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La Teste-de-Buch, in Communauté d'agglomération Bassin d'Arcachon Sud (COBAS)
Photo (La Teste-de-Buch): Reynald G, CC BY-SA 4.0

Gironde · Nouvelle-Aquitaine · 71,165 residents · Chair: Thierry Gouaichault

Communauté d'agglomération Bassin d'Arcachon Sud (COBAS)

€59.4 million spent in 2025.

€835 per resident · Urban-area groupings of the same size: €649

What Communauté d'agglomération Bassin d'Arcachon Sud (COBAS) spends, by policy

  • Loans: repayments and interest21%€12.3M
  • Culture, sport and youth18%€10.7M
  • Streets and transport16%€9.7M
  • Education11%€6.8M
  • Administration and shared services7%€4.4M
  • Public safety5%€3.2M
  • Economy and trade5%€2.9M
  • Health and social care3%€2M
  • Passed on to other bodies10%€5.7M
The 2 other items (3%)
  • Town planning and housing1%€785k
  • Not assigned to a policy2%€1.2M

Source: 2025 accounts of Communauté d'agglomération Bassin d'Arcachon Sud (COBAS) (DGFiP), by public policy.

Suppliers and recipients

The same €59.4M, by recipient.

  • Companies and contractors30%€18.1M

    See the names ↓

  • Banks and lenders21%€12.3M
  • Grants and contributions20%€12M
  • Staff12%€7.2M

    Pay and contributions.

  • Joint bodies and syndicates10%€5.7M
  • Compulsory contributions5%€3M
  • Benefits paid to people< 1%€2k
  • Other2%€1.1M

    Councillors’ allowances, taxes paid, other costs.

Source: 2025 accounts of Communauté d'agglomération Bassin d'Arcachon Sud (COBAS) (DGFiP).

3 contracts signed in 2025 · €1.2M before tax

Why this total differs from the €18.1M paid to companies

These are the amounts of the contracts signed in the year, over their whole length, not what was paid. The money paid in a year also goes to older contracts and to purchases too small to be published (under €40,000 excl. VAT). For a framework agreement, the amount is a ceiling.

Investment and works

€13.1M of capital spending in 2025 (building, renovation, equipment), €184 per resident. Urban-area groupings of the same size: €101.

  • Education€6.5M
  • Streets and transport€3.4M
  • Culture, sport and youth€3M
  • Administration and shared services€150k
  • Health and social care€53k

On top of that, €3.8M paid to other bodies for their own equipment (towns, intercommunalities, associations…).

Source: 2025 accounts of Communauté d'agglomération Bassin d'Arcachon Sud (COBAS) (DGFiP), by public policy.

Revenue and financing

Revenue: €45.7M · borrowing: €15M · spending: €59.4M.

Breakdown of resources

  • Taxes (business and household taxes, VAT share)58%€35.2M
  • State and other contributions11%€6.5M
  • Grants for works and VAT refunds6%€3.4M
  • Users and rents< 1%€289k
  • Other receipts< 1%€297k
  • Borrowing25%€15M

Source: OFGL, 2025 accounts of the main budget.

Debt and taxes

€2,215 of debt per resident

Urban-area groupings of the same size: €559

10.4 years of savings to repay it

€204 of local taxes per resident

Urban-area groupings of the same size: €51

2025 accounts. Debt and taxes: OFGL, consolidated (main and side budgets). Per resident: amount divided by the population (Insee). “Urban-area groupings of the same size”: median of the 117 urban-area groupings of 50,000 to 99,000 residents.

The levels above Communauté d'agglomération Bassin d'Arcachon Sud (COBAS)

Spending per resident in 2025, and what each level pays for.

  • IntercommunalityCommunauté d'agglomération Bassin d'Arcachon Sud (COBAS)Waste, water, urban transport, economic development
    €835
  • DépartementGirondeMinimum income, elderly and disability care, middle schools, county roads
    €1,191
  • RegionNouvelle-AquitaineHigh schools, regional trains, training, business support
    €509

Each row: the body’s own spending per resident, the figure at the top of its page (DGFiP). Not to be added up: a grant from one level is spent by another.

Who is part of Communauté d'agglomération Bassin d'Arcachon Sud (COBAS)

Understanding these figures

Who does what

The intercommunality collects and treats waste, often runs water and sanitation, organises urban transport, and pays part of its revenue back to its member towns.

Official table of responsibilities (July 2025)

Why the levels are not added up

The same euro can appear twice: once when a region or a département pays a grant, again when the town spends it. Each page shows its own body’s spending.

Where these figures come from

Spending: the accounts of the main budget published by the DGFiP, by public policy. Revenue, debt and taxes: OFGL. Contracts: published contract data (DECP), amounts planned at signing.

Do you work for Communauté d'agglomération Bassin d'Arcachon Sud (COBAS), or sit on its council? A figure to correct, context to add: write to us.

Page edited by Qipu, independent of Communauté d'agglomération Bassin d'Arcachon Sud (COBAS) · Sources and method

Accounts 2025 (DGFiP, OFGL). The method · See the source