Research forecasts a 12.5% average annual growth in household wealth.
Inequality of income in South Africa and the number of people living in poverty have been reduced significantly since 2005.
South African household expenditure increased 24.6% between 2005/2006 and 2010/2011, Stats South Africa said.
Our high household debt-to-income ratio means that price increases across the board could keep us in a position of financial vulnerability.
Spending in South Africa's economy increased in the first quarter of 2010, the central bank said on Thursday in its June quarterly bulletin.
South Africa's household spending grew by an annualised 1,4% in the fourth quarter of 2009.
SA's household spending fell again in the third quarter of 2009, although the rate of decline slowed as the economy exited recession.