The three rulings of 3 July 1816 defined the major areas of activity of the new body..
- Voluntary deposits: this body can receive deposits from individuals or public bodies and, since its origin, attracts funds from the legal professions
- Pension funds: since 1853, Caisse des Dépôts has been managing pension funds of civil servants
- Other activities: including the indemnification of settlers of Santo Domingo (1825), the management of Compagnie des quatre canaux, the management of the accounts for the Legion of Honour and financial services for the army.
By law, Caisse des Dépôts uses its funds mainly to purchase public “annuities” and therefore contributes to the funding of the French state.