As the title says: where can I set the billing_cycle_anchor when setting up a subscription using a Checkout Session? It's clear how this is done when setting up a subscription using the subscription API ( https://stripe.com/docs/api/subscriptions/create ); however, I cannot find any details about how to set the billing_cycle_anchor in a Checkout Session ( https://stripe.com/docs/api/checkout/sessions/create ). Does anyone know how I can do this (I'm using node.js)?