Which platforms ask for an ITIN?

Upwork, Fiverr, Toptal, 99designs, PeoplePerHour, Uber, Lyft, DoorDash, Instacart, Amazon Mechanical Turk, and most US-based 1099 platforms ask for a tax ID. SSN holders provide an SSN; foreign workers provide an ITIN. The platform uses the ID to issue Form 1099-NEC or 1042-S at year-end.

Can I work on Upwork without an ITIN?

Upwork allows foreign freelancers to work without an ITIN by filing Form W-8BEN with a foreign tax ID and country of residence. But payouts above $600 per year still trigger US tax reporting, and treaty rates are not honored without an ITIN. Long-term Upwork freelancers usually file for an ITIN to stop default 30% withholding.

What reason code do gig workers use on Form W-7?

Most foreign gig workers use reason code (a) Tax treaty benefit (when their country has a US tax treaty) or (b) Non-resident filing a US tax return (when filing Form 1040-NR for their gig income). The platform W-8BEN paired with an ITIN documents the treaty claim.

How long does the ITIN take for a gig worker?

The IRS publishes a 7 to 11 week processing window. Gig workers filing under Exception 1a (third-party withholding agent letter) can apply without a year-end tax return; the platform W-8BEN request letter satisfies the exception. A Certifying Acceptance Agent shortens the cycle.

Updated June 25, 2026

ITIN for Gig Economy Workers: Upwork, Fiverr, and More

Why Do Gig Platforms Require an ITIN From Foreign Workers?

US platforms are required to collect a tax ID for every person they pay. SSN holders are reported on Form 1099-NEC. Foreign workers are reported on Form 1042-S, which requires either an ITIN or a Foreign Tax Identifying Number (FTIN) plus a properly executed W-8BEN.

Without an ITIN, platforms default to 30% backup withholding on every payout. With an ITIN plus a treaty W-8BEN, that rate drops to the treaty rate (often 0% to 15%).

Which Gig Platforms Most Often Require an ITIN?

Freelance marketplaces: Upwork, Fiverr, Toptal, 99designs, PeoplePerHour, Freelancer.com
Rideshare and delivery: Uber, Lyft, DoorDash, Instacart, Grubhub
Task platforms: Amazon Mechanical Turk, TaskRabbit, Rover
Creator platforms: YouTube, Twitch, Patreon, Substack, Medium
Affiliate networks: Amazon Associates, Impact, ShareASale, ClickBank

For the broader breakdown see ITIN for gig workers.

How Does the W-8BEN Plus ITIN Combination Work?

Form W-8BEN tells the US platform two things: the worker is a foreign person, and the worker is claiming a tax treaty benefit. The ITIN goes in Part I Line 5 of the W-8BEN. Without an ITIN, the form is incomplete for treaty purposes and the platform applies the default 30% rate.

Worker requests the platform W-8BEN request letter.
Worker files Form W-7 with the letter under Exception 1a (or with a year-end 1040-NR).
IRS issues the ITIN in 7 to 11 weeks.
Worker submits the completed W-8BEN with the ITIN.
Platform applies the treaty rate going forward; prior withholding is refundable on Form 1040-NR.

What Documents Does a Gig Worker ITIN Application Need?

Form W-7 with reason code (a) or (b)
Current passport
Either: Form 1040-NR (if filing this year) OR Exception 1a packet (W-8BEN request letter from the platform)
Treaty article reference (when claiming treaty rate; the IRS publishes the article numbers by country)

What Happens If a Gig Worker Skips the ITIN?

Platform withholds 30% of every payout under default rules
Worker cannot claim treaty rate to lower that 30%
Worker cannot file Form 1040-NR to recover overpaid withholding
Year-end 1099/1042-S forms may be issued without a US tax ID, triggering IRS mismatch notices
Some platforms suspend payouts entirely until a valid tax ID is provided

Frequently Asked Questions

Foreign gig workers earning US-source income (or paid through US platforms) need an ITIN to claim treaty benefits on Form W-8BEN, to file Form 1040-NR if required, and to receive 1099 forms with a valid US tax ID. Without an ITIN, platforms typically withhold 30% backup withholding on every payout.

Stop the 30% withholding. Apply for your ITIN with a Certifying Acceptance Agent — $297 flat, ready in 7 days.