Family health insurance compared: what children, dependants and single parents change in 2026–27

What does a family health insurance policy cover in Australia in 2026–27?

A family health insurance policy in Australia covers two adults and their dependants under one premium. PrivateHealth.gov.au statements describe it as “two adults & dependants (3 or more people, only 2 of whom are adults)”. Three other memberships sit beside it, and each is priced separately on its own Private Health Information Statement (PHIS):

• Single parent: one adult and dependants.
• Extended family: two adults and dependants, including non-student dependants. One such statement, Peoplecare’s Bronze Plus Hospital $750 for NSW and the ACT, issued 1 April 2026, covers children, students and non-students up to and including age 30.
• Couple: two adults and no one else.

A family can hold hospital cover, extras cover or a combined policy, and every person on the policy holds the same level of cover. Hospital cover is what removes the Medicare Levy Surcharge; extras never does. The hospital tiers are set out in Gold, Silver, Bronze and Basic compared.

For a family, three rules work differently from a single policy in 2026–27. The surcharge and rebate are tested on family thresholds starting at A$210,000. A hospital policy can carry an excess of up to A$1,500 a year, against A$750 for a single, and still remove the surcharge, according to PrivateHealth.gov.au. And each insurer decides how old a dependant can be. This page is general information, not personal advice, and does not take a family’s income or health into account.

What does family cover cost compared with a couple, two singles or a single parent?

Every Australian insurer sets a separate price for each membership type, and no primary source publishes an average family premium. So the cleanest comparison is one policy at all four memberships. HBF’s Gold Hospital Elevate with a A$750 excess per person, in NSW and the ACT, was issued at these prices on 1 April 2026.

PrivateHealth.gov.au PHIS HBF/H22/NBRIO10, NBRIL1D, NBRIM20 and NBRIN2D, all issued 1 April 2026, opened 8 November 2026. Yearly figures are monthly times 12, a Plain Cover calculation. Last verified 8 November 2026.

On these four statements, children cost two adults A$42.11 a month, or A$505.32 a year, which is 5.6% on top of the couple price. The same children cost one adult A$252.68 a month, or A$3,032.16 a year. The family price is A$42.14 a month below what two separate single policies would cost.

Two family details on the statements are easy to miss. HBF’s family and single-parent versions both say “Excess payments do not apply to hospital admissions for dependants”, so a child’s admission carries no A$750 excess. St Lukes’ family statement says the same. And the excess cap on the single-parent version stays at A$750 a year, the single figure, not A$1,500.

Who counts as a dependant on a family policy, and until what age?

In Australia the law sets the outer limits and each insurer sets its own rule inside them. PrivateHealth.gov.au says Parliament passed the change in June 2021 that raised the maximum age of dependants from 24 to 31 and removed the age limit for dependants with a disability. The legislation defines a dependant as a single person aged 18 to 31, and a person with a disability as an NDIS participant aged 18 or over. It is optional: an insurer that capped dependants at 24 “may increase the maximum age to 29 years rather than 31 years”. The PrivateHealth.gov.au glossary adds that an insurer may require conditions such as full-time study.

Five statements opened on 8 November 2026 show how far apart the rules are, all for NSW and the ACT.

Each statement’s own wording, “up to and including the age of” the figure shown. PHIS issued 1 April 2026, except myOwn’s, issued 17 September 2026. Listed alphabetically by insurer, as examples, not a ranking. Last verified 8 November 2026.

A 23-year-old working full time is covered on two of the five and on none of the three standard family statements. Children who outgrow the policy need cover in their own name, priced from the single statement of the same policy.

Why a dependant on your policy may not count for the Medicare Levy Surcharge

The mistake Australian families make here is treating “dependant” as one word with one meaning. There are two definitions, and they rarely match.

The insurer’s definition decides who the policy covers, and it can run to 30. The ATO’s definition decides who lifts the family surcharge threshold. On its page updated 21 August 2026, the ATO says a child is a dependant for surcharge purposes only if they are under 21, or 21 to 24 and studying full time at school, college or university. A stepchild counts, and so does a child under a court order giving effect to a surrogacy arrangement. A foster child does not.

So a 22-year-old apprentice on an extended family policy is fully covered, and adds nothing to the A$1,500 per child allowance. A 22-year-old full-time university student on the same policy does add it. The ATO also states that “Medicare levy surcharge dependent child is different to dependent persons who may be covered by your private health insurance policy.”

Two rules soften this. PrivateHealth.gov.au says a person covered as a dependant on a family hospital policy does not pay the surcharge, as long as they have no spouse or dependants of their own. And the ATO does not count a dependant’s own income in the family income test, and does not give a dependant a share of the policy for the rebate.

What are the family surcharge and rebate thresholds for 2026–27?

The ATO sets one family table for the Medicare Levy Surcharge and the private health insurance rebate in 2026–27: a base tier up to A$210,000, Tier 1 to A$246,000, Tier 2 to A$328,000 and Tier 3 above that. The rates and the full couple table are in the Medicare Levy Surcharge guide for 2026–27 and the rebate tiers guide. What is particular to families is the A$1,500 added “for each MLS dependent child after the first child”. Applied to the base line, that gives:

ATO thresholds, updated 22 June 2026; the per-child additions are a Plain Cover calculation. Last verified 8 November 2026.

In dollars, for an Australian family with combined income for surcharge purposes of A$212,500 and no hospital cover, the per-child rule decides whether anything is owed:

Plain Cover calculation on the ATO rates for each year. Last verified 8 November 2026.

How are single parents tested and priced?

A single parent in Australia is a family for both the surcharge and the rebate. The ATO’s rebate page, updated 22 June 2026, applies the family thresholds to anyone who is “a single parent with one or more dependants” on 30 June, and only the parent’s own income is counted. So a single parent on A$150,000 in 2026–27 sits on the family base tier, under the A$210,000 line, with no surcharge risk and the full 24.118% rebate where the parent is under 65. Tested as a single, the same income would sit in Tier 2, with a 1.25% surcharge of A$1,875 if uninsured and an 8.038% rebate.

On HBF’s Gold Hospital Elevate statement for NSW and the ACT, that single parent pays A$8,086.32 a year before the rebate. At 24.118% the rebate is A$1,950.26, leaving A$6,136.06. At the 8.038% single Tier 2 rate it would have been A$649.98.

The premium is where single parents lose ground. On the same statements the single-parent price is 84.2% of the two-adult family price while covering one fewer adult. CHOICE reported on 14 September 2023 that single parents adding children often faced increases of 60% to 70%, against 5% to 10% for couples. HBF’s 2026 statements sit at a 60% increase.

Worked example: a family of five in Newcastle with a 22-year-old at home, 2026–27

The Moran family lives in Newcastle, NSW. The parents are 47 and 45. Their children are 9, 15 and 22. Combined income for surcharge purposes in 2026–27 is A$212,000. They hold Peoplecare Bronze Plus Hospital $750 as an extended family policy, A$365.85 a month or A$4,390.20 a year before the rebate, issued 1 April 2026. Peoplecare’s single version of the same policy is A$140.71 a month.

If the 22-year-old works full time. The policy covers him, because it covers non-students to 30. For the ATO he is not a surcharge dependant, so the family has two: threshold A$211,500. At A$212,000 the family is in Tier 1 and the rebate is 16.079%, A$705.90 a year. Net premium: A$3,684.30.

If the 22-year-old studies full time. He is now a surcharge dependant, so there are three: threshold A$213,000. The family is on the base tier at 24.118%, A$1,058.83 a year. Net premium: A$3,331.37.

The 22-year-old’s study status is worth A$352.93 a year to this family. Had they held no hospital cover in the first case, the surcharge would have been 1% of A$212,000, A$2,120. On HBF Gold or St Lukes’ standard family policy, a working 22-year-old would need to check the dependant age on that statement first. All figures are a Plain Cover calculation from the PHIS and ATO rates, checked 8 November 2026.

How does the Lifetime Health Cover loading work on a family policy?

Children in Australia never carry a Lifetime Health Cover loading, because the loading starts only from a person’s base day, the 1 July after their 31st birthday, according to PrivateHealth.gov.au. On a family or couple policy the loading is the average of the adults’ individual loadings, which the Lifetime Health Cover loading guide works through in dollars. Two family cases sit outside that.

A dependant with a disability. PrivateHealth.gov.au says the normal rules apply, and the loading is averaged over every adult on the policy. Its example: a 33-year-old who joins her parents’ family policy as a dependant with a disability carries 6%, averaged over three adults to 2% on the policy.

A dependant who leaves at 30. A young adult covered to “up to and including the age of 30” comes off the policy at 31. PrivateHealth.gov.au says a person under 31 has until the 1 July after their 31st birthday to take out hospital cover without a loading. So the gap between leaving the family policy and that 1 July is the window to buy hospital cover in their own name at 0%.

When should a family policy start before a baby is due?

PrivateHealth.gov.au sets the maximum hospital waiting period for pregnancy and birth at 12 months in Australia, and says the mother must have served it before she is admitted. A baby due on 1 December 2027 therefore needs pregnancy and birth cover in place by 1 December 2026, roughly three to four months before conception for that due date. A single or couple membership does not cover the newborn: PrivateHealth.gov.au says the parent must move to a family or single parent membership, and insurers set different deadlines, sometimes several months before the birth. HBF’s Gold family statement of 1 April 2026 lists pregnancy and birth with a 12-month wait.

What does extras cover pay for children’s dental and braces?

On a family extras policy the limits are usually per person, and that decides how far a policy stretches across children. Medicare in Australia pays basic children’s dental through the Child Dental Benefits Schedule (CDBS): up to A$1,158 per eligible child over two calendar years from 2026, for check-ups, cleaning, fillings and extractions. Services Australia says a child is eligible when they are eligible for Medicare, aged 0 to 17 for at least one day of the year, and a parent or the child receives an eligible payment. The CDBS does not cover orthodontic work. The full rules are in does Medicare cover dental.

So braces fall to extras cover. Medibank’s Comprehensive Extras Max single-parent statement for Western Australia, issued 16 September 2026, costs A$298.20 a month. It gives each person a A$1,000 orthodontic opening balance, then A$500 a year, up to a A$3,000 lifetime limit, after a 12-month wait. Its major dental limit is A$1,200 per person a year. A family with two children needing braces gets two lifetime limits, but only after 12 months. How seven policies treat braces is in dental cover compared.

When is a family policy the wrong buy?

A family membership is not automatically the lowest-cost way to cover everyone in an Australian household, and on the 2026 statements read for this page three situations run against it.

Separated parents each buying a single-parent policy. On HBF’s Gold statements for NSW and the ACT, two single-parent policies cost A$1,347.72 a month against A$800.22 for one family policy, A$547.50 more. The ATO treats a child as an equal dependant of each separated parent for surcharge purposes, so both households can use the family threshold.

A grown child who no longer qualifies. On a standard family statement that stops other dependants at 20 or 22, a working 23-year-old is not covered at all, whatever the family pays.

A young adult who needs an extended membership. Peoplecare’s extended family version of Bronze Plus Hospital $750 costs A$365.85 a month, 2.60 times its A$140.71 single version, both issued 1 April 2026. Before paying for the extended membership, families typically price the young adult’s own single policy against the step up from the standard family statement, which has to be read separately.

People in these situations typically read every membership’s statement side by side before choosing. To see current family prices for your own state, compare health insurance.