Yvelines · Île-de-France · 14,740 residents
How much does Montesson spend?
Mayor: Antoine Lemaire since March 2026 · 33 town councillors
What the money pays for in Montesson
The 2024 operating expenditure — investment aside — sorted this time by public policy rather than by type of spending.
Montesson spends 11 % more per inhabitant than towns of 10,000 to 20,000 inhabitants.
Allocated to a public policyShare of budget against towns of the same size18.9 M€
“elsewhere”: what towns the same size usually devoteMontesson devotes a larger share of its budgeta smaller share
- General administration7.3M€39 %elsewhere: 32%more than elsewhere (32%)
- Education and training3.1M€16 %elsewhere: 18%less than elsewhere (18%)
- Health and social action2.7M€14 %elsewhere: 9%more than elsewhere (9%)
- Culture, youth and sports2.4M€13 %elsewhere: 19%less than elsewhere (19%)
- Regional planning and housing1.3M€7 %elsewhere: 8%less than elsewhere (8%)
- Security and public health984k€5 %elsewhere: 4%more than elsewhere (4%)
- Environment930k€5 %elsewhere: 1%more than elsewhere (1%)
- Transport139k€1 %elsewhere: 3%less than elsewhere (3%)
- Economic action61k€0 %elsewhere: 0%same as elsewhere (0%)
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.
Spending27.1 M€
Charges de personnel11.1M€41 %Achats et charges externes6M€22 %Charges de gestion couranteof which 216 k€ of grants to associations and private bodies1.2M€5 %Impôts et taxes (charges)386k€1 %Revenue22.3 M€
Property tax in Montesson
municipal rate on buildings, set in 2025 · unchanged since 2023
Median for towns of its size band: 41.8%.
In 2024, Montesson collected 8.8 M€ in property and residence taxes, or 40% of its revenue.
What the town builds
invested in 2024 · €534 per inhabitant
Of which 8.3 M€ of equipment. That is +40.9 % 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 · 798 k€ in total
Towns of its size: €778 per inhabitant · +39.7 % 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 2026 · 27 contracts
Top supplier: Eurovia Ile de France, 1.3 M€, réaménagement rue des merlettes
All the town’s contracts (300)
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, 2020, 2021, 2022, 2023, 2024, 2025, 2026.
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.