A government co-contribution is a bonus payment from the federal government into your superannuation account – but it comes with conditions. First, the government will only make a co-contribution if you make a personal contribution. Second, the government will only contribute a maximum of $500. Third, the government will only make co-contributions for people on low and medium incomes. The Australian Taxation Office will calculation whether you’re entitled to a government co-contribution when you lodge your tax return. The size of any co-contribution depends on the size of your personal contribution and income.