How to Use a Superannuation Calculator: A Complete Guide for Australians
Learn how to use a superannuation calculator accurately. Understand which inputs matter most, how to account for the 12% SGC rate, fees and salary sacrifice in your projection.
How to Use a Superannuation Calculator Accurately
A superannuation calculator is one of the most powerful financial planning tools available to Australians. But the output is only as good as the inputs. Entering unrealistic assumptions gives you a misleading picture of your retirement balance.
This guide walks you through each input in the Dolaro Superannuation Calculator and explains what to enter and why.
Your Current Super Balance
Check your current balance in your super fund's app or member portal, or log into MyGov and navigate to the ATO's Super section. Use the most recent figure.
Tip: If you have multiple super funds, consolidate them first (via MyGov) before running your projection. Multiple accounts mean multiple sets of fees eating into your balance.
Your Age and Retirement Age
Enter your current age (not birthday — just current age). For retirement age, the default is 67, which is the current Age Pension eligibility age in Australia. However, your personal preservation age (the minimum age you can access super) is 60 if you were born after 30 June 1964.
You might retire at 60, 65 or 70 — the calculator lets you test different scenarios.
Employer Contribution Rate (SGC)
From 1 July 2025, the Superannuation Guarantee rate is 12% — and this is the final scheduled rate. It won't increase further. Enter 12% unless your employer contributes more (some enterprise agreements provide 12.5% or 15%).
The calculator automatically deducts 15% contributions tax from employer contributions before crediting them to your account.
Salary Sacrifice
Salary sacrifice is the most powerful lever available to employed Australians to grow their super faster. When you salary sacrifice, the contribution is taxed at 15% instead of your marginal income tax rate.
If you're in the 30% bracket, salary sacrificing $5,000/year saves you $750 in tax per year while contributing an extra $4,250 (after 15% contributions tax) to your super.
The combined total of employer SGC + salary sacrifice is capped at $30,000/year (concessional cap, FY 2025–26). The calculator warns you if your inputs exceed this cap.
Expected Annual Return (Gross)
This is the most impactful — and most uncertain — input. Enter the gross return (before fees) from your super fund's investment option.
Rough benchmarks for Australian super fund investment options:
| Option | Historical gross return (approx) |
|---|---|
| Cash | 3–4% |
| Conservative | 4–6% |
| Balanced | 6–8% |
| Growth | 7–9% |
| High Growth / Shares | 8–10% |
Past performance doesn't guarantee future returns. A balanced fund at 7% gross is a reasonable default assumption for long-term planning.
Annual Fund Fee
Enter your super fund's total annual fee as a percentage of your balance. Check your annual member statement or your fund's fee disclosure.
Industry (profit-to-member) super funds typically charge 0.4–0.8% per year. Retail super funds often charge 1–2% or more.
A 1% fee difference on a $200,000 balance costs $2,000 per year — more than $100,000 over a 35-year career due to compounding.
Reading Your Results
The calculator shows:
- Projected balance at retirement — the headline number
- Stacked bar chart — shows what proportion is starting balance, contributions and growth
- Total contributions (after 15% tax) — how much went in net of contributions tax
- Total investment growth — compounded returns over the projection period
- Total fees — the drag from annual fund fees
- Year-by-year table — expand to see your balance grow at each age
Common Mistakes to Avoid
Using an unrealistically high return: Assuming 10% gross return sounds great — but may be unrealistic for a balanced fund. Conservative projections are more useful.
Forgetting fees: A 0% fee projection assumes you're in a super fund with no fees. Real fees matter significantly over long periods.
Not including salary sacrifice: If you're making salary sacrifice contributions but don't enter them, your projection will be too low.
Using pre-tax salary sacrifice in the contributions field: Enter salary sacrifice as a before-tax amount — the calculator applies the 15% contributions tax automatically.
The Dolaro Superannuation Calculator is general information only. For personalised super advice, consult a licensed financial adviser.