Your contributions to your super for your home deposit get taxed differently depending on how you make the contribution:
- Salary sacrifice contributions (before-tax) get taxed at 15% when you contribute them to your super account.
- Voluntary contributions from your take-home pay (after-tax) have already been taxed, so they don't get taxed again when you contribute them to super.
When the ATO sends you your super saver money, they charge tax on your before-tax contributions and deemed earnings at your marginal tax rate, less a 30% offset. (If the ATO can't estimate your expected marginal tax rate, they charge tax of 17% instead.)
No extra tax is charged on your after-tax contributions.
The ATO will send you a payment summary showing how much tax you paid. You need to include this amount, and the amount you received from them, in your annual tax return for the year you request your money.