Pay everyone.
All at once.
inflow is the payment engine for businesses that pay lots of people — research participants, contractors, creators, communities. Send mass payouts by bank transfer, PayPal, or check, while we onboard your payees and collect their tax forms.
A versatile payment engine
Everything between "we owe these people money" and "everyone got paid".
Multiple payment options
Pay people the way they want to be paid: US bank account (ACH), PayPal, or check (US and Canada). You control which options each organisation offers.
Mass payouts
Upload a spreadsheet, review every payment, and send hundreds of payouts in one go. Imports run in the background — no waiting on big batches.
Payee onboarding
We collect payment details from your payees so you don't have to chase them. New payees get a welcome email and a secure account — no passwords.
Tax forms handled
inflow collects W-9 and W8-BEN tax forms on your behalf, so your payouts stay 1099-ready without the paperwork chase.
Payments that wait for details
Missing bank details? Payments are held safely and released automatically the moment the payee adds a payout method.
Headless API
A complete API under everything, so you can embed payouts into your own product with a fully headless integration.
From spreadsheet to paid, in three steps
Upload your payout list
A spreadsheet with emails and amounts is enough. inflow matches existing payees and creates accounts for new ones.
Check everything before it happens
Preview every payment, fee, and payee before you commit. Cancel at any point before finalising and nothing has changed.
We take it from there
Payouts process in the background. Payees missing payment details get onboarded, and their payments release automatically.