If you, like me, need to figure out how to link directly to the PayPal financing checkout (PayPal Credit) instead of the standard PayPal Checkout… you may run into some issues. PayPal has recently updated all of their documentation and has basically removed all internal links to anything even remotely helpful unless you want to use their new JavaScript-based checkout.

TL;DR, here is all you need to add to your request to link directly to PayPal Credit Checkout:

USERSELECTEDFUNDINGSOURCE = BML

More info can be found in their docs here, even though “BML” is not listed as an optional value… it still works.