This article provides general information only and does not constitute personal financial advice. It has been prepared without taking into account your objectives, financial situation or needs. Before acting on any information in this article, you should consider whether it is appropriate for you and seek advice from a licensed financial adviser if necessary.

Most Australians know their marginal tax rate, but two quiet adjustments reshape the final number on your tax bill: the Medicare levy and the low-income tax offset (LITO). The Medicare levy adds 2% to your taxable income, while LITO can subtract up to $700 from your tax payable. If you earn between $25,000 and $70,000, these two mechanisms often move your final bill by more than the base tax brackets suggest.

How the Medicare Levy Works

The Medicare levy is a 2% charge on your taxable income that helps fund Australia’s public health system (Australian Taxation Office, 2026). It sits alongside your ordinary income tax and is calculated separately, then added to your total tax payable.

The levy applies to most Australian residents for tax purposes, but it includes a low-income threshold to protect lower earners. For the 2025-26 income year, singles with taxable income below $26,000 pay no Medicare levy. Between $26,000 and $32,500, the levy phases in gradually. Above $32,500, the full 2% applies. Families and seniors have higher thresholds, adjusted for the number of dependent children and partner income.

If your income sits just above the threshold, the phase-in formula means you pay a fraction of the full levy, not the entire 2% overnight. This gradual ramp prevents a sudden jump in tax for earners near the cut-off.

How the Low-Income Tax Offset Works

The low-income tax offset (LITO) reduces the tax you owe after your income tax has been calculated. It is a non-refundable offset, meaning it can reduce your tax payable to zero but will not generate a refund beyond that (Australian Taxation Office, 2026).

For the 2025-26 year, LITO provides up to $700 in relief. The offset is automatic: if you lodge your tax return through myTax or a registered tax agent, the ATO applies it without requiring you to claim it separately.

The offset phases out in two stages. If your taxable income is $37,500 or less, you receive the full $700. Between $37,500 and $45,000, the offset reduces by 5 cents for every dollar over $37,500. From $45,000 to $66,667, it reduces by a further 1.5 cents per dollar. Once your income reaches $66,667, LITO drops to zero.

This structure means a person earning $40,000 receives a partial offset of around $575, while someone earning $50,000 receives around $300. The effect is most visible for low and middle-income earners, often offsetting the Medicare levy or reducing the overall tax burden by several hundred dollars.

As covered in foundational texts such as Principles of Economics 3e, targeted offsets and progressive thresholds are common tools governments use to adjust the effective tax burden on different income bands (OpenStax, 2022).

A Worked Example

Consider an Australian resident earning $45,000 in taxable income during the 2025-26 year, with no dependants and no private health insurance.

Step 1: Calculate ordinary income tax
Using the 2025-26 tax brackets:

  • $0 to $18,200: nil
  • $18,201 to $45,000: 16% on income over $18,200

Read also: Australian Income Tax Calculator: How to Work Out Your Take-Home Pay for 2024-2025

Tax on ordinary income = ($45,000 - $18,200) × 0.16 = $4,288

Step 2: Add the Medicare levy
Income is above $32,500, so the full 2% applies:
Medicare levy = $45,000 × 0.02 = $900

Step 3: Subtract LITO
Taxable income is exactly $45,000. The offset has already reduced from $700 to $325 by this point (phasing out 5 cents per dollar between $37,500 and $45,000).

LITO = $700 - (($45,000 - $37,500) × 0.05) = $325

Step 4: Final tax payable
Total tax = $4,288 + $900 - $325 = $4,863

Without understanding the Medicare levy and LITO, you might estimate tax payable at $4,288. The actual figure is $4,863, a difference of $575. The Medicare levy added $900, while LITO clawed back $325.

Now compare this to someone earning $30,000. Ordinary income tax on $30,000 is ($30,000 - $18,200) × 0.16 = $1,888. The Medicare levy phases in: at $30,000, the levy is around $200 (using the phase-in formula). LITO gives the full $700. Final tax payable is approximately $1,388. Here, LITO more than offsets the Medicare levy, delivering a net reduction.

Rates and Thresholds Change

The Medicare levy low-income threshold, LITO phase-out points, and tax brackets are indexed or adjusted by legislation. The figures above reflect rates published by the ATO as of August 2026. Always verify current thresholds at ato.gov.au before lodging your return or making financial decisions based on tax estimates (ASIC MoneySmart, 2026).

If you have dependants, hold a Commonwealth seniors health card, or earn foreign income, additional rules and thresholds apply. The ATO provides detailed worksheets and the myTax portal calculates these automatically when you lodge.

Understanding how the Medicare levy and LITO interact with your income gives you a clearer picture of your after-tax position and helps you plan contributions, deductions, and year-end decisions with confidence.