Australia's Superannuation Guarantee (SG) rate has reached its legislated endpoint of 12 per cent of ordinary time earnings. This is a significant milestone in Australia's retirement savings system — the SG has risen from 9 per cent in 2013 through a series of legislated increments, with each step generating debate about the trade-off between future retirement income and current take-home pay.
The Retirement Income Impact
The increase in the SG rate from 9.5 per cent (where it sat for many years) to 12 per cent will materially improve retirement outcomes for workers who spend their entire career under the higher rate. A 30-year-old earning $80,000 today can expect approximately $85,000 more in retirement savings at age 67 from the SG increase alone, assuming a 7 per cent annual return. This is not trivial — it represents a meaningful improvement in Australia's retirement income adequacy compared with the counterfactual of staying at 9.5 per cent.
The Take-Home Pay Question
The central economic debate around SG increases is whether they come at the expense of take-home pay. If employers treat super as a cost of labour, increases in the SG should — in theory — reduce wages growth by an equivalent amount. The empirical evidence on this is mixed: some studies find near-complete substitution; others find a much weaker relationship. The lived experience of workers through the SG increase period has generally been that wages continued to grow, suggesting the impact on take-home pay has been limited in a tight labour market.
The Tax Concession Question
Superannuation contributions and fund earnings are taxed at concessional rates — 15 per cent for contributions and accumulation earnings, compared with marginal income tax rates that reach 47 per cent for high earners. These concessions cost the federal budget approximately $55 billion per year. The distribution of these concessions is heavily skewed toward high-income earners, who benefit most from the flat 15 per cent rate. Reforming superannuation tax concessions — particularly for very large balances — has become a recurring policy debate, with the government's 30 per cent tax on balances above $3 million a recent, contested step in this direction.
