Tier 1 Medicare Levy Surcharge: Complete Guide for Australian Workers [FY 2025-26]
Are you earning between $97,001 and $113,000 as a single person in Australia? If so, you might be subject to the Tier 1 Medicare Levy Surcharge—an extra tax that could cost you over $1,000 per year if you don't have private hospital cover. Understanding how this surcharge works, what income thresholds apply, and how to avoid it can save you significant money on your annual tax bill. In this comprehensive guide, we'll break down everything you need to know about the Tier 1 Medicare Levy Surcharge for the 2025-26 financial year, including real calculations, avoidance strategies, and expert tips from certified accountants.
What Is the Tier 1 Medicare Levy Surcharge?
The Tier 1 Medicare Levy Surcharge is the lowest rate of an additional tax that applies to higher-income Australians who don't hold private hospital insurance. Set at 1.0% of your total taxable income, this surcharge kicks in when your earnings exceed $97,000 for singles or $194,000 for families and couples. It's the first of three tiers, with rates increasing to 1.25% and 1.5% as your income rises further.
Many Australians confuse the Medicare Levy Surcharge with the standard Medicare Levy, but they're distinctly different. The standard Medicare Levy is a universal 2% charge that nearly all taxpayers pay to support Australia's public healthcare system. The Tier 1 Medicare Levy Surcharge, however, is specifically designed to encourage higher-income earners to take out private hospital cover, thereby reducing pressure on the public system.
When you fall into Tier 1, you'll pay an additional 1% of your entire income as tax—on top of the regular Medicare Levy and your standard income tax rates. For someone earning $100,000, that's an extra $1,000 disappearing from your annual budget. The good news? This surcharge is completely avoidable with the right health insurance strategy.
How Tier 1 Medicare Levy Surcharge Works in Australia
The Australian Taxation Office (ATO) calculates your Tier 1 Medicare Levy Surcharge liability based on your income for Medicare Levy Surcharge purposes—a specific definition that includes more than just your taxable income. This calculation incorporates your taxable income, reportable fringe benefits, total net investment losses, and reportable super contributions. Understanding what counts toward this income is crucial for accurate tax planning.
If you're close to the Tier 1 threshold, certain financial decisions could push you over the edge. For example, salary sacrificing into superannuation contributions doesn't reduce your MLS income—reportable employer super contributions are added back. Similarly, investment losses that reduce your taxable income are added back for MLS calculations. This means strategies that normally lower your tax bill won't help you avoid the surcharge.
The surcharge applies for the full financial year unless you hold appropriate private hospital cover. If you take out hospital insurance partway through the year, you'll only be exempt from the surcharge for the days you were actually covered. This prorated calculation means timing matters—taking out cover in March won't help you avoid the surcharge for income earned from July through February.
Tier 1 Medicare Levy Surcharge Thresholds for FY 2025-26
The income thresholds for the Tier 1 Medicare Levy Surcharge remain consistent for the 2025-26 financial year. These thresholds are indexed periodically based on average weekly ordinary time earnings, but have stayed at current levels since 2023-24. Here's the complete breakdown of where Tier 1 fits within the broader Medicare Levy Surcharge structure:
| Tier Level | Single Income Range | Family Income Range | Surcharge Rate |
|---|---|---|---|
| Below Threshold | $97,000 or less | $194,000 or less | 0% |
| Tier 1 | $97,001 – $113,000 | $194,001 – $226,000 | 1.0% |
| Tier 2 | $113,001 – $151,000 | $226,001 – $302,000 | 1.25% |
| Tier 3 | $151,001 and above | $302,001 and above | 1.5% |
Note: Tax rates are subject to change. Always verify with ATO.gov.au. The family income threshold increases by $1,500 for each MLS dependent child after the first.
For families and couples, your combined income determines which tier applies. If you have dependent children, the threshold increases by $1,500 for each child after the first. This means a family with two children would have a Tier 1 threshold starting at $195,500 instead of $194,000. Understanding these adjustments is essential for accurate tax planning, especially for growing families with variable income.
Crossing from $97,000 to $97,001 might seem minor, but it triggers the full 1% surcharge on your entire income—not just the dollar amount over the threshold. This creates a significant tax jump for those earning just above the threshold, making it particularly important to understand your exact position and options for avoiding the surcharge.
How to Calculate Your Tier 1 Medicare Levy Surcharge
Calculating your Tier 1 Medicare Levy Surcharge liability is straightforward once you understand the formula. The ATO applies the 1.0% rate to your total income for MLS purposes, which means every dollar in this tier costs you an extra cent in tax if you don't have hospital cover. Here's how to work out exactly what you might owe:
Step 1: Calculate your income for MLS purposes by adding:
- Your taxable income
- Reportable fringe benefits
- Total net investment losses
- Reportable super contributions
Step 2: Check if your income falls within the Tier 1 range ($97,001–$113,000 for singles, $194,001–$226,000 for families).
Step 3: Multiply your total income by 1.0% to determine your surcharge liability.
Here are some real-world examples for the 2025-26 financial year:
Single earning $100,000: $100,000 × 1.0% = $1,000 MLS
Single earning $105,000: $105,000 × 1.0% = $1,050 MLS
Family earning $200,000: $200,000 × 1.0% = $2,000 MLS
To see how this affects your overall financial position, use our take-home pay calculator to get a complete breakdown of your after-tax income, including all levies and surcharges. This helps you understand the true impact of the Tier 1 Medicare Levy Surcharge on your budget.
If you're also repaying HECS-HELP debt, remember that your repayment income includes the same add-backs as MLS calculations. This means high-income earners with student debt often face multiple layers of income-tested obligations, making comprehensive tax planning even more important.
How to Avoid Paying the Tier 1 Medicare Levy Surcharge
The most effective way to avoid the Tier 1 Medicare Levy Surcharge is to maintain appropriate private hospital cover throughout the entire financial year. But not just any health insurance will do—the ATO has specific requirements about what qualifies as hospital cover for MLS exemption purposes.
To be exempt from the Tier 1 Medicare Levy Surcharge, your hospital cover must:
- Be provided by a registered Australian health insurer
- Cover hospital treatment (not just extras like dental or optical)
- Have an excess of $750 or less for singles, or $1,500 or less for families/couples
Many Australians mistakenly believe that extras-only policies exempt them from the surcharge—they don't. You need genuine hospital cover. Additionally, if your policy has a high excess above the thresholds mentioned, it won't protect you from the MLS even if it covers hospital treatment.
Before rushing to buy hospital cover, compare the cost of premiums against your surcharge liability. For many people in Tier 1, basic hospital cover costs less than the 1% surcharge they'd otherwise pay. For example, if you earn $105,000 and face a $1,050 surcharge, a basic hospital policy costing $900 annually would save you $150 while giving you private healthcare access. However, factor in the salary sacrifice implications and any Lifetime Health Cover loading if you're over 31.
If you're approaching the end of the financial year and discover you're subject to the surcharge, it's too late to avoid it for the current year—you needed cover from July 1. However, taking out hospital cover now protects you for the upcoming financial year and prevents future liability.
Frequently Asked Questions
What income level triggers Tier 1 Medicare Levy Surcharge?
For the 2025-26 financial year, Tier 1 Medicare Levy Surcharge applies to singles earning between $97,001 and $113,000, and families/couples with combined incomes between $194,001 and $226,000. If your income falls within these ranges and you don't have appropriate private hospital cover, you'll pay an additional 1.0% of your total income as tax.
Does salary sacrifice reduce my Tier 1 Medicare Levy Surcharge?
No, salary sacrificing into superannuation does not reduce your income for Medicare Levy Surcharge purposes. The ATO adds back reportable employer super contributions when calculating your MLS income. This means strategies that normally reduce your taxable income won't help you avoid or reduce the surcharge. Your MLS income is typically higher than your taxable income due to these add-backs.
How much does Tier 1 Medicare Levy Surcharge cost?
The Tier 1 Medicare Levy Surcharge costs 1.0% of your total income for MLS purposes. For example, if you earn $100,000, you'll pay $1,000 in additional tax. If you earn $110,000, you'll pay $1,100. This is on top of your standard Medicare Levy (2%) and regular income tax. Use our calculator to see your complete tax breakdown including all levies and surcharges.
Can I avoid Tier 1 Medicare Levy Surcharge by getting private health insurance?
Yes, maintaining appropriate private hospital cover for the entire financial year exempts you from the Tier 1 Medicare Levy Surcharge. Your policy must include hospital cover (not just extras) and have an excess of $750 or less for singles, or $1,500 or less for families. For many Tier 1 earners, the cost of basic hospital insurance is actually less than the surcharge they'd otherwise pay.
What happens if my income changes during the year?
The Medicare Levy Surcharge is calculated based on your actual annual income when you lodge your tax return. If your income increases mid-year and pushes you into Tier 1, you'll be liable for the surcharge for the entire financial year unless you had hospital cover from July 1. Similarly, if your income drops, you might avoid the surcharge even if you were earning more earlier in the year.
Conclusion
Understanding the Tier 1 Medicare Levy Surcharge is essential for any Australian earning between $97,001 and $113,000 (or families earning $194,001–$226,000). This 1.0% additional tax can add over $1,000 to your annual tax bill, but it's completely avoidable with appropriate private hospital cover. For many higher-income earners, taking out basic hospital insurance is not just a way to avoid the surcharge—it's often cheaper than paying the extra tax while providing valuable healthcare benefits.
As you plan your finances for the 2025-26 financial year, take time to calculate your income for MLS purposes and determine whether you're approaching the Tier 1 threshold. If you're earning near $97,000 as a single or $194,000 as a family, even small income increases could trigger the surcharge. Getting a quote for hospital cover now could save you hundreds of dollars and give you peace of mind.
Ready to see exactly how the Tier 1 Medicare Levy Surcharge affects your take-home pay? Use our comprehensive take-home pay calculator to get a personalized breakdown of your tax position, or explore our Medicare levy explained guide for more information about Australia's healthcare funding system. With the right knowledge and planning, you can minimize your tax burden while making informed decisions about your health coverage.
Disclaimer: This article is for informational purposes only and does not constitute professional tax advice. Tax rates and thresholds are subject to change. Always verify current information with ATO.gov.au or consult a registered tax agent for advice specific to your situation.