Salary Sacrifice Into Super: Beginner's Guide 2026

The 60-Second Answer

Salary sacrifice means asking your employer to send part of your pre-tax pay straight into your super fund instead of your bank account. In 2025–26, that money is taxed at just 15% inside the fund — versus your marginal rate, which for most full-time Australians is 30% or 37% plus the 2% Medicare levy.

The trade-offs: the money is locked away until retirement, and every sacrificed dollar counts toward your $30,000-a-year concessional contributions cap — which already includes your employer's compulsory 12% super guarantee. Set it up right and it's one of the simplest legal tax savings available to Aussie workers.

What Salary Sacrifice Into Super Actually Is

Salary sacrifice is a voluntary agreement between you and your employer: you accept a lower take-home salary, and your employer pays the difference into your super fund. It happens before income tax is calculated.

Three facts beginners usually miss:

• It must be set up prospectively. You can only sacrifice salary for work you haven't done yet — backdating it to cover last month's pay doesn't work.
• It's taxed at 15% in the fund. When the sacrificed amount reaches your super fund, the fund pays 15% contributions tax on it. If you earn over $250,000, an extra Division 293 tax of 15% applies — still below the top 47% marginal rate.
• Your super guarantee is protected. Since January 2020, employers must calculate the 12% super guarantee on your pre-sacrifice salary. They can't shrink your compulsory super because you chose to sacrifice.

If you're new to super in the first place, read our beginner's guide to superannuation first — salary sacrifice makes more sense once you know what the super guarantee and concessional contributions are.

The Tax Math: Where the Saving Actually Comes From

The saving is the gap between your marginal tax rate and the 15% contributions tax. Earn $95,000 and your marginal rate is 30% plus the 2% Medicare levy — 32% on each extra dollar — versus 15% inside super.

What happens to $5,000	Taken as salary	Salary sacrificed
Tax paid	$1,600 (32%)	$750 (15%)
What you keep	$3,400 in your pocket	$4,250 in your super
Extra benefit	—	$850 more working for your retirement

The higher your income, the bigger the saving: at a 30% marginal rate (plus 2% Medicare levy), sacrificing $1,000 saves about $170; at 37% it's about $240; at the top 45% rate, about $320.

And compounding does the heavy lifting from there. An extra $5,000 a year into super (after the 15% tax, so $4,250 net) from age 30 to 65, at an illustrative 6% average annual return, grows to roughly $475,000 — illustration only, since real returns vary and are never guaranteed. To see why starting early matters so much, read our explainer on how compound interest turns small savings into big money.

The $30,000 Cap: The Only Limit That Really Matters

For 2025–26, the concessional (before-tax) contributions cap is $30,000 per person, per year — one bucket covering your employer's 12% super guarantee, your salary sacrifice, and any personal contributions you claim as a tax deduction. (It's legislated to rise to $32,500 from 1 July 2026.)

Example: you earn $100,000, so your employer's 12% super guarantee is $12,000 — leaving $18,000 of cap room for salary sacrifice.

Go over the cap and the excess is added back to your assessable income and taxed at your marginal rate — plus an excess concessional contributions charge. The tax advantage evaporates, and you pay extra for the privilege.

The carry-forward bonus

If your total super balance was under $500,000 on 30 June last year, you can use unused cap amounts from up to five prior years. Years of part-time work, study, or parental leave may have left you tens of thousands in unused cap room — a powerful catch-up tool. Your myGov account (linked to the ATO) shows your available amounts.

How to Set Up Salary Sacrifice in 4 Steps

Step 1 — Check your employer allows it. Most medium and large employers do. Ask payroll or check your enterprise agreement — there's no law forcing employers to offer it.

Step 2 — Calculate your cap room. Take $30,000, subtract your employer's annual super guarantee (12% of your salary), and subtract any personal contributions you'll claim as a deduction. Leave a small buffer — pay rises, bonuses and overtime count too.

Step 3 — Get the agreement in writing, before you earn it. The arrangement must cover future pay, not pay already earned. Put the amount and start date in an email or form with payroll, and confirm your super guarantee will still be calculated on your full pre-sacrifice salary.

Step 4 — Check your payslips and fund statements. Salary sacrifice should appear as an employer contribution on your payslip and in your super fund's transaction history. Review it at least once a year — especially after a pay rise, which lifts your super guarantee and shrinks your remaining cap room.

Salary Sacrifice vs Personal Contributions: Which Is Better?

There's a second way to get before-tax money into super: make a personal contribution from your after-tax pay and claim a tax deduction for it at tax time (via a notice of intent form from your fund). The tax outcome is very similar — both count as concessional contributions taxed at 15%.

So why would anyone choose salary sacrifice?

• Cashflow is smoother. Salary sacrifice spreads the contribution across every pay, instead of one lump sum at tax time.
• The saving is automatic. No deduction to remember, no notice of intent form to file.
• Some people prefer lump sums. A bonus, a tax refund, or savings in the bank can go in as a personal contribution whenever you like — no payroll arrangement needed.

Many Aussies do both: salary sacrifice a fixed amount each pay, then top up with a personal contribution near 30 June if cap room remains. Either way, track the total against the $30,000 cap.

The 5 Mistakes That Cost Aussies Real Money

1. Blowing the $30,000 cap. Add up your super guarantee, salary sacrifice, and deductible personal contributions — if the total tops $30,000, the excess loses the tax benefit and attracts extra charges. Track it through the year, not in June.

2. Not checking your super guarantee. The law says SG must be on your pre-sacrifice salary, but payroll errors happen. If your SG looks like 12% of your reduced salary, raise it immediately — that shortfall compounds for decades.

3. Sacrificing on a low income. If your marginal rate is 16% or less (roughly, income under $45,000), the 15% contributions tax barely saves you anything. Salary sacrifice adds little for low earners.

4. Forgetting the money is locked away. Super is generally preserved until you reach preservation age and retire. Don't sacrifice money you might need for a house deposit or an emergency.

5. Trying to backdate it. Salary sacrifice only covers future earnings. If the agreement starts next pay, it starts next pay — anything already earned is already taxed as salary.

FAQ: Salary Sacrificing Into Super

Does my employer have to offer salary sacrifice?
No. If yours doesn't, you can get a similar outcome by making personal contributions and claiming a tax deduction.

How much salary can I sacrifice?
As much as your employer agrees to — but your combined concessional contributions should stay within the $30,000 cap for 2025–26.

Will salary sacrifice reduce my super guarantee?
It shouldn't — since January 2020, SG must be calculated on your salary before the sacrificed amount. Verify it on your payslip.

Can I stop or change the amount?
Yes. Notify payroll and the change takes effect from a future pay — never a past one.

When can I access the sacrificed money?
Like all super, it's generally preserved until you reach preservation age and meet a condition of release (usually retirement).

Disclaimer: This article is for educational pur poses only and is not financial advice. Super and tax rules are complex and change over time — consider speaking with a licensed financial adviser or tax professional about your situation.