Environment minister Mangaliso Ndlovu moved against what he called "climate washing" in May, saying the government would take 50% of carbon project revenue, with 20% on top of that going to communities, in a move that surprised global markets.
The government said at the time that carbon credit projects were largely unregulated and needed to be registered with authorities within two months.
The global $2bn voluntary carbon offset market involves companies buying credits from emission-reducing projects such as renewable energy or tree planting to offset their own emissions.
"All existing carbon credit projects deemed null and void shall be given 60 days... to comply with the provisions," the new regulations document said.
"From the eleventh year of the project, the share of proceeds shall be renegotiated taking into account the prevailing circumstances," it said.
The government did not immediately comment on the latest regulations.
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