Skip to content

Deel: Create a tax form for the authenticated worker — request body — body data form type: W8 BEN tax number

Create a tax form for the authenticated worker: request body, field body / data / form_type: W8_BEN / tax_number. Complete fields and constraints for contract 2026-10-27.

API reference · Contract 2026-10-27

SDK schema: Create a tax form for the authenticated worker — request body — body / data / form_type: W8 BEN tax number

FieldTypePresenceDescription and constraints
$objectRootForeign tax identifying number. At least one of us_tax_number or tax_number is required unless is_ftin_not_legally_required is true.
typestringRequired within parentForeign tax ID type.
One of: FTIN
valuestringRequired within parentForeign tax identifying number.
Maximum length: 20

Report an issue with this page

Necessary

Required for sign-in, security, authorization, and remembering your choices.

Always active

Analytics

Helps us understand which product and documentation features are useful.

Performance diagnostics

Uses performance tracing and privacy-masked session replay to diagnose problems.

You can change these choices at any time from Cookie settings.