Johannesburgers may soon be required to make up-front cash payments for municipal services instead of paying in arrears as currently.
The city is battling to recover almost R19-billion it says it is owed by residents and businesses. About R14-billion of the debt is considered irrecoverable.
This is a national problem.
In November, Cooperative Governance and Traditional Affairs Minister Lechesa Tsenoli told parliament that residents owed the country's 278 municipalities about R87-billion.
During an extraordinary meeting of parliament's finance portfolio committee on Friday, the DA in Johannesburg proposed requiring payment of rates, and charges for other services, upfront in cash.
This would involve the installation of prepaid water and electricity meters for all households and businesses in the metro.
John Mendelsohn, a DA member of the city council's finance committee, said the proposal was still in a preliminary phase but plans were afoot to present it to the Municipal Public Accounts Committee next month.
But committee chairman Boyce Gcabashe was less enthusiastic, saying there was "nothing extraordinary" about the proposal.
"The proposal is premature but we are not discounting it. We will deal with it in the Municipal Public Accounts Committee meeting," he said.
"We have debt that we can chase and debt that we cannot. That debt must be written off."
According to the city's annual report, by June 30 last year residents owed R18.966-billion - R7-billion for water, R5.4-billion for electricity, R5.3-billion for rates, R805-million for refuse removal and R341.6-million for rent.
Mendelsohn conceded that the proposal would be "hugely unpopular" but said it was necessary.