The TicketBAI mandate (Basque Country)
TicketBAI is mandatory for all companies with fiscal address in the Basque Country foral territories. Each invoice must carry an XAdES-BES digital signature, a SHA-256 hash chained to the previous invoice, a TBAI QR code, and be submitted to the relevant Hacienda Foral.
Technical requirements
XAdES-BES digital signature
Each invoice must carry an XAdES-BES signature using a certificate issued by a certification authority recognized by the relevant Hacienda Foral.
SHA-256 hash chain
Each invoice hash is chained to the previous, forming an immutable sequence verifiable by the Hacienda Foral.
TBAI QR and identifier
Every invoice must display the TBAI QR code and identifier. The QR links to the Hacienda Foral verification portal.
FAQ — TicketBAI Basque Country
When was TicketBAI BATUZ (Bizkaia) made mandatory?
Bizkaia BATUZ became mandatory for the final wave of businesses in 2024. Gipuzkoa and Araba rolled out their mandates subsequently.