How to add your card to Claude and subscribe to Pro / Max
Claude plans are bought on claude.ai. First check that your account was not subscribed on iPhone, then enter the card. Card number, expiry, CVC and billing address are in your card email.
Steps
- 1
Check the plans
Open claude.com/pricing in a browser, look at Pro and Max, and click "Try Claude" to sign in. The screenshot was opened in Canada; the currency and prices are whatever the page shows you.

claude.com/pricing - 2
Open Billing
On claude.ai, click your avatar (bottom left) → Settings → Billing. Web subscribers can upgrade and manage the payment method here. If it says "Subscribed via iOS app", the account was subscribed on iPhone — see the note above.

An iPhone-subscribed account: Billing shows "Subscribed via iOS app" (personal info masked) - 3
Upgrading an iPhone-subscribed account
Such an account sees "Upgrade in the iOS app" when it tries to upgrade on the web, with a code to open the phone app. A card can’t be added on the web.

What an iPhone-subscribed account sees when upgrading on the web (QR code blurred) - 4
Web subscription: enter the card
Pick a plan, then on the payment page enter the card number, expiry, CVC and billing address from your card email (country and postcode must match), and confirm.
Screenshot coming — follow the text above for now. - 5
Check it worked
Back in Settings → Billing you should see your plan and the last digits of the card.
Screenshot coming — follow the text above for now.
Common reasons it fails
Why Claude charges on our cards failed over the last 60 days (share of failed charges):
- About 82%: not enough balance. Tax may be added based on the billing address, so the charge can be above the list price — keep a few dollars extra.
- About 13%: wrong expiry date. After repeated wrong expiry entries the issuer locks the card, and even the right date stops working. If it fails once, stop and check the card email carefully.
- About 5%: the card was already cancelled (Blocked) and Claude kept charging the old card. Switch to your current card in Billing.
- Some charges were reversed — the merchant cancelled or refunded the charge. That is not a card problem.
Check the balance and transactions, or top up this card: Card lookup & top-up
Renewal failed? Read: Claude Pro renewal failed
Still stuck? Contact support
Tell us which step failed and what the page said — a screenshot helps.