TicketBAI vs Verifactu vs SII: which invoicing system applies to you in 2026
TicketBAI, Verifactu and the SII are not the same thing and do not apply to the same people. We clarify which one applies to you depending on where you pay tax, what happens if you operate inside and outside the Basque Country, and how to avoid setting up (or paying for) two systems by mistake.