The maths behind municipal failure - and the model to fix it

R467 billion in unpaid municipal debt. Only 41 clean audits. Municipalities collecting 69 cents in every budgeted rand. The logic of local government finance is broken - and the model to fix it already exists.

South Africa's latest municipal finance data is not a collection of isolated problems. It is one problem, expressed in different units. Aggregate consumer debt reached R467.2 billion by December 2025 - up R62 billion in six months. Municipalities collected only 69% of billed revenue against a budgeted target of 78.6% - and owed R160.8 billion to creditors, 84.5% of it more than 90 days overdue. The most recent AGSA audit outcomes show only 41 clean audits. Nearly half of all treated water is lost before it reaches a paying customer. These numbers are connected. They describe the same underlying failure: a system that has drifted from the conditions required for financial sustainability - and has stayed there.

Anton Groenewald - Group Head of Regional Operations at the City of Tshwane and former Municipal Manager of both Swellendam and Midvaal - has spent years working through this problem from the inside. In a recent Future Cities Africa podcast, he walked through the model, the proof, the path forward, and exactly what it takes to run a municipality that works. His paper, The Logic of Local Government Finance, identifies both the diagnostic and the fix with unusual precision. The model is built around what he calls the golden thread - three benchmarks drawn from National Treasury's Circular 71. Revenue collection above 95%. Staff costs at or below 35% of total operating budget. Repairs and maintenance funded at a minimum of 8% of the asset base. Hit all three consistently, and Groenewald's analysis shows the municipality generates a meaningful operational surplus. Miss them - and the deterioration compounds. In his assessment, a relatively small number of South African municipalities are meeting all three benchmarks - and a large majority are not.

Groenewald identifies five foundational flaws embedded from the outset: a culture of non-payment that was never corrected at the start of the democratic era; the undercosting of basic service expansion to low-income areas; the displacement of capital investment into operating budgets; a scale of mismanagement that exceeded what oversight structures were designed to absorb; and the treatment of the first warning signs as anomalies rather than structural signals. Those flaws are not random - and neither is the path out of them. The carrying capacity of any municipal tax base is mathematically constrained. Groenewald's model is explicit: high- and middle-income households must generate enough net income to cross-subsidise the cost of serving low-income, no-income, and informal settlement households. Where the ratio tips too far - where the revenue-generating base is too small relative to the indigent burden - the model becomes structurally unviable regardless of management quality. Very few low-income households ever migrate to full-paying status. Planning frameworks must work within these constraints, not assume they do not exist.

The accountability question is equally precise. Under Sections 135 to 148 of the Municipal Finance Management Act, MECs of provincial CoGTA and MECs of provincial treasuries hold intervention powers. There are nine CoGTA MECs and nine Treasury MECs - 18 people. They authorise the appointment of Municipal Managers and Section 56 senior managers - the top leadership of every municipality. Groenewald's argument is direct: professionalisation frameworks without moral fibre and ethical calibre in those 18 positions will produce paperwork, not performance. The November 2026 local government elections create the most significant transition and accountability moment in the electoral cycle. That window is now open.

Proof in Practice

Midvaal Local Municipality  ·  Gauteng  ·  Groenewald served as Municipal Manager

Ranked South Africa's most financially sustainable municipality three years running - the golden thread in practice

Midvaal Local Municipality is one of Groenewald's primary proof cases - ranked the most financially sustainable municipality in South Africa three years consecutively from 2022 to 2024. It is a complex, growing urban-rural municipality, not a small, simple operation. Revenue collection was consistently above 95%, including moratoriums, indigent relief, and special rates categories. Staffing costs were kept below 35% of expenditure. Surplus funds were invested, building a capital investment fund of R34 million by 2022. The variable was not geography, history, or the national transfer formula. It was disciplined management of the golden thread ratios and the governance architecture to enforce them. (Source: Groenewald, The Logic of Local Government Finance, 2026)

Swellendam Local Municipality  ·  Western Cape  ·  Groenewald served as Municipal Manager

A smaller municipality that dismantles the excuses - same benchmarks, same result

Swellendam Local Municipality recovered from a struggling administration between 2012 and 2017. A new management team appointed in 2017 stabilised the leadership, secured significant grant funding for infrastructure, and brought revenue collection consistently above 95%. Groenewald uses Midvaal and Swellendam together precisely because they dismantle the standard excuses. Different province, different scale, different demographics, different revenue base. The same financial ratios. The same outcomes. The logic of local government finance does not change by size. What differs between the municipalities that are performing and those that are not is not circumstances. It is choices - and the accountability of the people authorised to make them. (Source: Groenewald, The Logic of Local Government Finance, 2026)

The Market View

The November 2026 election is the sharpest advisory and systems procurement window the sector has seen in years - and Groenewald's model is the specification.

The post-election transition window is when councils authorise capital budgets and systems upgrades, when incoming accounting officers inherit financial management platforms, and when the 18 MECs face immediate scrutiny on the quality of the senior appointments they endorse. For companies in the municipal systems, advisory and financial management space, the legislative environment is also tightening. The MFMA Amendment Bill enforces funded budgets and strengthens consequence management. National Treasury moves to regulate minimum mSCOA business requirements in 2026/27. The draft Public Procurement Regulations - open for public comment until 15 June 2026 - reshape how municipalities procure. Each of these creates a compliance-driven demand signal that converges on the same capability gap Groenewald identifies: municipalities cannot manage what they cannot measure, and they cannot measure what they do not have systems for. For advisory firms, the entry conversation that Groenewald's model makes available - carrying capacity analysis, mandate audit, ratio benchmarking against Circular 71 - is the most concrete, data-driven engagement framework this sector has produced. The opportunity is to deliver against it before November, not after.