Salary sacrifice vs personal deductible contributions: same tax, different plumbing

Two roads to the same concessional contribution. The tax outcome is identical: the differences are timing, control, and one piece of paperwork that voids the whole thing if you get it wrong.

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Since 2017, anyone eligible to contribute can claim a tax deduction for personal super contributions: you no longer need salary sacrifice to get pre-tax money into super. That leaves two routes to the same destination:

Either way the amount comes off your taxable income, is taxed at 15% inside the fund, uses the same $32,500 concessional cap alongside your employer's 12% super guarantee, and counts as reportable super contributions for income tests. On a $95,000 salary, putting $10,000 in by either route saves about $3,200 of income tax and Medicare levy, costs $1,500 of contributions tax in the fund, and leaves you about $1,700 ahead, identically. Model your own numbers with the salary sacrifice calculator; the result applies to both routes.

Where they differ

Salary sacrificePersonal deductible
Set up viaAgreement with your employer / payrollYourself: BPAY/transfer to fund + notice of intent
TimingProspective only, future pay, spread across the yearAny time before 30 June, including one lump sum
Cash-flow effectSmaller net pay each cycle; tax saving is immediateYou pay from savings now, get the tax back at assessment
Paperwork riskLow, payroll handles reportingReal, deduction lost without a valid, acknowledged notice of intent
Employer required?Yes, and not all employers offer itNo, works for any employee or self-employed person

The notice of intent

The personal route's flexibility comes with the one hard rule. Before you claim the deduction you must give your fund a notice of intent to claim or vary a deduction (ATO form NAT 71121, or your fund's own version) and receive the fund's written acknowledgment. The notice must reach the fund by the earlier of:

And it must still be valid when it arrives. The ATO's rules:

Practical order of operations: contribute → send the notice → wait for the acknowledgment → then lodge your return. If you're planning any rollover or fund switch, lodge the notice first.

Choosing between them

Whichever route: watch the cap. Employer contributions eat into the $32,500 first, unused cap from up to five earlier years may add headroom, and going over means extra tax: the concessional cap guide covers the arithmetic, and above $250,000 of income Division 293 takes a second bite either way.

Frequently asked questions

Can I claim a deduction for my salary-sacrificed contributions?

No. Sacrificed amounts are employer contributions and are already pre-tax, claiming a deduction on top isn't allowed. You also can't claim deductions for super guarantee contributions, rollovers, downsizer contributions or FHSS recontributions.

Sources

Figures on this page come from the following primary sources. The date is when we last checked the page against the source.

Related

Salary sacrifice calculator: the take-home and net-super effect of any contribution amount. Concessional cap 2026-27: headroom, carry-forward and excess contributions. Division 293 tax: the extra 15% above $250,000.

Figures current as at 25 August 2026. Rules verified against the ATO's personal super contributions guidance; see our methodology. General information only, not financial advice.