Private hospital cover or MLS: find your break-even point

As at: 2026-09-03

Private hospital cover is often framed as a choice between paying an insurer and paying tax. That is too simple. The tax comparison can still be useful, but only after you establish the right income base, the right surcharge tier, whether the policy qualifies and how many days every relevant family member was covered.

This article builds that calculation without pretending tax is the only reason to buy insurance. The aim is to find the maximum net premium at which qualifying cover costs no more than the Medicare Levy Surcharge, then decide whether the policy itself is worth having.

Start with the 2026–27 threshold and tier

The Australian Government’s Medicare Levy Surcharge page sets the 2026–27 thresholds at A$105,000 for singles and A$210,000 for families. The family threshold rises by A$1,500 for each dependent child after the first.

The surcharge is additional to the ordinary Medicare levy. Crossing a threshold changes the applicable MLS rate, so a small income change near a tier boundary can change the tax-only value of cover. Do not use last year’s threshold or assume the rate is always 1%.

Taxable income is not always your MLS income

The threshold test uses income for MLS purposes, not merely the taxable-income line on a payslip or tax estimate. The ATO’s income-test guidance can add items such as reportable fringe benefits, reportable employer super contributions, deductible personal super contributions and net financial or rental property losses.

That creates two common surprises. Salary sacrifice to super can reduce taxable income while remaining relevant to the MLS income test. A negatively geared investment can reduce taxable income while its net loss is added back for the test. The reliable starting number is the ATO’s MLS-income calculation, not a rough gross-salary figure.

Keep that threshold figure separate from the amount used to calculate the surcharge. Under the ATO’s surcharge calculation guidance , the rate applies to taxable income, total reportable fringe benefits and any relevant amount on which family trust distribution tax has been paid. Reportable super contributions and net investment losses can lift the tier without being added again to this surcharge base.

For a couple, work out family tier eligibility and each adult’s surcharge base and exemptions rather than multiplying one combined salary mechanically. Individual low-income and prescribed-person exemptions can alter the result. The family examples below are deliberately labelled as household illustrations, not tax-return calculations.

The cheapest policy only helps if it qualifies

Avoiding MLS requires an appropriate level of private patient hospital cover from a registered Australian health insurer. Extras-only cover does not qualify. Neither travel insurance nor cover from an overseas fund substitutes for qualifying hospital cover.

The permitted annual excess is no more than A$750 for a single policy or A$1,500 for couples and families. A cheap product with a higher excess, or a product that only covers dental and optical services, may have value for other reasons but does not solve the MLS question.

Before comparing prices, confirm four fields in the policy information statement: it is hospital cover, the insurer is registered, the excess stays within the MLS limit, and the start date is correct. A low quote without those checks is not a valid side of the comparison.

The full-year break-even is a simple ceiling

For a full year without an exemption, the first-pass formula is:

Potential full-year MLS avoided = amount subject to MLS × applicable MLS rate

The result is the tax-only annual premium ceiling. If the net hospital premium is below that amount, qualifying cover is cheaper than the estimated surcharge before considering policy benefits. If it is above that amount, buying solely to avoid MLS costs more than paying the estimated surcharge.

These rows assume the threshold-test income equals the surcharge base, with no reportable-super or investment-loss add-backs and no exemptions. The family rows add both adults’ surcharge bases and assume both are liable at the displayed tier throughout the year. In an actual family calculation, determine each adult’s amount and exempt days separately, then add the results. Treat the rows as screening values, then use the ATO calculation for the tax return.

A contrasting fictional example shows why the distinction matters. A single person with A$120,000 taxable income and A$20,000 reportable super contributions has A$140,000 of income for the tier test. Assuming no other adjustments or exemptions, Tier 2 applies, but the surcharge base is A$120,000. The full-year estimate is A$120,000 × 1.25% = A$1,500, not A$1,750. Adding the super contribution again would overstate the tax-only premium ceiling by A$250.

Families need a whole-household cover check

Above the family threshold, qualifying cover generally needs to include you, your spouse and relevant dependants. Under the government guidance, dependants include children under 21 and full-time student children under 25. If one relevant family member is not covered, the household may still face the surcharge.

This is why comparing a single-only policy premium with a family MLS estimate is misleading. Put every relevant person on one line with their cover start and end dates. Confirm whether an older child still meets the MLS definition of a dependant rather than relying on how the insurer markets the family policy.

The family threshold rises by A$1,500 for each dependent child after the first. That adjustment changes the threshold but does not automatically prove that the policy covers the right people.

Part-year cover changes the break-even

Qualifying hospital cover for only part of the year gives a partial exemption. The surcharge remains for uncovered days. A practical estimate is:

Potential MLS avoided = amount subject to MLS × applicable MLS rate × otherwise-liable days made exempt by qualifying cover ÷ days in the income year

The 2026–27 income year has 365 days. Using the A$120,000 taxable-income plus A$20,000 reportable-super example above, the full-year estimate is A$1,500. If qualifying cover makes 181 otherwise-liable days exempt, the avoided amount is A$1,500 × 181 ÷ 365 = about A$743.84. A net premium of A$820 for those days costs about A$76.16 more than the tax avoided. Incorrectly using the A$140,000 tier-test figure would suggest a tax saving of about A$47.81 instead, reversing the comparison.

This estimate assumes unchanged family status, the same applicable rate and no other exemption during the period. If those conditions change, use the ATO’s applicable calculation rather than treating all policy days as newly exempt days.

Use the actual dates. A policy bought late in June does not erase the surcharge for earlier uncovered months. A suspended policy can also create uncovered days. Check the start date shown by the insurer and the number of eligible days in the tax return rather than rounding the year to “about half”.

Compare the net premium, not the sticker price

The private health insurance rebate is income- and age-tested. Lifetime Health Cover loading can push the premium in the other direction. The amount to compare with potential MLS is therefore the household’s net out-of-pocket hospital premium after the rebate and any loading, not an advertised pre-rebate price.

Keep the mechanisms separate on the worksheet:

1. Establish the tier-test income, then calculate potential MLS using the separate surcharge base, applicable rate and days made exempt.

2. Record the hospital-cover premium before rebate.

3. Subtract the rebate actually available to the household.

4. Add any Lifetime Health Cover loading and unavoidable policy fees.

5. Compare the resulting net premium with potential MLS.

Separating the lines prevents a rebate estimate from being counted twice. It also makes the calculation easy to update when premiums, income or rebate rates change.

Tax savings are not the whole value of hospital cover

A policy can be worth more or less than its tax saving. Hospital access, waiting periods, exclusions, restricted treatments, excesses and out-of-pocket medical costs affect its practical value. A policy that narrowly clears the MLS rules may still provide little cover for the treatment a household cares about. Conversely, a household below the MLS threshold may still choose hospital cover for access or risk-management reasons.

The decision also involves the value of keeping future choices open. Waiting periods can make it difficult to buy useful cover immediately after a diagnosis. That does not mean everyone should buy now; it means the tax-only calculation should not be mistaken for a complete insurance-needs assessment.

The strongest counter-signal to buying for tax reasons is a net premium well above the estimated MLS, particularly when the policy’s exclusions and excess leave little expected value. The strongest counter-signal to paying MLS instead is a net premium below the surcharge combined with hospital cover the household independently values.

Use the calculation as a decision screen

Build a tax-calculation row for each adult, recording income for the tier test, the separate surcharge base, family status, applicable rate and individual exemptions. Separately record every relevant adult’s and dependant’s qualifying-cover status, excess and coverage dates. Add the household’s gross premium, rebate, loading and net premium without counting one family premium twice. Keep the insurer’s current Private Health Information Statement next to the figures.

Then ask three questions in order. Does the policy qualify for every relevant person? Is its net premium below the MLS it would avoid for the covered days? Would the household still want the policy if the tax saving were zero?

That final question prevents a tax threshold from choosing an insurance product on your behalf. The useful conclusion may be “buy qualifying cover”, “pay MLS and keep the difference”, or “buy cover for health-risk reasons even though it does not win the tax comparison”. The calculation narrows the decision; it does not make personal tax or insurance advice unnecessary.

For a wider household-buffer framework, three buffers first-home buyers should not confuse separates home equity, accessible cash and superannuation. The same discipline applies here: tax savings and insurance protection solve different problems even when one product affects both.

Sources checked

• Australian Taxation Office — Paying the Medicare levy surcharge: calculation base

• Australian Taxation Office — MLS income, thresholds and rates

• Australian Government — Medicare Levy Surcharge

• Australian Taxation Office — Medicare levy surcharge

• Australian Taxation Office — Appropriate hospital cover

• Australian Government — Private Health Insurance Rebate

• Australian Government — Surcharges and incentives

This article provides general information and is not personal financial, tax, legal or insurance advice. MLS liability and insurance suitability depend on household income, dependants, exemptions, dates and current policy terms. Confirm the calculation with the ATO and read the current policy information statement before buying, changing or cancelling cover. The author or operator may hold insurance, superannuation or other financial interests discussed here. This article was not commissioned or sponsored by an insurer, adviser or comparison site and contains no affiliate or referral links. Automatically selected display advertising, if enabled, does not determine the editorial view.