The comparability is ensures by the application of common concepts and definitions (European System of Accounts ESA2010). Between regions comparability is ensured by the NUTS classification. In addition, regional comparability of metropolitan regions is ensured by a single methodology applied to all NUTS.

For a benchmark revision, all series are revised over the entire period. This ensures series continuity and smooths out any breaks in the series due to justified changes in methodology.

Consistency between regional and national data is ensured by the estimation process itself. Depending on the aggregates:
- either the values ​​are estimated by regionalizing the national aggregates, in which case consistency is immediate;
- or the regional aggregates are estimated and then adjusted at the end of the process to the national aggregates to ensure consistency.

The consistency of the national totals of the regional accounts with the national data is not ensured on insee.fr between the publication of the new campaign of the annual national accounts at the end of May and the publication of the regional accounts of this same campaign in the following January; in fact, pending this publication, only the regional accounts of the previous campaign are disseminated, and therefore not aligned with the annual national accounts for the last three years.

Regional data are consistent across nested NUTS levels and across nested NACE levels. To ensure this consistency, aggregation checks are implemented during the estimation process.