<ul data-eligibleForWebStory="true">Contributing to superannuation can be tax-effective but exceeding limits can result in penalties.Concessional contributions include employer contributions, salary sacrifice payments, and personal deductible contributions.These contributions are taxed at 15% and have an annual cap of $27,500 per person.Exceeding the cap may lead to taxation at regular income tax rates and potential penalties.Unused cap amounts from previous years can be carried forward under certain conditions.Common mistakes include not tracking employer contributions, overcommitting to salary sacrifice, and not reviewing personal deductible contributions.Tips to stay within the cap include tracking contributions regularly, reviewing arrangements, and seeking advice if needed.Extra contributions to super can be beneficial with proper planning to avoid penalties.