Where payouts stall
The admin that sits between earned and paid
Forms come back by email, long after you asked
You ask each new affiliate for a W-9 or W-8BEN, then chase the ones who forgot
The forms that do come back sit in email threads and a shared folder
Turn on one setting and every affiliate who can earn sees an upload box in their dashboard, linked to the blank IRS forms
You notice the missing form after the money has gone
Your payout list shows what each affiliate earned and nothing about their paperwork
So you check names against a folder of PDFs or pay now and ask later
Filter payouts due by form status and see who is ready to be paid in one view
Every EU affiliate invoices you in their own format
Each affiliate sends an invoice when they remember, laid out however they like
Your accountant still needs the right VAT treatment on every one of them
Switch on self-billing and every paid payout comes with an invoice made out on the affiliate’s behalf
14-day free trial. No credit card required.
Affiliates send the form, you decide who gets paid
From upload to payout
Switch it on
Go to Settings, then Affiliate Portal and turn on “Ask promoters to upload W9 / W8-BEN”. It covers your whole account and stays off until you turn it on.
Let affiliates upload
Anyone on a campaign with monetary rewards sees the request in their dashboard. They pick US or non-US, fill out the IRS form and upload it.
Check who is covered
Filter your affiliates and payouts due by “Has W8/W9 form”. Open any file from the affiliate’s profile to check what they sent.
Pay the ready ones
Rows still missing a form carry a warning flag. Leave them out of the run and pay everyone else.
14-day free trial. No credit card required.
Invoices that pick the VAT rule for each affiliate
Each affiliate’s VAT details decide which invoice they get.
VAT invoices for VAT-registered affiliates
An affiliate who adds a VAT ID gets a VAT invoice. In your own country your local rate or a custom rate applies.
Reverse charge across EU borders
An affiliate in another EU country gets reverse charge at 0%. The invoice carries the reverse-charge wording for you.
VAT IDs checked before any invoice
Every VAT ID is checked against the EU’s VIES service. An invoice is made only after the ID passes.

What it covers
Every form and invoice tied to the affiliate who earned it
An upload box where they check their earnings
Affiliates pick US or non-US, download the matching IRS PDF and upload it as a PDF, JPG or PNG up to 10 MB. The panel comes in English, German, Spanish, French or Portuguese and you can rename or hide it on any portal page.
Each file kept on the affiliate’s profile
Open, download or remove any form and upload one yourself when an affiliate sends it by email. Your affiliate CSV export has a link to each W-9 and W-8BEN file for your accountant.
Invoices ready at payout or before it
Invoices are made when you pay a payout batch or mark it paid, automated payouts included or before you pay if you prefer. Affiliates download their copies from the Invoices tab in their portal.
EU-standard XML for every finalized invoice
Export finalized invoices as EN 16931 XML in UBL 2.1 (Peppol BIS Billing 3.0) or ZUGFeRD/Factur-X, one at a time or as a bulk ZIP. Affiliates can download the XML for their own invoices too.
14-day free trial. No credit card required.
Since launching their affiliate program on FirstPromoter, Submagic has generated €1,635,717 in total revenue and built a network of 9,000+ promoters.
Partner-attributed monthly revenue tracked
Subscription businesses
Average setup time
Rated by verified users
Related Features
Payouts
Auto-payouts
Pay one invoice and every affiliate gets paid, with tax forms collected when they claim their money.
Payouts
Affiliate payout software
Pay affiliates yourself through Stripe Payouts or PayPal, or export a CSV for Wise, bank transfer and crypto.
Reporting
Affiliate reporting
See what each affiliate earned and what the program costs before you approve the next payout.
Guides and Documentation
Help doc
How to enable tax form collection
Where the setting lives and what affiliates see.
Help doc
How invoices are generated
When invoices are made and where affiliates find them.
Help doc
Managing invoices for EU companies
How VAT IDs, local rates and reverse charge work.
Frequently Asked Questions
Don’t see the answer you need?
That’s ok. Just drop a message and we will get back to you ASAP.
