jasonkuhrt - custom invoice fields

[inner sun]

You can set default custom fields for a customer, but this does require integration with the API
https://stripe.com/docs/invoicing/customize#custom-field-inheritance

[elder rover]

I need the default custom fields per subscription

[inner sun]

That's not supported, you would need to have you integration set those fields per invoice in that case

[elder rover]

IIUC the best way to do that would be via webhook, where each billing cycle would result in new invoices being created that I can modify?

Or do you suggest another approach?

[inner sun]

Correct - you'd want to do this during the draft period (aprox 1hr) following the invoice.created event:
https://stripe.com/docs/billing/invoices/subscription#adding-draft-invoice-items

That speaks to adding invoice items, but ignore that. The same timing allows you to update the invoice details for custom fields.

[elder rover]

Thanks @inner sun

[inner sun]

NP!