Your Checkout Fails in Four Places — Three of Them Are Copy Problems

Most checkout copy is written for the happy path. The button says "Pay $49." The receipt says "Thank you." Nobody thinks about what the page says when the card gets declined at 11pm on a Sunday.

That's a mistake, because your checkout doesn't fail once. It fails in four distinct states, and three of them are pure copy problems — no redesign, no new payment provider, no engineering sprint.

This is a checklist for one flow: checkout. Not your pricing page, not your onboarding, not your upgrade modal. Just the moment money is supposed to change hands, and the moment it doesn't.

The Four Failure States in a Checkout Flow

Every failure in checkout lands in one of these. Write copy for all four or you're shipping a flow with three dead ends.

1. Pre-submit validation. The card number is short, the expiry is in the past, the postal code doesn't match. The user hasn't