For the 2025–26 financial year, the concessional contributions cap is $30,000 per person. Concessional contributions include employer superannuation guarantee payments, salary sacrifice contributions, and personal contributions for which you claim a tax deduction. These contributions are taxed at a flat 15% inside the fund, which is generally lower than most individuals’ marginal tax rate.
If you exceed the cap, the excess amount is included in your assessable income and taxed at your marginal tax rate, with a 15% offset to account for the tax already paid by the fund. You may also face an excess concessional contributions charge. The ATO will notify you if you have exceeded the cap, and in most cases you have the option to withdraw the excess from your super.