Contributions calculator - GESB

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Assumptions

Introduction

Our Contributions calculator is designed to help you work out how to make the most of your super contributions.

By entering how much you are willing to give up from your take-home pay, we’ll estimate the most effective way for you to make your super contributions, before and/or after tax.

Your details

What is your before-tax salary?

Please note that this calculator considers your taxable salary as the only source of income. Any other income you may receive, including negative gearing, has not been considered.

per

Fortnight Year

Which GESB account do you have?

GESB Super You probably have a GESB Super account if you joined GESB on or after 16 April 2007.
West State Super You probably have a West State Super account if you joined GESB before 16 April 2007 and after 28 September 1993.

If you also hold a Gold State Super account, contributions your employer makes to Gold State Super, known as 'notional employer contributions' count towards your concessional contributions cap when you also make concessional contributions to a taxed account, such as GESB Super.

How often would you like to make a contribution?

Fortnightly Monthly Yearly

How much are you willing to give up from your take-home pay each fortnight?

We'll then estimate the most effective way to make your contributions, before and/or after tax.

To give you some guidance, the table below shows the smallest, median and highest contributions of GESB members like you, based on your salary and whether you have a West State Super or GESB Super account.

Lowest fortnightly contribution	Median fortnightly contribution	Highest fortnightly contribution
Lowest fortnightly contribution $20	Median fortnightly contribution $100	Highest fortnightly contribution $200

Lowest monthly contribution	Median monthly contribution	Highest monthly contribution
Lowest monthly contribution $40	Median monthly contribution $120	Highest monthly contribution $800

Lowest yearly contribution	Median yearly contribution	Highest yearly contribution
Lowest yearly contribution $480	Median yearly contribution $1440	Highest yearly contribution $9600

ly amount

$XXX better
off per year

when you contribute:

$XXX less take-home pay
$XXX more in total super

$XXX better off per year

By reducing your take home pay by each , you are able to:

Salary sacrifice each ( % of your before-tax salary of )
Contribute after tax each ( % of your before-tax salary of )
Save in tax each year

Use our Retirement planning calculator to see the difference your contributions can make

Your contributions in detail

Your take-home pay

A break down of your take-home pay
Item	Amount
Your annual salary
Salary sacrifice
Tax	−
After-tax contribution

Take-home pay

Your super

A break down of your super
Item	Amount
11% super from employer
Salary sacrifice
Contribution tax	−
After-tax contribution
Co-contribution
Low income super tax offset

Total super

15% super tax deducted off employer super contribution

Total take-home pay plus total super

Your take-home pay

A break down of your take-home pay
Item	Amount
Your annual salary
Salary sacrifice	−
Tax	−
After-tax contribution	−

Take-home pay

Your super

A break down of your super
Item	Amount
11% super from employer
Salary sacrifice
Contribution tax	−
After-tax contribution
Co-contribution
Low income super tax offset

Total super

15% super tax deducted off employer super contribution

Total take-home pay plus total super

What is salary sacrificing?

What are after tax contributions?

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What is salary sacrifice?

Find out if you’re eligible for the Commonwealth Government Super Co-contribution

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Page last updated 16 July 2025

Disclaimer Assumptions

This calculator helps you to decide how to make contributions to your super, but you should consider seeking advice before making changes to your account

This calculator is provided to help you to decide how to make contributions to your super. The tool provides an estimate only, and does not constitute legal, taxation or personal financial advice. In providing this information, we have not taken into account your investment objectives, financial situation or needs. We are not licensed to provide financial product advice. Before acting or relying on any of the information in this calculator, you should consider this in conjunction with the relevant Product Information Booklet and disclosure documents, and consider whether the information is appropriate for you. You may also wish to consult a suitably qualified adviser to assist you.
This tool provides a calculation which is only based on the information you've provided. It is not a guarantee.
The results produced by this calculator are inappropriate for holders of defined benefit accounts such as Gold State Super. Contribution caps for GESB Super or West State Super, do not include contributions already made to your Gold State Super account. Therefore, you should not rely solely on these results.
We recommend you revisit this calculator on a regular basis as your circumstances, tax and other rules can change over time.
The calculations included in this tool are based on existing legislation and do not take into account any proposed legislative changes.
You currently work for the Western Australian state government.
For the purpose of this calculator, 'income' is your annual, monthly or fortnightly income from employment before tax, including any bonus payments and standard member contributions that are salary sacrificed. It excludes any employer super contributions and other packaged benefits. Any income you may have received from other sources has not been taken into account.
The calculator makes a number of assumptions. We recommend you read them carefully. If your actual situation differs from the assumptions made, then the results presented may differ from your actual situation.

Untaxed funds, such as West State Super, have unique features

Concessional contributions made to an untaxed scheme (like West State Super or Gold State Super), also count towards an individual's concessional contributions cap to a taxed scheme, but are not capped within those schemes. That is, the annual cap of a taxed scheme does not limit the amount you can make to an untaxed fund. However, as such contributions to an untaxed scheme count towards your annual tax scheme cap, they do limit your ability to make further concessional contributions to taxed super funds.
In an untaxed fund, such as West State Super, before-tax contributions and earnings may be taxed at 15% when the benefit is paid to the member or transferred to a taxed fund.

There are rules that apply to contributions

We assume that your employer contributes Superannuation Guarantee (SG) at 12% of the gross income amount entered only. No allowance has been made for the maximum superannuation contribution base ($62,500 per quarter for the 2025/26 financial year).You can adjust the SG amount in the assumptions section if your employer contributes a different amount.
The contributions are made within the same financial year.
No allowance has been made for spouse contributions.

Rules for before tax (salary sacrifice) contributions differ for GESB Super and West State Super

Concessional (before-tax) contributions (including employer SG, salary sacrifice and tax-deductible personal contributions) to a taxed fund, such as GESB Super, are capped at a maximum of $30,000 per year (2025/26 financial year).
If you've selected GESB Super, we adjust these contributions so you don't exceed the concessional contributions cap (which applies to the total of your employer and before tax contributions).
Members of untaxed schemes such as West State Super, are subject to a lifetime untaxed plan cap of $1.865 million per super fund for the 2025/26 financial year.
No allowance has been made for the bring-forward rule for people under 75 years old. For more details, see How much can you contribute.

Rules for after tax contributions are the same for GESB Super and West State Super

Non-concessional (after-tax) contributions are capped at $120,000 per year, a maximum of four times the maximum standard concessional contributions limit (currently $30,000). This is notwithstanding the 'bring-forward rule'.
Non-concessional contributions can only be made within the cap if your total super balance is less than $2.0 million on 30 June of the previous financial year. No allowance has been made for this cap.
We adjust these contributions so you don't exceed the annual non-concessional contributions cap.

The Commonwealth Government Co-contribution and Low Income Superannuation Tax Offset are included

The Commonwealth Government Super Co-contribution and low-income superannuation tax offset (LISTO) have been included in the calculation. Your eligibility for these payments is based on the information you entered into the calculator including your annual income, employer contributions, after-tax contributions and salary sacrifice contributions. Other eligibility criteria apply.
As contributions to your West State Super account don't get taxed, any before-tax contributions made into your account are not eligible for the LISTO contribution.
The Super Co-contribution rate is current from 1 July 2025.
We assume that you qualify for the Super Co-contribution if you meet the income threshold and you make after tax contributions.
It is assumed that the Super Co-contribution for any after-tax contributions made during the relevant year is paid at the end of that year.

Tax may apply to your super contributions

Where applicable an estimate of the Division 293 additional contribution tax for those on incomes over the relevant threshold has been included.
We assume that contributions made to super are limited to your applicable concessional and non-concessional contribution caps. No allowance has been made for contributions made over these contributions caps, or for any additional tax that may be payable on excess contributions as a result. No allowance has been made for any other tax on super.
We assume contributions made to West State Super are not subject to contributions tax. These contributions may be subject to tax upon accessing this money. No allowance for this tax has been taken into account in this calculator.
The tax assumptions used are general in nature only and do not constitute tax advice. Please see your tax adviser for advice that is specific to your individual circumstances.
We assume you have provided us with your tax file number.

The calculator applies tax on your current income as per personal income tax rates

The calculator works out the income tax payable on the current income you have entered by applying the current financial year's personal income tax rates (including the Low Income Tax Offset) and the Medicare Levy where it applies based on the individual thresholds. The actual Medicare Levy may be different than calculated for members of couples. Any other form of income you receive has not been taken into account. No allowance has been made for the Medicare Levy Surcharge.
You are assumed to be an Australian resident for tax purposes.
No allowance has been made for taxes (including tax that applies to the payment of super and retirement income benefits) with the exception of personal income tax and contributions tax. If any of these other taxes apply, the calculator's results will be incorrect.

We provide you examples of what other members contribute

The calculator shows the lowest, median and highest regular contributions of GESB members like you, based on your salary and whether you have a West State Super or GESB Super account. It does not include lump sum contributions. The lowest contribution is the lowest amount contributed by members like you in the last financial year. The median contribution is the middle value that is contributed by members like you. The highest contribution is the highest amount contributed by members like you in the last financial year.

Privacy

We use statistical, aggregated data relating to our calculator users for analytical purposes. Aggregated data includes anonymous data derived from the calculator information and does not identify any individual. Subject to applicable laws and regulations, we use this information to understand our customers and to develop and improve our services. We may provide this aggregated data to third parties as described in our privacy policy.