Adding a payment method
Quick answer
Portal asks you to add a payment method the first time you create a billable resource, such as a firewall or a managed VPN server. Go to Account → Billing → Payment Methods in Portal to add one directly, or add it in the moment when a creation form prompts you.
Several pay-per-use products in Portal require a saved payment method before you can create them. If you don't have one yet, the creation flow stops you with an "Add Payment Method" prompt rather than letting you continue without a way to bill the resource.
Adding a card
Trigger the prompt, or go there directly
Either start creating a billable resource, such as a firewall or a VPN server, and let the portal prompt you, or go to Account → Billing → Payment Methods in the sidebar and add one proactively.
Choose Credit Card
The "Add Payment Method" dialog offers Credit Card ("save your credit card for automatic payments").
Complete the dialog
Follow the on-screen steps to finish saving the card.
Already have PayPal or another method set up?: The Add Payment Method dialog notes that PayPal and previously configured payment methods are managed through a separate "classic portal" rather than this dialog. If that applies to you, use the classic portal link shown in the dialog instead of adding a new card here.
Add Payment Method
Select a payment method to add.