When editing a payment form, you can add a billing address by scrolling down to Additional information and activating the billing address selector.

Billing address Stripe

On the payment form itself, your customers will first choose the country they reside in and the address fields will adjust to the country they're based in, e.g. a state selector will be visible in the U.S. and a province selector will be visible in Canada.

Billing address Stripe
Billing address Stripe

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