TBM

[pine sedge]

Yes, but for subscriptions it is defined as a percentage of the invoice amount because this can vary due to coupons, proration, credit balance etc:
https://stripe.com/docs/api/subscriptions/create#create_subscription-transfer_data-amount_percent

[junior marsh]

Will it transfer every payment or just the 1st payment?

[pine sedge]

That will set the transfer amount for the subscription, all payments, but you can optionally update it following the first invoice if you want to change the percentage

[junior marsh]

Would i need a webhook? or can i do that when creating the subscription?

[pine sedge]

You'd set the initial percent when creating the subscription, then you could use a webhook to trigger the change afterward, sure

[junior marsh]

do you have a quick code to show me for updating a transfer?