JOHANNESBURG, SOUTH AFRICAN President Jacob Zuma has stirred a hornet's nest with his sudden, populist pronouncement of free higher education for the poor in December, raising fears of chaos at universities now facing a barrage of applications from thousands of hopeful students who have just graduated from high school.

The South African government will likely have to foot most of the bill for the exercise, adding pressure on a national budget already straining at the seams and possibly pushing its sovereign credit rating further into junk territory.

Access to tertiary education remains an emotive issue in South Africa since the end of apartheid rule more than two decades ago, with children from mainly poor, black households struggling to access limited funding for tuition through programmes like the National Student Financial Aid Financial Aid Scheme.

In the wake of nationwide protests by university students demanding free education over the last couple of years, Zuma in December promised the government would extend fully subsidise free higher education to poor and working class students from 2018.

The presidency said the government would increase subsidies to universities from 0.68 per cent to 1.0 per cent of GDP over the next five years, but gave no details on the rollout.

The National Treasury has also been largely mum on the plan, save for a brief statement soon after Zuma's announcement, when it said it was reviewing the details of the higher education proposals, as well as possible financing options.

It said any amendment to existing spending and tax proposals would be announced in the main budget speech to Parliament in February.

If implemented, the free education proposal will add pressure on South Africa's budget, which is already saddled with a revenue shortfall of nearly 51 billion Rand (about 4.15 billion US dollars), economic analysts said.

It was reckless for the president to announce free education without really showing a financial that is step by step in terms of how it's going to be funded.

This also comes at a time when we've breached the fiscal ceiling that we set out. It is a very tight balancing act for the National Treasury and we have to ask ourselves, is it worth it?

The governing African National Congress (ANC) has little room to back out of the undertaking, however, with the radical leftist Economic Freedom Fighters (EFF) already urging prospective poor students who might have given university a miss to show up in person at campuses to apply for places.

This is in spite of universities warning that their enrollment plans and targets for 2018 are already in place, and their resources can only allow them to consider applications lodged online before the end of 2017.

Under the banner Universities South Africa, the institutions said in a statement this week they were concerned that Zuma's announcement came without an accompanying implementation strategy and roll-out timeline.

Other critics, including the main opposition party, the Democratic Alliance (DA), have condemned the free education promise as opportunism by Zuma to score points for his beleaguered ruling ANC in the face of an economic downturn blamed on its mismanagement.

Zuma's announcement was ostensibly made without consulting National Treasury or the Department of Higher Education and Training. It merely served as a tool of cheap politicking, aimed at scoring points in an attempt to salvage the legacy of his failed presidency, DA Higher Education Spokeswoman Belinda Bozzoli said.

The call by another opposition party, the Economic freedom Fighters (EFF) for walk-in registrations by students was also ill-considered as it contravened the universities' registration procedures and placed undue strain on their systems and resources, Bozzoli added.

Given the precedent for walk-in registration processes to turn violent, these calls place students' safety at risk, she said.

Business lobby groups have also expressed concern over the plan, with the Banking Association of South Africa calling it a way of fooling South Africans by adopting unaffordable populist policies in the name of the poor without the ability or even the political will to deliver.

The National Union of Metalworkers of South Africa, the biggest single trade union in South Africa with more than 300,000 members, has applauded Zuma's decree, but warned this week that the government must not divert funding from other social programmes to pay for free education.

We wish to remind Zuma that genuine free education does not mean shifting state resources from other pressing social needs in order to offer grants to a portion of working class and poor students, it said.

The sustainability of free education will come from resources obtained by the state from a combination of massive nationalization as well as by imposing a hefty tax on the rich.