You can apply for a life insurance policy if you have cancer, but while treatment is still going on an insurer may hold off until it ends, and none can promise an outcome before seeing your details. Cover you took out before the diagnosis is a separate question, and this page deals with both.

Macmillan Cancer Support's Support Line is free and confidential, for people living with cancer and their family and friends, including anyone just diagnosed or having treatment. It is open every day of the week, from 8am until 8pm, on 0808 808 00 00.

The focus here is cancer being treated now that is not terminal. Once treatment is over, see getting life insurance after cancer treatment; for a terminal diagnosis, new cover with a terminal diagnosis; and for cover that pays on diagnosis, critical illness cover after cancer.

An insurer weighs your own diagnosis and treatment plan, which no general guide can do. If you would like help with that, an FCA-authorised broker could go over it with you by telephone without charge; contact details, never medical ones, are all that goes into the form on this page.

Can you apply for life insurance during cancer treatment?

You can, though an answer may not come straight away. Aviva's cancer guidance, last updated on 12 May 2026, notes that an insurer's criteria can turn on the type of cancer and on whether you are still undergoing treatment. Speaking of providers in general rather than setting a rule of its own, it adds that many hold back until at least a year after the last treatment, so a person still in treatment may not qualify yet.

Legal & General's customer leaflet Underwriting explained (W10188 09/25) calls this postponement. Among its reasons for not being able to offer cover yet are a recent serious medical event, with cancer one of its examples, and being in the middle of medical investigations or waiting for an operation; it undertakes to let you know when a fresh application can be considered. Waiting is one of several outcomes it lists, alongside cover on standard terms, a higher premium, changed benefits, an exclusion, or no cover where the risk is judged too high and unlikely to fall, which it says is usually kept for current or recent serious conditions.

Macmillan's page on insurance and cancer (reviewed 1 September 2023, and marked as being reviewed again) sees it from the applicant's side: while tests or treatment are still going on, an insurer might turn down cover for now, and may agree to look at the application again once you know about your diagnosis or have finished treatment. VitalityLife's underwriting pages, which are adviser material marked for UK financial advisers only, say a decision is usually delayed when someone has been diagnosed recently or has symptoms still under investigation, and that exclusions are never applied to its Life Cover. More on how insurers weigh an application is in what underwriting means.

What happens to life insurance you already have?

For cover taken out before the diagnosis, the answers you gave when you applied are what count. A Legal & General guide to pre-existing conditions, dated 16 March 2026, sets out the condition plainly: "As long as you supply full and accurate information in your original application, and pay your premiums when due, your life insurance cover will remain in force for the duration of your policy." If the information given was inaccurate, it says, an insurer has the right to invalidate the policy.

On whether to tell your insurer, Aviva's cancer guidance says that, as a general rule, a diagnosis after the policy has started is not something you have to report. The exception it gives is a policy carrying extra benefits, such as critical or terminal illness cover, or added support like counselling or virtual GP appointments, which it suggests may help during this time. It also says most life policies cover death from many causes, cancer among them. Its separate article on pre-existing conditions (last updated 7 January 2025) lists what can follow if an insurer finds inaccuracies in an application: a higher price, a later start date, or cancellation.

Your policy schedule shows which benefits you hold, and Macmillan's advice for questions about a policy is to contact the insurer. How careless and deliberate mistakes are treated is explained in the duty to disclose on a life insurance application, and the grounds for turning down a claim in whether an insurer can refuse a claim.

How can you prepare for an insurer's questions during treatment?

Macmillan says the insurer "will ask about the cancer", perhaps including whether it can be cured, and recognises that some questions may be hard to face; if so, a broker or financial adviser could look for policies on your behalf, and it gives the British Insurance Brokers' Association (0370 950 1790, Monday to Friday, 9am to 5pm) as a way to find one. It suggests jotting down a few points before you call, among them:

  • the type of cancer and the date of diagnosis;
  • your treatment plan, and any symptoms or side effects;
  • results of tests and scans, and the stage and grade;
  • referrals for appointments or tests still to come.

VitalityLife's adviser material lists what it needs about a tumour: where it is, its type, whether it has spread, and the dates of diagnosis and of the end of treatment. It may then obtain a GP report on size, grade and stage. Typical application questions are in health questions on a life insurance application.

If an insurer has already said no or not yet, what to do after a decline covers asking why, and life insurance with a medical condition how insurers approach health generally, with related guides gathered under health and underwriting.

Whenever you feel up to it, a broker's free call can be requested from the form on this page; keep the notes above close by for it. Nothing about it binds you.

Is there life cover that does not depend on your health?

Over-50s plans are one route. Aviva's article on pre-existing conditions describes its Over 50s Life Insurance as covering you for the rest of your life whatever your health, provided you can keep up the payments, and notes that the plan never has a cash-in value.

These plans work differently from underwritten cover. Guaranteed life insurance explained sets out who qualifies and the trade-offs, and life insurance over 50 compares plans.

What if the cancer becomes terminal while you hold a policy?

Terminal illness is a different situation from cancer in treatment, and a policy may include a benefit for it. Aviva says such cover usually comes within the life insurance policy itself, though some providers offer it separately, and on its own policy: "With us, if you’re diagnosed with a terminal illness that meets our policy definition, and you’re not expected to live longer than 12 months we’ll pay out the value of your policy." It will not pay if your doctor thinks you might live longer or if there is treatment that could extend your life.

Whether your policy has the benefit, and how its definition reads, is in your own documents. How terminal illness benefit works compares definitions, and if your policy includes critical illness cover, what critical illness cover pays for cancer explains how cancer is defined there.

Frequently asked questions

Which life insurance is best for cancer patients?

There is no single best policy, and this guide does not rank insurers. What differs is how each insurer would treat your type of cancer and where you are in treatment, as the outcomes described earlier show.

Can I get life insurance if I have stage 4 cancer?

Spread is among the details insurers ask about, and VitalityLife's guidance for advisers says: "If the cancer has metastasized beyond the organ of origin, most cases will be declined." That is one insurer's wording, and others may assess spread differently; how the insurers a broker works with would look at yours is something the broker can ask for you, free, on the call-back.

What if I am diagnosed after applying but before the policy starts?

Legal & General's leaflet says: "You must tell us of any change to the information given on your application between the date of your application and when your policy starts." If that is not done, it warns, a claim may not be paid and the policy may be amended or cancelled.

Will the insurer contact my doctor?

It may ask for a medical report. Legal & General says your consent is needed first. Once a report is requested you are notified, and you then have 21 days, should you wish, to book a consultation with your doctor to review it.

Should you want to talk any of this over, whenever that is, a broker will phone at no cost once you send the form, and you can stop at any point.

Sources

  • Macmillan Cancer Support, Macmillan Support Line (undated), read 22 October 2026. macmillan.org.uk
  • Macmillan Cancer Support, Insurance and cancer (reviewed 1 September 2023; the page says it is being reviewed), read 22 October 2026. macmillan.org.uk
  • Aviva, Life insurance and cancer (last updated 12 May 2026), read 22 October 2026. aviva.co.uk
  • Aviva, Pre-existing medical conditions and life insurance (last updated 7 January 2025), read 22 October 2026. aviva.co.uk
  • Legal & General, Underwriting explained, customer leaflet (W10188 09/25), read 22 October 2026. legalandgeneral.com
  • Legal & General, Life insurance with pre-existing medical conditions (16 March 2026), read 22 October 2026. legalandgeneral.com
  • VitalityLife, Conditions covered, cancer entry (adviser site, marked for UK financial advisers only; undated), read 22 October 2026. adviser.vitality.co.uk
  • VitalityLife, Underwriting (adviser site, marked for UK financial advisers only; undated), read 22 October 2026. adviser.vitality.co.uk