"Trust" is the most important commodity Australia has to offer overseas consumers apart from minerals, a new assessment of growth opportunities has found.

Deloitte Access Economics, which identifies 25 growth opportunities for Australia, says a recurring theme is strong legal, financial and regulatory institutions.

Agribusiness, identified as one of the "next waves" of growth will benefit from growing demand from China and emerging economies for food they can trust to be safe.

"Australia has a marvellously undervalued asset to capitalise on," Access director Chris Richardson says in the report. "We are boring. Overseas buyers know that our food will be safer than the alternatives. The more incomes rise overseas, the more important safety becomes."

Australian financial services will become increasingly important overseas for the same reason. Our institutions are known to be well-managed and safe, and the nation's escape from the global financial crisis enhanced that reputation.

The legal system is also set to benefit from the knowledge that corruption and government interference are minimal.

Although tarnished of late, Australia's reputation as a good place for foreign students will also help.

Access says Australia's top five prospects after minerals are tourism, agribusiness, wealth management, international education and gas. Combined they have the potential to be as big as mining.

Most are strongest in the eastern states, with growth likely to move back towards NSW and Victoria as the WA-centred mining boom fades.

However Access expects mining to remain a driver of growth for the next two decades.

At home, Australia's fastest-growing industries will be residential aged care, financial services and low-carbon power generation.

"Servicing senior citizens will become more important than ever," Mr Richardson said. The average man alive in Australia today will live nine years older than his dad, the average woman seven years older than her mum."

Private schooling and health will also become more important as incomes climb.

Among potential growth areas Access identifies is storage of other nations' nuclear waste. It says Australia's geographical and political stability make it ideal for the task.