Country guide · Spain
Get an ITIN as a Spanish citizen
Last updated: August 2026
Bottom line
Get an ITIN as a Spanish citizen is straightforward once the Spain paperwork is in order. As a Hague Convention member, Spain issues a single apostille that the US recognizes without further legalization. Treaty status (for ITIN holders): Active US treaty available, use Form W-8BEN to claim reduced withholding once the ITIN is assigned.
Spain’s autónomo regime + IRPF brackets often push consultants into a US LLC for non-Spanish-source revenue. Talk to a Spanish gestor before relocating tax residency. This is the country-specific guide for Spanish citizens to get an itin, apostille, banking, and treaty notes that change by jurisdiction. For the canonical procedural sequence (the steps everyone follows regardless of citizenship), see the main ITIN application page.
An ITIN (Individual Taxpayer Identification Number) is the IRS-issued tax ID for non-US residents without an SSN. It unlocks US tax filings, US bank accounts at issuers that require a TIN, and, most importantly for digital nomads, a US credit file. The application is Form W-7 + a valid reason code + original ID documents. Wrong reason code is the #1 cause of rejection.
What Spanish citizens need to apply for an ITIN
Apostille
Ministerio de Justicia or notary
~1·3 weeks, ~USD 15. As a Hague Convention member, Spain issues a single apostille that the US recognizes without further legalization.
Banking flow
Spanish residents open Mercury remotely; SEPA outbound from Mercury to BBVA/Santander runs same-day. Wise multi-currency is the common bridge.
Timezone
UTC+1 (CET), 6 hours ahead of IRS Austin. IRS Austin is on UTC-6 / Asunción Migración on UTC-3.
Country-specific note
Common: Spanish freelancers billing US clients via Upwork or direct contracts who get hit with 30% US backup withholding and need an ITIN + W-8BEN to reduce it under treaty.
Treaty status (for ITIN holders): Active US treaty available, use Form W-8BEN to claim reduced withholding once the ITIN is assigned.
Questions Spanish citizens ask about itin application
How long does the apostille take for Spanish citizens? +
1·3 weeks through Ministerio de Justicia or notary, at roughly USD 15. As a Hague Convention member, Spain issues a single apostille that the US recognizes without further legalization.
How do Spanish-resident clients usually handle banking with their US LLC? +
Spanish residents open Mercury remotely; SEPA outbound from Mercury to BBVA/Santander runs same-day. Wise multi-currency is the common bridge.
What is the most common reason Spanish citizens apply for an ITIN? +
Common: Spanish freelancers billing US clients via Upwork or direct contracts who get hit with 30% US backup withholding and need an ITIN + W-8BEN to reduce it under treaty.
Apply for your ITIN, Spanish citizen
See the full procedural sequence on the canonical ITIN application page, or jump straight to the apply form.
Apply for your ITINKeep going
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