The Medicare levy and the Medicare levy surcharge

The Medicare levy is a charge on taxable income that helps fund Medicare. It is levied on most Australian resident taxpayers as part of the annual income tax assessment. It is not optional, it is not affected by whether you hold private health insurance, and it is not reduced by using private hospitals. Buying insurance does not get you out of it.

The Medicare levy surcharge is a separate, additional charge. It applies only to people whose income for surcharge purposes exceeds a threshold and who did not hold an appropriate level of private hospital cover for themselves and their dependants. Its entire purpose is to push higher earners into the private system to relieve pressure on public hospitals, and it is designed so that a compliant policy typically costs about the same as the surcharge would.

Lifetime Health Cover is not administered by the tax system at all. It is a rule that requires insurers to charge a loading on hospital premiums for people who first take out cover after a certain age, adding a set percentage for each year of delay, up to a maximum. The loading is removed after a continuous period of holding cover. It exists to discourage people from waiting until they are old and expensive before joining.

The private health insurance rebate is a government contribution towards your premium. It is income-tested with tiers, and it can be taken either as a reduced premium paid directly to your insurer or as a tax offset when you lodge. It reduces the cost of the insurance, not the levy or the surcharge.

So the mental model is: the levy is what you pay for Medicare; the surcharge is what higher earners pay for not being privately insured; the loading is what insurers charge you for joining late; and the rebate is what the government pays towards your premium. Only the second one is avoidable by buying a policy.

The levy applies to taxable income, and the rate is set in legislation. It is withheld through PAYG along with income tax if you are an employee, which is why most people never see it as a separate transaction — it appears as a line on the notice of assessment.

There is a low-income reduction. Below a threshold you pay nothing; between that threshold and a higher one you pay a reduced amount that phases in. The thresholds are indexed and there are separate figures for singles, families, seniors and pensioners, plus an increase per dependent child. These change each financial year, so the only sensible source is the ATO's current-year page.

There are also full and half exemptions. The main categories are people who are not entitled to Medicare benefits — which includes many temporary visa holders from countries without a reciprocal health care agreement — certain foreign residents, and members of some defined categories such as some Australian Defence Force personnel and people entitled to full free medical treatment for all conditions.

If you are claiming an exemption because you were not entitled to Medicare, you generally need a Medicare Entitlement Statement from Services Australia covering the relevant period. Without it the ATO will not allow the exemption, and applying takes time, so start early rather than at lodgement.

One point that surprises people: holding a temporary visa does not automatically exempt you. If you are covered by a reciprocal health care agreement, or you have applied for permanent residency and hold interim Medicare eligibility, you may be entitled to Medicare benefits and therefore liable for the levy even though you do not think of yourself as a Medicare user.

The levy also has a surcharge-free counterpart people forget: it is charged on taxable income, so deductions that reduce your taxable income reduce your levy as well. That is not true of the surcharge, which is calculated on a broader income measure.

Start with the income figure, and note that it is not your taxable income. Income for Medicare levy surcharge purposes is a broader measure that adds back several things: reportable fringe benefits, reportable employer superannuation contributions such as salary sacrifice, net investment losses including negatively geared property, and certain exempt foreign employment income. People who have arranged their affairs to reduce taxable income are routinely surprised to find the surcharge still applies.

Next, identify which threshold applies to you. There is a singles threshold and a family threshold, and the family threshold increases for each dependent child after the first. Whether you count as a family depends on your circumstances on the last day of the income year — being in a couple, having dependants, or being a single parent all change the test. Thresholds are set annually and are published by the ATO.

If you are in a couple, the test is applied to your combined income against the family threshold, and both of you must hold appropriate cover. A common and expensive mistake is one partner holding a policy and the other not: the uninsured partner is liable, and in some circumstances both are.

Then check the cover. It must be private patient hospital cover with a registered health insurer, and the policy excess must not exceed the maximum permitted for surcharge exemption purposes. Extras or general treatment cover — dental, optical, physiotherapy — does not exempt you no matter how comprehensive it is. Overseas travel insurance and overseas visitor health cover generally do not count either, though there are limited exceptions worth confirming.

Finally, count the days. The surcharge is worked out for the number of days in the income year on which you did not hold appropriate cover. A gap of two months costs you two months of surcharge, pro-rated, not a full year and not nothing. This is where lapsed policies, delayed transfers between insurers and periods overseas cause trouble.

Your insurer sends the ATO a statement of the days you were covered, and that data pre-fills your return. If it is wrong, get the insurer to correct it at source rather than overriding it in your return, because the ATO reconciles against the insurer's data.

The system is deliberately calibrated so that a basic hospital policy costs roughly what the surcharge costs at the lower thresholds. That means for many people the financial comparison is close to a wash, and the decision turns on non-financial factors.

The arithmetic that matters is straightforward. Work out the surcharge you would pay at your income level for a full year. Then get the actual annual premium of the cheapest compliant hospital policy available to you, after the rebate you are entitled to, in your state — premiums vary by state and by insurer. Compare the two numbers directly.

Where people go wrong is buying a policy in the middle of a financial year to 'avoid the surcharge' and then paying both: the surcharge for the uninsured portion of the year plus the premium for the insured portion. If your income clearly exceeds the threshold, the cheapest outcome is to hold cover for the whole year, not to react in May.

The second common error is treating the policy as pure tax arbitrage and buying something with an excess so high and an exclusion list so long that it would be useless in an actual admission. That is a legitimate choice — many people buy exactly this — but be clear-eyed that you have bought a tax outcome, not health cover. Basic-tier policies are permitted to exclude significant categories of treatment.

The third is forgetting Lifetime Health Cover. If you are past the age at which the loading starts, the premium you are quoted may include a loading that grows for each year you delay. That changes the comparison permanently, not just for one year, and it is the strongest argument for deciding this before your early thirties rather than after.

The loading works off a base date tied to your age. If you do not hold hospital cover with a registered Australian insurer by the 1 July following your 31st birthday, a loading is added to your hospital premium for each year you were without cover after that point, up to a capped maximum.

Once you hold cover, the loading is charged on top of your hospital premium. After a continuous period of holding hospital cover — a number of years set by the rules — the loading is removed and your premium drops to the unloaded rate.

There are permitted breaks. You can be without cover for a limited cumulative period across your life without it counting, which is designed to accommodate short gaps when switching insurers or between jobs. There are also specific exemptions and adjusted base dates for people who were overseas for extended periods, for recent migrants, and for people covered under certain Australian Defence Force arrangements.

Recent migrants get a base date related to their arrival rather than their 31st birthday, which is the single most useful thing for a new arrival in their late thirties to know. If you are in that position, take out cover within the allowed window after registering for Medicare and you avoid a loading that would otherwise be substantial.

The loading is not affected by the rebate in the way the base premium is — the government rebate does not apply to the loading component. That widens the gap between a loaded and an unloaded premium beyond the headline percentage.

The Australian Government's privatehealth.gov.au site is the neutral place to check your position; it is run by the Department of Health rather than by an insurer or a comparison site earning commission.

Both the levy and the surcharge are calculated by the ATO when you lodge and appear on your notice of assessment. You do not pay them separately during the year — if you are an employee, PAYG withholding is meant to have covered them, though the surcharge is a frequent cause of an unexpected bill because withholding is based on salary and the surcharge income test is broader.

Your return pre-fills with the private health insurance information your insurer reported: the days covered, the premiums paid and the rebate received. Check it against your own statement. If it is missing or wrong, contact the insurer, because the ATO's copy comes from them.

If you claimed too much rebate during the year — usually because your income turned out higher than the tier you nominated — the difference is recovered through your assessment. This is not a penalty; it is the reconciliation working as designed, but it does mean a rebate tier chosen optimistically produces a bill later.

If you believe an exemption was wrongly refused, the path is the ATO's normal objection process, and for exemptions based on Medicare entitlement the evidence you need is the Medicare Entitlement Statement from Services Australia.

For complaints about the insurance itself — a policy that did not cover what you were told it would, a waiting period applied wrongly, a loading calculated incorrectly — the Private Health Insurance Ombudsman function sits within the Commonwealth Ombudsman and is free to use. That is the right avenue for disputes with an insurer, as distinct from disputes with the ATO.