How is your public transport financed?
How does public transport work?
Île-de-France Mobilités is the organising authority for public transport in the Île-de-France region. His role as conductor is to organise, imagine and finance mobility throughout the region.
To ensure that transport works on the ground, Île-de-France Mobilités contracts with transport companies with very familiar names (such as SNCF, RATP, Lacroix Savac, Transdev or Keolis), paid to ensure :
- Maintenance
- The farm
- Modernisation of the lines
- Passenger Safety
- The implementation of the various services in the station
These operating contracts represent the annual expenditure for the proper functioning and development of the network.
In 2025, they amounted to €11.8 billion .
Who participates in the financing of public transport?
Employers = 50%
Users = 32%
Local authorities (Region, departments, City of Paris) = 12%
Other (tourist tax, fines, advertising revenue) = 6%
In 2025, the sale of subscriptions and tickets corresponded to 32% of Île-de-France Mobilités' total budget. Indeed, it is mainly thanks to the investment of several players that the regional network finds its financial balance.
Ile-de-France companies: 50%
Companies with more than 10 employees based in the Île-de-France region are the main contributors and represent 50% of Île-de-France Mobilités' total funding. In what ways do they participate in the functioning of the network? It is through:
- The mobility payment : a contribution due by private and public employers, to finance transport and mobility services
- Reimbursement : employers are obliged to reimburse up to 50% of their employees' transport tickets and can go up to 75%.
Travellers: 32%
Passengers are the second source of funding for public transport in the Ile-de-France region through the purchase of various subscriptions (annual and monthly Navigo and Imagine R) and single tickets. They make it possible to finance the network up to 32%.
Public competitions: 12%
What are "public competitions"? These are financial aids awarded in the form of contributions, social actions, donations, compensation or subsidies by public institutions. But who are we talking about? From the Region, the City of Paris and the departments. Together, they contribute 12% of the annual budget.
Breakdown of funding for public assistance:
30.38% = City of Paris
51% = Île-de-France Region
7.74% = Hauts-de-Seine
3.75% = Seine-Saint-Denis
3.01% = Val-de-Marne
1.59% = Yvelines
0.98% = Essonne
0.91% = Val-d'Oise
0.64% = Seine-et-Marne
The rest: 6%
A final part, about 6%, comes from the revenue generated by the advertisements you see displayed on the platforms, in your transport or at bus stops, fines and various taxes.
Financing, the cornerstone of the social role of transport
It is this plural ecosystem of financing that allows the network to modernize each year, to gain in precision and to move towards more sustainable energies and materials.
An ecosystem that also offers Île-de-France Mobilités the possibility of offering preferential rates and financial aid (such as the Navigo Solidarity Pass, the Free Youth Integration Pass or reduced single ticket fares for example) thus giving access to public transport to as many people as possible.
Companies = €136.69
The region, city of paris and departments = €33.10
Ads, Fines & Taxes = €19.47
What guests pay = €90.80
Similarly, this funding allows all passengers to pay only part of their ticket.
Indeed, the real cost of the monthly Navigo Pass, without aid, subsidies or external funding other than that of the user, would be 280.06 euros instead of the 90.80 euros/month charged to Ile-de-France residents.
The financing of transport is therefore a cornerstone of the vision of transport desired by Île-de-France Mobilités. Fair, accessible and, above all, scalable mobility.