# TVA déductible by month × rate — window=-inf → +inf

month      tva_tx  count      basis HT     TVA ded  CA3 line
------------------------------------------------------------------------------
2025-10   20.0000      2          6.08        1.22  ligne 20
2026-01    0.0000      2         58.43        0.00  ligne 17 + 24 (autoliquidation) — verify with line-detail
2026-01   20.0000      8        345.02       69.00  ligne 20
2026-02   20.0000      2        765.00      153.00  ligne 20
------------------------------------------------------------------------------
           TOTAL                      1174.53      223.22

# Notes:
#   - This is TVA déductible (supplier side). For TVA collectée (customer side),
#     use dolibarr-tva-reconciliation/scripts/tva-by-month.sh.
#   - tva_tx==0 lines may be either truly exempt (e.g. La Poste timbres)
#     or autoliquidation intra-UE (e.g. Wise). Run deductible-line-detail.sh.