`vat_deductible_percent` (purchase-side deductibility)
vat_deductible_percent (purchase-side deductibility)
vat_deductible_percent expresses how much of the input VAT is deductible for this purchase line. Bookkeeping uses it to compute deductible VAT consistently and to separate non-deductible parts deterministically without spreadsheets.
Example values: 100, 50.