Data from Filosofi are subject to statistical and tax confidentiality.

The publication thresholds are based on the tax population (the number of people belonging to tax households). These publication thresholds are defined for indicators of disposable income based on the total number of people in the area whose standard of living is positive or zero.

No statistics are published for very small areas (fewer than 100 people).
Only the median disposable income per household (or standard of living) is published for slightly larger areas (100 people or more).
The other indicators are published for larger areas (2,000 people or more).

The indicators can be broken down by socio-demographic characteristics provided that the sub-population in question comprises at least 500 people. For the poverty rate, it is also necessary to ensure that tax confidentiality is respected, i.e. there must be at least 11 poor households and 11 non-poor households.

The indicators are rounded to ensure minimal uncertainty, in order to preserve secondary statistical confidentiality and avoid any impression of excessive precision.
For poverty rates, rounding depends on the number of people in the area (to the nearest odd whole number for an area with fewer than 2,000 people; to the nearest 2,000 for areas with between 2,000 and 20,000 people; to the nearest tenth for areas with more than 20,000 people). Furthermore, when rates fall within the ranges 0%–3% and 97%–100%; the value is truncated at the 3% and 97% thresholds.
Amounts in euros are rounded to the nearest ten, the Gini index to the nearest thousandth, whilst other income indicators are rounded to the nearest tenth.

The shares of income components (as well as the shares of sub-components) are reported for areas with 2,000 or more people, provided that the component (or sub-component) is non-zero for 11 or more households.
If a single component (or sub-component) does not meet this threshold, a second component (or sub-component) is also suppressed.
Suppression also applies to at least two sub-components when the sum of these is less than the total before rounding.