API Reference

Submit W-8BEN tax form

post
https://{environment}.masspay.io/{VERSION}/payout//tax/interview/w8ben

This POST endpoint is used to submit a W-8BEN tax form for a specific user identified by their user_token. The W-8BEN form is used by foreign individuals to certify their foreign status and claim tax treaty benefits (if applicable). Basic information (name, address, phone) is retrieved from the user's existing profile.
To use this endpoint, you need to provide the user_token as a parameter in the URL Path and the W-8BEN form data in the request body.

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Path Params
string
required
Body Params
string
required
length between 2 and 2

Two-letter country code of citizenship

string
enum

Type of US TIN (if applicable)

Allowed:
string

US Taxpayer Identification Number (if applicable)

string
length ≤ 25

Foreign Tax Identification Number

boolean
Defaults to false

Check if FTIN is not legally required

string
length ≤ 50

Reference number for your records

tax_treaty_benefits
object
string
required
length ≤ 65

Name of the person signing the form

Responses

404

Not Found

Updated about 1 month ago

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Updated about 1 month ago