smilelari-customer-balances

[analog drum]

When you're referring to "unpaid balance", is your expectation that any unpaid invoice for a subscription would also be considered an "unpaid balance"?

Or are you specifically talking about if the customer has a negative customer credit balance?

[haughty otter]

Any unpaid invoice for a subscription

[analog drum]

Gotcha - then your suggestion of checking the balance property on the customer object won't work. Instead, you'll need to retrieve all the invoices for a customer that are still unpaid (https://stripe.com/docs/api/invoices/list#list_invoices-status) to see if there are any that are still due

[haughty otter]

Ah! Thank you. After that, what is the best way to submit the payment for the invoices that are unpaid?

[analog drum]

You would call the API to pay the invoice - https://stripe.com/docs/api/invoices/pay