Accuracy and transparency

A verifiable French tax methodology

Not a black box: every calculation is backed by official sources, automated checks and a dated tax version.

2026 French tax version · last reviewed July 2026

See the full methodology
  1. Traceable01

    Official tax sources

    French tax rules and official forms (2042, 3916, 2047, 2074-CMV) documented for the current tax year.

    Every amount can be traced back to the transaction and the rule applied.

  2. Checked02

    Consistency checks

    Missing data, duplicates, currencies and discrepancies are detected before boxes are generated.

    Automated safeguards reduce the risk of omissions or FX mistakes.

  3. Up to date03

    Regulatory updates

    The methodology is versioned and reviewed whenever French tax rules change — you always file on the right year.

    Tax changes are embedded in a dated version — not a personal spreadsheet.

French tax methodology | FlashFiscal