The Finance Algorithm
§ Tool · tier 1 · independent

Salary Sacrifice Optimizer.

See how much tax you can save by sacrificing salary into superannuation.

CalculatorFree, no signupOn-deviceupd May 2026
Inputs
Your numbers
$
$120k

Your gross annual salary

$
$5k

Concessional cap is $30k including SG. Don't sacrifice more than you can afford

$
$50k

Used to check carry-forward eligibility (<$500k)

Math updates live as you change inputs · AI runs on submit

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Move the sliders or type in the form on the left — the math updates live as you go. Click Get AI verdict when you want a written analysis.

Salary sacrificing into super is one of the most effective ways to reduce your tax bill while boosting your retirement savings. By contributing from your pre-tax income, you pay 15% tax on the contribution instead of your marginal tax rate (which could be up to 45% + Medicare levy).

§ Worked examples

Real-world scenarios

Middle Income Earner

Alex earns $90,000 and sacrifices $5,000.

Alex pays 32.5% tax + 2% Medicare levy (34.5%) on income, but only 15% on super. Saving: 19.5% on $5,000 = ~$975 tax saved.

High Income Earner

Sam earns $190,000 and sacrifices $10,000.

Sam pays 45% tax + 2% Medicare levy (47%) on top income. Inside super, tax is 15%. Saving: 32% on $10,000 = $3,200 tax saved.

§ FAQ

Questions Australians ask

§ Glossary

Plain-English definitions

Marginal Tax Rate
The tax rate you pay on your highest dollar of income.
Division 293 Tax
An extra 15% tax on super contributions for individuals with combined income and super contributions over $250,000.
Carry-forward rules
Allows you to use unused concessional cap amounts from the previous 5 years if your super balance is under $500,000.