Superannuation is one of those things most Australians know they have, but very few actually understand. It sits there in the background, slowly growing, and you might check it once a year when you get your annual statement. But here is the thing — super is almost certainly the biggest pool of money you will ever build outside of your home. And the decisions you make about it now can mean the difference between a comfortable retirement and one where you are scraping by.
So let us break it all down in plain English. How super works, what goes in, what the limits are, and how you can use the tax system to your advantage.
How Does Super Actually Work?
At its simplest, super is a long-term savings system that the government forces your employer to contribute to on your behalf. The idea is that by the time you retire, you have built up enough money to fund your own lifestyle without relying entirely on the Age Pension.
As of 2025-26, your employer must pay a minimum of 12% of your ordinary time earnings into a super fund. This is called the Superannuation Guarantee (SG). So if you earn $80,000 a year, your employer must put at least $9,600 into your super on top of your salary.
This money goes into your chosen super fund (or a default fund if you have not chosen one), where it gets invested in a mix of shares, property, bonds, and other assets. Over decades, the compounding returns can turn relatively modest contributions into a very large nest egg. You can see how your super is tracking using our superannuation calculator.
Types of Contributions
There are two main types of super contributions, and they are taxed very differently.
Concessional contributions are contributions made from pre-tax money. This includes your employer's SG payments, any salary sacrifice arrangements you have, and any personal contributions you claim a tax deduction for. These contributions are taxed at just 15% when they go into your super fund. For most people, that is a lot less than their marginal tax rate, which makes super one of the most tax-effective places to put your money.
Non-concessional contributions are contributions made from after-tax money. This is money you have already paid income tax on and then choose to put into super voluntarily. These are not taxed again when they go in, but the investment earnings on them are taxed at the concessional rate inside the fund.
Contribution Caps — Know Your Limits
The government puts limits on how much you can contribute to super each year. For 2025-26, the caps are:
- Concessional contributions cap: $30,000 per year
- Non-concessional contributions cap: $120,000 per year
The concessional cap of $30,000 includes everything — your employer's SG, any salary sacrifice, and any personal deductible contributions. So if your employer puts in $12,000 through the SG, you have $18,000 of headroom left for additional concessional contributions.
If you go over these caps, you will pay extra tax. Excess concessional contributions get added to your taxable income and taxed at your marginal rate (though you do get a 15% offset for the tax already paid inside the fund). Excess non-concessional contributions attract a hefty 47% tax. So it is really important to keep track of what is going in.
Carry-Forward Unused Cap Amounts
Here is a really handy rule that a lot of people do not know about. If you have not used your full $30,000 concessional cap in previous years, you can carry forward the unused amounts for up to five years. This means if you had a couple of lower-income years where your employer only contributed $10,000, you might have tens of thousands of dollars in unused cap space that you can use now.
To be eligible, your total super balance must be below $500,000 at 30 June of the previous financial year. If you qualify, this is a powerful way to make a large concessional contribution in a high-earning year and significantly reduce your tax bill. Our salary calculator can help you understand your current tax position so you can plan effectively.
Salary Sacrifice — The Simplest Way to Boost Your Super
Salary sacrifice is an arrangement where you ask your employer to put some of your pre-tax salary directly into your super fund instead of paying it to you as cash. Because this money goes in before income tax is taken out, you only pay 15% tax on it (inside super) instead of your full marginal rate.
For example, if you earn $90,000 and salary sacrifice $10,000 into super, your taxable income drops to $80,000. You pay less income tax, and the $10,000 only gets taxed at 15% inside your super fund. The net effect is that you end up with more money in total — it just sits in super instead of your bank account.
The trade-off, of course, is that you cannot access that money until you reach your preservation age (generally between 55 and 60, depending on when you were born). So you need to balance your current living needs with your long-term savings goals.
The Government Co-Contribution
If you are a lower-income earner (total income of $45,400 or less for 2025-26), the government will actually match your non-concessional super contributions dollar for dollar, up to a maximum of $500. Your income must be below $60,400 to receive any co-contribution at all, and you must earn at least 10% of your income from employment or self-employment.
This is essentially free money. If you earn $40,000 and put $1,000 of after-tax money into your super, the government will add another $500. There is no application process — the ATO works it out automatically when you lodge your tax return.
Spouse Contributions and Tax Offsets
If your spouse earns less than $40,000 a year, you can make contributions to their super fund and claim a tax offset of up to $540. The maximum offset applies when you contribute $3,000 and your spouse earns $37,000 or less. This is a great strategy for couples where one partner works part-time or is taking time off to care for children.
When Can You Access Your Super?
Generally, you cannot touch your super until you reach your preservation age and retire. The preservation age ranges from 55 to 60 depending on your date of birth — for anyone born after 1 July 1964, it is 60.
There are some limited exceptions, such as severe financial hardship, compassionate grounds, terminal illness, or if your balance is very small and you have permanently left the country. But these are strict criteria and should not be relied upon as a normal way to access your money.
Once you do reach retirement, you can draw down your super as a lump sum, convert it into an income stream (called an account-based pension), or a combination of both. If you are nearing retirement and want to estimate how long your super might last, our super drawdown calculator can give you a clear picture.
Check Your Super Health
Here are a few things worth doing right now:
- Consolidate your accounts. If you have worked multiple jobs, you might have super scattered across several funds. Multiple accounts mean multiple sets of fees eating into your balance. You can find and combine lost super through the ATO's myGov portal.
- Check your insurance. Most super funds include life insurance and income protection. Make sure the cover is right for your needs — you might be paying for more than you need, or less than you should have.
- Review your investment option. Many people sit on the default "balanced" option for their entire working life. Depending on your age and risk tolerance, a different option might deliver better long-term returns.
- Use the calculators. Our superannuation calculator shows you projected balances at retirement based on your current contributions, and our employer cost calculator shows exactly how much your employer is paying on your behalf.
The Bottom Line
Super is not exciting. It is not something most people want to spend their weekend thinking about. But even small decisions — like salary sacrificing an extra $50 a week, consolidating your accounts, or choosing a better investment option — can add up to tens of thousands of dollars over a working career. The tax benefits alone make super one of the smartest places to grow your wealth. Take twenty minutes to check your super, run the numbers, and make sure you are getting the most out of it.