25% rate is the default VAT rate and not 0%. Encountered this bug when a test case failed for Norway SAF-T PR, see odoo/enterprise#9724 closes odoo/odoo#49662 X-original-commit: 0d4fe47745d241b99a690c16554383a4e3c7c86b Signed-off-by: Josse Colpaert <jco@openerp.com>