A W-9 tells us the legal name, entity type, address and taxpayer identification number to put on your 1099-NEC. It is required before your first payout — no W-9, no payment.
You complete it on your dashboard. You need:
Legal name — exactly as it appears on your tax return. Business name — only if you operate under one. Entity type — individual/sole proprietor, single-member LLC, partnership, C corp, S corp, or other. Address — where the 1099 gets mailed. Taxpayer ID — your SSN, or an EIN if you have one for your business.
How it is protected. Your taxpayer ID is encrypted with AES-256-GCM before storage, using the same key management as our payment-card store. What staff can see is the last four digits and nothing more. It is decrypted only when a 1099 is actually being prepared.
Non-U.S. partners need a W-8 series form instead. Complete what you can and raise a support request from your dashboard — the team will send the right form.
You can update your W-9 at any time; the new details apply to future filings.
The partner help centre covers attribution, the ledger, payouts and the selling rules.