Health Insurance for Couples and Families: How It Works

Last checked: 31 October 2026

Private health insurance can cover more than one person. A couple or a family can be covered on one shared policy, or each person can have a policy of their own. Either way, each person's cover is usually priced and assessed in its own right, so adding someone adds to the total premium. The sections below explain how joint and individual policies work, how children are added, and how the excess, cover levels and underwriting usually apply to each person.

What a family policy is

A family policy, sometimes called a joint policy, is one policy that lists more than one person. It might cover a couple, a parent and children, or a couple and their children. There is one renewal date, one set of documents and usually one payment.

Being on the same policy does not mean everyone shares one pot of cover. In most cases each person listed is treated as a member with their own cover. If one person makes a claim, the others keep their own cover as before.

Joint policy or separate policies

There are two common ways for a household to be covered.

A shared policy is simpler to manage. Separate policies give each person full control over their own cover and mean a change for one person does not touch the others. Some insurers offer a discount when more than one person is covered on the same policy.

Adding a partner

A partner can usually be added when the policy is first taken out or at a later date, often at renewal. Their premium is worked out from their own age, where they live and the cover chosen, so a couple of different ages will not pay the same amount each. The partner answers their own health questions or goes through their own underwriting.

Adding children

Children can usually be added to a parent's policy. Children usually cost less to cover than adults, because their premiums are worked out from their age like everyone else's. Some insurers offer a lower price when several children are covered, but this varies.

Insurers set an upper age limit for a child to stay on a parent's policy as a child, often somewhere between 18 and the mid-20s, sometimes higher for children in full-time education. Once a child passes that age, they may move to their own policy or be added as an adult. The limit and how it works differ between insurers and are set out in the policy wording.

A newborn can usually be added after birth. Some insurers add a newborn on the same terms as a parent, without separate medical underwriting, if the baby is added within a set time after birth, often a few months. The rules differ between insurers. Cover for routine pregnancy and birth is not usually part of private health insurance.

How the excess usually applies

The excess is the amount paid towards a claim before the insurer pays the rest. On a family policy it is often applied per person, not once for the whole policy. That means if two people claim in the same policy year, an excess may be due for each of them.

It can be due once per person per policy year, once for each new claim, or, on some policies, once for the whole policy. A higher excess usually means a lower premium. The price effect of the excess is covered in more detail in the guide to how much private health insurance costs.

How cover levels usually apply

Most policies have a core part that pays for treatment when someone is admitted to hospital as an inpatient or day patient. On top of that, there are options such as outpatient cover for consultations, tests and scans.

On a family policy, the core cover is usually the same for everyone. Some insurers let options be chosen per person, so one member could have full outpatient cover and another a limited amount. Yearly limits, such as a cap on outpatient costs, normally apply to each person separately rather than being shared across the family.

Underwriting for each member

Underwriting is how the insurer decides what each person's cover will and will not include, based on their medical history. On a family policy the type of underwriting is usually chosen for the whole policy, but each member's medical history is looked at individually.

• Moratorium underwriting. No full medical history is asked for at the start. Conditions a person had in the years before the policy began are excluded at first, and may become eligible after a clear period, often two years without symptoms or treatment.
• Full medical underwriting. Health questions are answered for each person, and the insurer says up front what is excluded for that person.

Exclusions are personal. A condition that one family member has does not affect what is covered for the others. Pre-existing conditions and chronic conditions are usually not covered, for any member of the policy.

What changes the total price for a family

The total premium for a family is the sum of what each person's cover costs, less any multi-person discount. The main things that move it are:

• How many people are covered, and their ages.
• Where the family lives, as private treatment costs vary across the country.
• The excess chosen, and whether it applies per person.
• The level of outpatient cover for each person.
• The hospital list on the policy.

As a guide for one adult, the average for a 35-year-old non-smoker is around £850 a year (about £71 a month). A family's total depends on who is included and how the cover is set up.

People can usually be added or removed during the policy, for example when a child moves to their own policy. A broker can explain how these options work on the policies available to a household.