Professor Jannie Rossouw of the Fiscal Cliff Study Group told the Standing Committee on Finance on Wednesday that if departments could limit expenditure on their ministries to R4.4m - as Treasury does - it could save the fiscus R1bn.
He said the study group was interrogating this further.
According to data from Treasury which was compiled by the group, the expenditure on ministries, Cabinet services and Constituency support for Parliament will amount to over R1.59bn.
Rossouw said these monies largely go towards the "entourage" of the minister – the minister, the deputy minister, personal staff and cars, among other things.
In the 2019/20 fiscal year, more than R130m will be spent on the ministry of the department of defence and military veterans alone.
See the full list - and who the biggest spenders are - below.
- Parliament (constituency support) – R345.6m
- Defence and Military Veterans – R137.7m
- The Presidency (Cabinet services) – R67.4m
- Police – R65.1m
- Human settlements – R55.6m
- Agriculture, forestry and fisheries – R48.6m
- Water and sanitation – R46.6m
- Rural development and land reform – R46.4m
- Public works – R44.5m
- Higher education and training – R43.7m
- Trade and industry – R42.7m
- Home affairs – R42.6m
- Social development – R40.5m
- Transport – R37.5m
- Public service and administration- R36.9m
- Justice and constitutional development – R36.6m
- Labour – R36.6m
- Health – R34.5m
- Energy – R34.3m
- Cooperative governance and traditional affairs – R31.5m
- Basic education – R31.1m
- Public Enterprises – R30.9m
- Mineral Resources – R30.7m
- Planning, monitoring and evaluation (ministerial support)– R30.5m
- Sport and recreation South Africa – R30.3m
- Correctional services – R29.5m
- Small business development – R26.5m
- Tourism – R26.4m
- Economic development – R25.6m
- Women - R16.6m
Less than R10m
- Traditional affairs – R8.5m
- International relations and cooperation – R8.3m
- Communications – R7.1m
- Science and technology – R5.5m
- Arts and Culture – R5.2m
- Telecommunications and postal service – R4.8m
- National Treasury – R4.4m