Work and Income

Salary Sacrifice Explained: The Tax Hack Hiding in Your Paycheck

Salary sacrifice lets you pay less tax and build wealth faster, but most Australians do not use it. Here is how it works and when it is worth it.

Published by NoBS Finance · 20 July 2026 · 7 min read

Key Takeaways

Salary sacrifice redirects pre-tax salary into super, where it is taxed at 15% instead of your marginal rate.
The tax benefit is largest for people earning above $45,000, where the marginal rate is 30% or higher.
The concessional contributions cap is $30,000 for 2025-26, rising to $32,500 from 1 July 2026. This includes your employer's Super Guarantee contributions.
Money in super is generally locked away until retirement, so do not sacrifice cash you might need soon.
Salary sacrifice contributions count as reportable super contributions, which can increase your HELP repayment income if you have a student debt.

What Is Salary Sacrifice?

Salary sacrifice means agreeing with your employer to redirect part of your pre-tax salary into superannuation. Because the money goes in before income tax is applied, you pay less income tax on that portion. The trade-off is simple: you give up take-home pay now to build your super balance for retirement.

How It Works

The money that goes into super via salary sacrifice is called a concessional contribution. It gets taxed at 15% inside the super fund (the contributions tax) instead of your marginal income tax rate. For most people earning above $45,000, that is a meaningful difference.

Here are the individual income tax rates that apply for the 2025-26 financial year (1 July 2025 to 30 June 2026). These do not include the 2% Medicare levy.

Taxable income	Rate
$0 to $18,200	Nil
$18,201 to $45,000	16 cents per $1 over $18,200
$45,001 to $135,000	$4,020 plus 30 cents per $1 over $45,000
$135,001 to $190,000	$31,020 plus 37 cents per $1 over $135,000
$190,001 and over	$51,370 plus 45 cents per $1 over $190,000

From 1 July 2026 (the 2026-27 financial year), the 16% rate drops to 15%. The rest of the brackets stay the same.

Hypothetical Example: $100,000 Income in 2025-26

Hypothetical example: Say you earn $100,000 in the 2025-26 financial year and you salary sacrifice $10,000 into super. The 2% Medicare levy is not included in this calculation to keep it simple. Individual circumstances can affect the result.

Without salary sacrifice:

Your taxable income is $100,000
Income tax: $4,020 + (30 cents x $55,000) = $4,020 + $16,500 = $20,520
You pay tax at a 30% marginal rate on income between $45,001 and $135,000

With salary sacrifice:

Your taxable income drops to $90,000
Income tax: $4,020 + (30 cents x $45,000) = $4,020 + $13,500 = $17,520
The $10,000 goes into your super fund, taxed at 15% contributions tax = $1,500
Total tax on that $10,000: $1,500 (inside super) instead of $3,000 (at your 30% marginal rate)
The difference is $1,500 in tax not paid on that portion

That $1,500 stays in your super fund and compounds over time. It is not guaranteed personal savings because investment returns vary and super is locked away until retirement. But the tax advantage is real and measurable.

When It Makes Sense

Salary sacrifice works best when:

You earn above $45,000, where the marginal rate is 30% or higher. The gap between 30% and the 15% contributions tax is where the benefit comes from.
You do not need the cash flow right now. Once money goes into super, you generally cannot access it until you meet a condition of release, usually retirement.
You are more than a few years from retirement age. The longer the money compounds inside super at the concessional 15% tax rate, the more the strategy pays off.
You have already cleared high-interest debt like credit cards or personal loans. Paying 20% interest on a debt while locking money away in super does not make sense.
You have an emergency fund already built. Locking money into super without a cash buffer for unexpected costs is risky.

When It Does Not

It does not make sense when:

You earn under $45,000. The tax saving is minimal because your marginal rate is 16%, which is close to the 15% contributions tax inside super.
You might need the money soon. You cannot access super until you meet a condition of release. If you are saving for a house deposit, consider the First Home Super Saver Scheme instead, which allows you to withdraw voluntary contributions for a first home.
You have not built an emergency fund yet. Locking money in super while carrying a credit card balance is backwards.
You have a HECS-HELP debt. Salary sacrifice contributions count as reportable super contributions, which increase your repayment income and could trigger higher compulsory HELP repayments.

The Caps

There are limits on how much you can put in at the concessional tax rate. For the 2025-26 financial year, the concessional contributions cap is $30,000 per year. From 1 July 2026, it increases to $32,500.

This cap includes your employer's Super Guarantee contributions. The Super Guarantee rate is currently 12%, so on a $100,000 salary your employer contributes $12,000. That leaves $18,000 of room for salary sacrifice before you hit the $30,000 cap in 2025-26.

Exceeding the cap means paying your marginal rate on the excess, which undoes the benefit. You can carry forward unused cap space from previous years if your super balance was under $500,000 on 1 July of the previous year, but that requires planning ahead.

Hypothetical Example: Sarah, 35, Earns $85,000

Hypothetical example: Sarah is 35 and earns $85,000 in the 2025-26 financial year. Her employer contributes $10,200 in Super Guarantee (12% of $85,000). She salary sacrifices $15,000 per year. The 2% Medicare levy is not included in this calculation. Individual circumstances can affect the result.

Without salary sacrifice:

Taxable income: $85,000
Income tax: $4,020 + (30 cents x $40,000) = $4,020 + $12,000 = $16,020

With salary sacrifice:

Taxable income drops to $70,000
Income tax: $4,020 + (30 cents x $25,000) = $4,020 + $7,500 = $11,520
Income tax saved: $16,020 minus $11,520 = $4,500
Contributions tax inside super: $15,000 x 15% = $2,250
Net tax benefit: $4,500 minus $2,250 = $2,250 less tax paid
Her super balance grows by $12,750 (the $15,000 minus $2,250 contributions tax)

Over 30 years at a 7% average return, that extra $12,750 per year could grow to roughly $1.2 million. This is a hypothetical example for illustration only. Actual returns will vary and past performance is not a guarantee of future results.

How to Set It Up

Check your super balance and current contributions on myGov
Calculate how much room you have under the $30,000 cap (or $32,500 from 1 July 2026). Subtract your employer's Super Guarantee from the cap to find your remaining room.
Ask your employer's HR or payroll for a salary sacrifice form
Start small. $200 per fortnight is $5,200 per year, well under the cap
Review annually, especially if your income changes or you switch jobs
Check whether salary sacrifice will affect your HELP repayments if you have a student debt

The Catch

Salary sacrifice is one of the most effective tax strategies available to everyday Australians, but it is not for everyone. The money is locked away. The benefit depends on your marginal rate. And if you have a HECS-HELP debt, the extra reportable super contributions could increase your compulsory repayments. Run the numbers for your situation, not someone else's. You can use our HECS Repayment Calculator to see how salary sacrifice contributions affect your repayment income.