Yvelines · Île-de-France · 12,573 residents
How much does Triel-sur-Seine spend?
Mayor: Cedric Aoun since March 2026 · 33 town councillors
What the money pays for in Triel-sur-Seine
The 2024 operating expenditure — investment aside — sorted this time by public policy rather than by type of spending.
Triel-sur-Seine spends 7 % less per inhabitant than towns of 10,000 to 20,000 inhabitants.
Allocated to a public policyShare of budget against towns of the same size13.4 M€
“elsewhere”: what towns the same size usually devoteTriel-sur-Seine devotes a larger share of its budgeta smaller share
- General administration4.2M€31 %elsewhere: 32%less than elsewhere (32%)
- Education and training3.9M€29 %elsewhere: 18%more than elsewhere (18%)
- Culture, youth and sports2M€15 %elsewhere: 19%less than elsewhere (19%)
- Health and social action1.2M€9 %elsewhere: 9%same as elsewhere (9%)
- Security and public health774k€6 %elsewhere: 4%more than elsewhere (4%)
- Transport690k€5 %elsewhere: 3%more than elsewhere (3%)
- Regional planning and housing607k€5 %elsewhere: 8%less than elsewhere (8%)
- Economic action31k€0 %elsewhere: 0%same as elsewhere (0%)
- Environment1k€0 %elsewhere: 1%less than elsewhere (1%)
Shares are computed on the allocated amount, excluding transfers. “Elsewhere”: the median share of towns the same size — half devote more, half less. Source: DGFiP accounting balances.
Spending and revenue
What the town pays for: staff, purchases, debt. 2019–2024 trend on each line.
Spending17.7 M€
Charges de personnel8.2M€46 %Achats et charges externes3.9M€22 %Charges de gestion couranteof which 77 k€ of grants to associations and private bodies806k€5 %Impôts et taxes (charges)283k€2 %Charges financières219k€1 %Charges exceptionnelles163k€1 %Revenue21.2 M€
Property tax in Triel-sur-Seine
municipal rate on buildings, set in 2025 · unchanged since 2023
Median for towns of its size band: 41.8%.
In 2024, Triel-sur-Seine collected 11.1 M€ in property and residence taxes, or 52% of its revenue.
What the town builds
invested in 2024 · €347 per inhabitant
Of which 3.2 M€ of equipment. That is −55.4 % compared with 2023.
Investment section of the town’s accounts. The rest is funded by the savings made on day-to-day operations.
Debt
per inhabitant at end of 2024 · 11.5 M€ in total
Towns of its size: €778 per inhabitant · +78.4 % per inhabitant since 2018
Outstanding debt and gross savings: OFGL, main budget. The number of years is the debt-repayment capacity, debt divided by gross savings.
What the town buys
in public contracts awarded in 2019 · 8 contracts
Top supplier: HP BTP, 600 k€, travaux d’aménagement des voiries, grosses réparations et petit entretien
Marchés de plus de 40 000 € HT déclarés à la notification (DECP) : montants des contrats, pas les paiements. Les plus petits marchés ne sont pas publiés ; les montants manifestement erronés sont écartés. Years published by the town: 2019.
Compare with another town
Per inhabitant, 2024 accounts, OFGL. Towns of the same département, by size. A town above or below is not better or worse run. Property-tax rate: municipal share only, excluding the inter-municipal body and additional levies, source REI DGFiP.