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Bonnières-sur-Seine, in Communauté de communes Les Portes de l'Ile de France
Photo (Bonnières-sur-Seine): Lionel Allorge, CC BY-SA 3.0

Yvelines · Île-de-France · 23,456 residents · Chair: Cécile Debon

Communauté de communes Les Portes de l'Ile de France

€7.7 million spent in 2025.

€330 per resident · Town groupings of the same size: €506

What Communauté de communes Les Portes de l'Ile de France spends, by policy

  • Administration and shared services37%€2.8M

    Bodies do not all file the same costs here: some put all their staff under it.

  • Waste, water and environment32%€2.4M
  • Streets and transport8%€641k
  • Culture, sport and youth6%€451k
  • Health and social care2%€156k
  • Passed on to other bodies15%€1.1M
The 3 other items (1%)
  • Town planning and housing1%€80k
  • Education< 1%€224
  • Not assigned to a policy< 1%€28

Source: 2025 accounts of Communauté de communes Les Portes de l'Ile de France (DGFiP), by public policy.

Suppliers and recipients

The same €7.7M, by recipient.

Source: 2025 accounts of Communauté de communes Les Portes de l'Ile de France (DGFiP).

1 contracts signed in 2025 · €1.3M before tax

Why this total differs from the €4M 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

€848k of capital spending in 2025 (building, renovation, equipment), €36 per resident. Town groupings of the same size: €78.

  • Streets and transport€271k
  • Culture, sport and youth€218k
  • Administration and shared services€209k
  • Waste, water and environment€120k
  • Health and social care€23k
  • Other policies€6k

On top of that, €30k paid to other bodies for their own equipment (towns, intercommunalities, associations…).

Source: 2025 accounts of Communauté de communes Les Portes de l'Ile de France (DGFiP), by public policy.

Revenue and financing

Revenue: €9.2M · borrowing: €400 · spending: €7.7M.

Breakdown of resources

  • Taxes (business and household taxes, VAT share)60%€5.5M
  • State and other contributions25%€2.3M
  • Grants for works and VAT refunds11%€1M
  • Users and rents4%€350k
  • Other receipts< 1%€41k
  • Borrowing< 1%€400

Source: OFGL, 2025 accounts of the main budget.

Debt and taxes

€34 of debt per resident

Town groupings of the same size: €311

0.4 year of savings to repay it

2025 accounts. Debt and taxes: OFGL, consolidated (main and side budgets). Per resident: amount divided by the population (Insee). “Town groupings of the same size”: median of the 303 town groupings of 15,000 to 25,000 residents.

The levels above Communauté de communes Les Portes de l'Ile de France

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

  • IntercommunalityCommunauté de communes Les Portes de l'Ile de FranceWaste, water, urban transport, economic development
    €330
  • DépartementYvelinesMinimum income, elderly and disability care, middle schools, county roads
    €1,045
  • RegionÎle-de-FranceHigh schools, regional trains, training, business support
    €459

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 de communes Les Portes de l'Ile de France

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 de communes Les Portes de l'Ile de France, or sit on its council? A figure to correct, context to add: write to us.

Page edited by Qipu, independent of Communauté de communes Les Portes de l'Ile de France · Sources and method

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