Sources

Your exact tax saving + the 30-year super-balance impact

Stage 3 marginal rates, $30k concessional cap tracking, Division 293 flag for high earners, and compound projection — all in 30 seconds.

Your Situation
$
Salary excluding employer super contributions
$
Amount redirected from pre-tax pay into super each year
For retirement projection
Preservation age is 60
Concessional cap status (FY25-26)
$30,000 cap includes employer SGC + your sacrifice
Employer SGC (12% of $120,000) $14,400
Your sacrifice $10,000
Total concessional $24,400
Remaining cap room $5,600
Annual tax saving
$3,200
at your 30% marginal rate · 32c saved per $1 sacrificed
Tax saving breakdown
Income tax saved +$3,000
Medicare levy saved (2%) +$200
Gross tax saving +$3,200
15% contributions tax (inside super) −$1,500
Net tax benefit per year +$1,700
Take-home pay impact
Without sacrifice
$93,838
With sacrifice
$86,838
Reduction
−$7,000
You sacrifice $10,000 from pre-tax pay but your take-home only drops $7,000 — the other $3,000 was tax you would have paid anyway.
Compound super impact over 25 years at 7% real return (inflation-adjusted)
Net super added per year +$8,500
Compounded retirement balance gain +$540,000
That's real spending power at retirement, not nominal dollars. The 15% contributions tax inside super beats your marginal income tax rate every dollar you sacrifice — and the gap compounds annually.

Salary sacrifice tax saving by income (FY25-26)

How much each $1 of salary sacrifice saves at common income bands. The saving = marginal rate + 2% Medicare − 15% contributions tax.

Annual Income Marginal Rate Saved per $1 Sacrificed Saving on $10k Sacrifice
$40,00016%3c$300
$80,00030%17c$1,700
$120,00030%17c$1,700
$150,00037%24c$2,400
$200,00045%32c$3,200
$260,000 (Div 293)45%17c$1,700

The $260k row shows Division 293 effect — for incomes above $250k, the contributions tax doubles from 15% to 30%, halving the effective per-dollar saving. Sacrifice can still be worth it for the long-term compounding inside super.

How the calculator works

What this calculator includes
  • ATO Stage 3 marginal income tax brackets (16% / 30% / 37% / 45% at $45k / $135k / $190k — in force since 1 July 2024)
  • 2% Medicare levy saving on the sacrificed amount (above $33,658 income)
  • 15% contributions tax inside super
  • Division 293 — extra 15% contributions tax for income + concessional > $250,000
  • Concessional cap tracking ($30,000 for FY25-26, $32,500 from 1 July 2026)
  • SGC at 12% — final legislated rate since 1 July 2025 (no further increase scheduled)
  • 30-year compound projection using future-value-of-annuity formula at 7% real return

Salary Sacrifice FAQ

How much tax do you save with salary sacrifice into super?

The tax saving equals the difference between your marginal rate (plus 2% Medicare levy) and the 15% contributions tax inside super, applied to the sacrificed amount. Under Stage 3 brackets: at the 30% marginal rate ($45k-$135k income), each $1 sacrificed saves 17c (30% + 2% − 15% = 17c). At the 37% rate ($135k-$190k): 24c per $1. At the 45% rate ($190k+): 32c per $1. At the 16% rate ($18.2k-$45k): only 3c per $1 — salary sacrifice rarely pays off in the lowest bracket.

What is the concessional contributions cap for 2025-26?

The concessional (pre-tax) contributions cap is $30,000 per financial year for 2025-26. This includes your employer's Super Guarantee contributions (12% of OTE), salary sacrifice, and any personal deductible contributions. On a $145,000 salary the employer SGC alone is $17,400, leaving $12,600 of cap headroom for salary sacrifice before excess contributions tax applies. The cap rises to $32,500 from 1 July 2026.

What is Division 293 and when does it apply?

Division 293 is an extra 15% contributions tax that applies if your income plus concessional contributions exceeds $250,000. The 15% applies only to the portion above $250,000 (or your concessional contributions, whichever is lower). At a $260,000 salary with $20,000 sacrifice, Division 293 adds 15% × $20,000 = $3,000 in extra tax, reducing the effective saving. The calculator flags this automatically and includes it in the verdict.

Does salary sacrifice reduce my HECS or Medicare Levy Surcharge?

Not automatically. Salary sacrificed super is reported as Reportable Employer Super Contributions (RESC) and added back into your income for HECS-HELP repayment income, MLS income test, and child support income test. Salary sacrifice DOES reduce your assessable income for income tax purposes — so you save tax — but it does NOT reduce your HECS bracket or move you below the MLS threshold of $101,000 (singles). The Velofy MLS calculator and HECS repayment calculator account for this correctly.

Can I use unused concessional cap from previous years?

Yes, if your total super balance was below $500,000 on 30 June of the previous year, you can carry forward unused concessional cap from up to five prior financial years. For example, if you only used $20,000 of the $27,500 cap in 2022-23 ($7,500 unused), you can add that headroom to the current year's cap on top of the standard $30,000. Check your unused cap via myGov → ATO → Super → Concessional contributions.

What is the difference between salary sacrifice and personal deductible super contributions?

Salary sacrifice is arranged with your employer before pay is earned. Personal deductible contributions are made from after-tax money (you pay then claim a deduction at tax time via Section 290-170 notice to your fund). The tax outcome is identical, but personal deductible contributions: (1) don't require employer cooperation, (2) don't count toward RESC for income-tested measures like HECS or Family Tax Benefit, and (3) require lodging a notice with your super fund before claiming. For HECS-affected employees, personal deductible contributions often beat salary sacrifice.