Super Contribution Optimiser
Calculate tax savings from salary sacrifice and personal super contributions against the concessional cap.
11.5% for 2024-25, 12% from 1 July 2025
Additional pre-tax amount to sacrifice into super
After-tax contributions you claim a tax deduction for
Carry-forward unused cap from last 5 years (if total super < $500k)
Your marginal tax rate determines the tax benefit
How It Works
Calculates total concessional contributions (employer SG + salary sacrifice + personal deductible) and checks against the $30,000 cap plus any carried-forward amounts. Shows the tax saved by comparing marginal tax on the contributed amount versus the 15% super tax rate.
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Frequently Asked Questions
What is the concessional contributions cap?
The concessional (pre-tax) cap is $30,000 per year for 2024-25. This includes employer SG, salary sacrifice, and personal deductible contributions. Exceeding the cap means the excess is taxed at your marginal rate plus an interest charge.
What is the carry-forward rule?
If your total super balance is under $500,000 at 30 June of the previous year, you can use unused concessional cap amounts from the past 5 years. This is useful for making large catch-up contributions.
How much tax do I save with salary sacrifice?
Concessional contributions are taxed at 15% in the fund (or 30% if your income exceeds $250,000). If your marginal rate is 32.5%, sacrificing $10,000 saves you $1,750 in tax ($10,000 x (32.5% - 15%)).
What is the non-concessional cap?
The non-concessional (after-tax) cap is $120,000 per year for 2024-25. If you're under 75, you can bring forward up to 3 years ($360,000) in one year. This is separate from the concessional cap.
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