Is salary sacrifice into super worth it? Worked examples at four incomes

Salary sacrifice into super saves tax when your effective marginal rate, including the 2% Medicare levy, is higher than the 15% contributions tax the fund pays on the contribution. In 2026–27 that is true for almost everyone with taxable income above $45,000, where the marginal rate is 32% or more: each $1,000 sacrificed typically puts $850 into super while reducing take-home pay by about $680 or less. Below $45,000 the gain is small, and below roughly $23,000 it can be negative. The cost is access: the money is preserved until you retire or meet another condition of release.

This guide works through the numbers at four income levels using the salary sacrifice calculator, then covers the side effects people miss. It builds on the step-by-step tax guide. All figures are illustrative and use 2026–27 resident rates. It is general information, not financial advice.

How the arrangement works

You agree in writing with your employer, before you earn the salary, that part of your future pre-tax pay will be paid into super instead.
Your taxable salary falls by that amount, so PAYG withholding falls too.
The fund receives the contribution and deducts 15% contributions tax (30% if Division 293 applies).
The amount counts toward your concessional cap of $32,500 for 2026–27, together with your employer's 12% super guarantee.

Since 1 January 2020, employers must calculate super guarantee on your salary before sacrifice, so sacrificing should not reduce your employer's compulsory contribution.

Worked examples: sacrificing $5,000 a year

Taxable income before sacrifice	Effective marginal rate (2026–27)	Tax and levy saved	Fall in take-home pay	Added to super after 15%	Net gain
$44,000	22% (15% + 2% levy + 5% LITO withdrawal)	$1,100	$3,900	$4,250	$350
$60,000	33.5% (30% + 2% + 1.5% LITO withdrawal)	$1,675	$3,325	$4,250	$925
$85,000	32%	$1,600	$3,400	$4,250	$850
$150,000	39%	$1,950	$3,050	$4,250	$1,200

How a row is calculated, using $85,000: tax saved = $5,000 × 32% = $1,600. Take-home falls by $5,000 − $1,600 = $3,400. Super receives $5,000 − 15% = $4,250. Net gain = $4,250 − $3,400 = $850.

Two points stand out. At $60,000 the saving is larger than at $85,000, because the low income tax offset is being withdrawn in that band. At $44,000 the gain is modest and the person may need the cash more. For incomes where the sacrifice crosses a bracket boundary (for example from $47,000 down to $42,000), split the amount and apply each rate to its part.

Checking the cap

Illustrative example at $150,000: super guarantee at 12% = $18,000. Adding $5,000 of salary sacrifice gives $23,000, under the $32,500 cap, leaving $9,500 of room. Someone on $250,000 receiving super guarantee on the full salary would already be at $30,000 before any sacrifice; the employer may cap contributions at the maximum contribution base, so check your payslip.

If your total super balance was under $500,000 on 30 June 2026, you may also have carry-forward cap amounts. Going over the cap is costly in paperwork; see exceeding super caps.

Side effects to check

Area	Effect of salary sacrifice
HELP repayment	No reduction: reportable super contributions are added back to repayment income
Medicare levy surcharge	No reduction: added back to income for MLS purposes
Medicare levy	Reduced, because it is based on taxable income
Centrelink, Family Tax Benefit, child support	Reportable super contributions are usually counted as income for these tests
Leave loading, overtime, bonuses	Depends on your agreement; some employers calculate them on the reduced salary
Home loan applications	Lenders may look at the lower take-home pay
Insurance in super	More money in the fund can cover premiums, but premiums reduce retirement savings

Salary sacrifice or a personal deductible contribution?

You can get the same tax result by contributing from your bank account and claiming a deduction, provided you lodge a notice of intent with your fund and receive its acknowledgment before you lodge your return.

	Salary sacrifice	Personal deductible contribution
Cash flow	Tax saving arrives with every pay	Tax saving arrives at tax time
Flexibility	Must be set up in advance with the employer	Decide late in the year, e.g. in June
Paperwork	Agreement with employer	Notice of intent and acknowledgment
Risk of losing the deduction	Low	High if the notice is late or the money is rolled over first
Available if employer doesn't offer it	No	Yes

When salary sacrifice may not suit you

You need the money within the next few years (for a home deposit, unless you use the First Home Super Saver scheme, which has its own limits of $15,000 a year and $50,000 in total).
Your taxable income is low enough that the 15% contributions tax is close to your marginal rate. The low income super tax offset may refund some contributions tax for incomes up to $37,000 (legislated to rise to $45,000, with a higher maximum, from 2027–28).
You are close to the concessional cap or already caught by Division 293, which reduces the benefit.

FAQ

Is salary sacrifice the same as a voluntary contribution?

It is a voluntary contribution made from pre-tax pay. After-tax voluntary contributions you do not claim are non-concessional and do not reduce your tax.

Can I change or stop the arrangement?

Usually yes, prospectively, by giving your employer notice. Check your agreement and payroll cut-off dates.

Does salary sacrifice reduce my HELP repayment?

No. The sacrificed amount is reportable and is added back to repayment income.

Can I salary sacrifice other things?

Some employers allow novated car leases, laptops or other benefits, which have their own fringe benefits tax rules. This guide covers super only.

Sources

Australian Taxation Office — salary sacrifice arrangements, concessional contributions cap, notice of intent, First Home Super Saver scheme
Moneysmart — ASIC guidance on salary sacrificing super
Fair Work Ombudsman — pay and payslip rules