The system has an array of control elements to ensure the consistency of the information entered. The calculation of the tax is made on the basis of the information in the declaration form according to the scale in force.

This declaration, once submitted, passes a whole series of integrity tests before being accepted.

An open and ergonomic system, e-declaration offers all taxpayers subject to income tax the ability to complete their tax return online. This is an interactive system that follows the responses provided by the taxpayer to fit the form. The taxpayer does not have to make any calculations himself.