotine, cholesterol, glucose, liver and kidney function and more.
Attending physician statement
Records requested from your doctors, typically for larger policies, older applicants or when something in the file needs explaining. These can add weeks to the process.
What Are the Life Insurance Rate Classes?
The short answer: Most carriers use four nonsmoker classes, Preferred Plus, Preferred, Standard Plus and Standard, plus one or two tobacco classes, and each carrier writes its own criteria for them.
To make this concrete, here is how one carrier draws the lines. The figures below come from Banner Life's March 2026 underwriting field guide for advisors. They are one carrier's criteria, not an industry standard, and other carriers set their thresholds differently.
| Criterion | Preferred Plus | Preferred | Standard Plus | Standard |
|---|---|---|---|---|
| Nicotine-free for at least | 36 months | 24 months | 12 months | 12 months |
| Blood pressure (average) | 135/85 or lower | 140/90 or lower | 145/90 or lower | 156/94 or lower |
| Cholesterol to HDL ratio | 4.5 or lower | 5.5 or lower | 6.5 or lower | 8.0 or lower |
Banner's guide measures Preferred Plus blood pressure as an average over the past two years, which means one high reading at an exam does not automatically disqualify you, and a treated reading can still qualify. Preferred Plus in the same guide also requires no parent or sibling death from cardiovascular disease before 60, no more than two moving violations in three years and no DUI in five years. Tobacco users fall into separate classes; the guide lists Preferred Tobacco and Standard Tobacco.
Underwriters look at the whole file. Missing one Preferred Plus threshold by a small margin may drop you one class, while a clean record elsewhere can help. The only reliable way to know your class is a full application, which is why comparing carriers matters.
How Do Height and Weight Affect Your Rate Class?
The short answer: Carriers use build charts that set a maximum weight for each height in each class, so weight alone can move you up or down a class.
In Banner Life's March 2026 guide, for example, a 5-foot-9 applicant can weigh up to 190 pounds and still qualify for Preferred Plus. Heavier applicants at that height can still qualify for Preferred or Standard classes up to the higher limits the chart sets for each.
Build charts are where carriers differ most visibly. Some are lenient on weight but strict on blood pressure or cholesterol, and some credit good lab results when build is borderline. If you are near a class limit, the right carrier can matter more than the scale.
How Do Medications and Health Conditions Affect Underwriting?
The short answer: Carriers care most about whether a condition is diagnosed, treated and stable, so a well-controlled condition often costs far less than an untreated or unstable one.
High blood pressure treated with medication and under control, high cholesterol managed with a statin, or type 2 diabetes controlled with oral medication are common and can often be written at Standard or better. What costs more is a condition that is newly diagnosed, poorly controlled, or combined with complications.
The prescription history check is why honest answers matter. If a medication shows up that is not explained on the application, the carrier will ask, delay the decision, or in some cases decline. Disclosing a condition up front, with the dates and treatment, usually gets a cleaner and faster decision than having the underwriter discover it.
A 45-year-old applicant takes a single blood pressure medication and averages 132/84 across her doctor visits. At a carrier that measures blood pressure the way Banner's guide does, her reading falls within its Preferred Plus limit, so the medication alone may not keep her out of the top class if the rest of the file is clean. At a stricter carrier, the same history might place her a class lower. Illustrative only; actual decisions depend on the full file.
How Do Carriers Define Tobacco and Nicotine Use?
The short answer: Most carriers treat any tobacco or nicotine use in the past 12 months as tobacco, and Banner Life's 2026 guide explicitly includes e-cigarettes.
Cigarettes, cigars, chewing tobacco, vaping, nicotine gum and patches can all count, depending on the carrier. Lab tests detect nicotine byproducts, so an applicant who answers no and tests positive faces a tobacco rate or a decline. Some carriers treat occasional cigar use or nicotine replacement more leniently than daily cigarettes, which is one of the clearest cases where carrier choice matters.
The best nonsmoker classes also require a longer quit. In Banner's March 2026 guide, Preferred Plus requires 36 nicotine-free months and Preferred requires 24. If you have recently quit, applying now at a nonsmoker Standard class and asking for a reconsideration later can make more sense than waiting uninsured.
When Do Carriers Require an Exam or Medical Records?
The short answer: Requirements scale with your age and the coverage amount, with larger policies and older applicants getting more tests and a review of doctors' records.
| Applicant | Typical requirements in Banner's guide |
|---|---|
| Ages 20 to 60, up to $2 million | Abbreviated paramedical exam with blood and urine tests |
| Ages 20 to 60, over $2 million | Exam and labs plus an EKG and an attending physician statement |
| Ages 61 to 70 | Attending physician statement required at every amount |
| Over age 70 | Additional review including a daily activities questionnaire |
Many applicants now qualify for accelerated underwriting, where the carrier relies on data checks instead of a paramedical exam. Whether you qualify depends on age, amount and what the data shows. Our no-exam guide covers how that works and who is a good candidate.
What Happens If You Are Rated or Declined?
The short answer: A rated offer charges more than Standard, a postponement asks you to reapply later, and a decline at one carrier does not mean every carrier will decline you.
Table ratings. Applicants who do not qualify for Standard may be offered a substandard or table rating, which adds a percentage to the Standard premium. Many carriers use steps of about 25 percent per table, though the scale varies.
Flat extras. Some risks, such as private aviation or a recent cancer history, are priced with a flat extra charge per $1,000 of coverage, sometimes for a limited number of years.
Postponements and declines. A carrier may postpone until a condition has been stable for a set period, or decline. Because carriers weigh conditions differently, a decline at one is not the end. Final expense and guaranteed-acceptance options also exist for applicants who cannot qualify for fully underwritten coverage, as our guide to final expense insurance cost explains.
How Can You Prepare for Life Insurance Underwriting?
The short answer: Gather your medication list and doctors' details, prepare for the exam, answer every question accurately and apply to carriers that suit your profile.
Before the exam: fast if instructed, avoid heavy exercise, alcohol and caffeine the day before, and bring a list of medications with doses and the prescribing doctor. Small things such as a high blood pressure reading from rushing in can be avoided.
On the application: answer accurately. Most policies include a contestability period, typically two years, during which the carrier can review the application if you die and deny a claim over a material misstatement.
Where you apply: this is the step people skip. An independent brokerage can compare how different carriers are likely to treat your specific history before you apply, instead of applying to one carrier and hoping. It also helps you decide how much coverage to apply for, since larger amounts bring more requirements.
The Bottom Line
Underwriting turns your health, build, medications and records into a rate class, and the rate class sets your price. Carriers draw the class lines differently: one carrier's March 2026 guide puts Preferred Plus at 36 nicotine-free months, blood pressure of 135/85 or lower and a cholesterol ratio of 4.5 or lower, and other carriers use different numbers.
That is why the carrier you apply to can matter as much as your health. We compare how carriers are likely to treat your profile before you apply, at no cost. Start below, use our quote page, or call and we will walk through your history with you.