If your business runs on an Amazon Business Card or Amazon Business Prime Card from American Express, next Thursday your card changes banks. On August 14, 2026, the entire portfolio transfers to U.S. Bank, ending an eight-year Amex partnership — new issuer, new Mastercard network, new account number, new login. Amex and U.S. Bank have both published the mechanics in their FAQs, but nobody has assembled them into the one thing a busy owner actually needs: a checklist with dates. So here it is — because buried in those FAQs are at least three ways this transition can quietly cost you money if you do nothing.
The dates that matter this week
By August 12 — last day to redeem existing points, whether toward Amazon purchases or statement credits. After this, your unredeemed balance rides the transfer. August 13 — last day purchases earn rewards on the Amex version (also the last day any enrolled Amex Offers count). August 14 — the switch: your Amex card's era ends, and the U.S. Bank replacement card (it arrived in a plain white envelope in late July or early August — check your mail pile before you shred it as junk) activates and becomes the card to use. August 16 — the trap date: any AutoPay or scheduled payment set to run after this is canceled by Amex, not transferred. August 20 — per U.S. Bank, your account balance and rewards balance become visible again. Between the 14th and the 20th, you're flying blind — normal, planned, but unnerving if you don't expect it.
The three ways this costs you money if you ignore it
One: the canceled AutoPay. Your payment settings do not migrate. If your business pays this card automatically and you assume it'll keep happening — the payment after August 16 simply won't occur, and a missed payment on a business card means late fees and interest. Set a manual reminder now; re-establish AutoPay with U.S. Bank once your new account is live.
Two: the new account number. Every recurring charge billed to this card — software subscriptions, ad spend, suppliers — will start declining after the switch unless updated. The one exception: if the card is saved in your Amazon or Amazon Business wallet, Amazon updates it automatically. Everything else is on you. Make the list this week.
Three: your records vanish. On August 14 you lose access to this account at americanexpress.com — statements, Year-End Summary, everything. For a business card, those are tax documents. Download every statement and the Year-End Summary before Thursday. This is the least reversible item on the list.
What happens to your points and your card
Unredeemed points transfer to U.S. Bank one-to-one, and the rewards structure survives the move — Prime members keep 5% back at Amazon, and the annual cap on top-tier earning actually rises. Your credit line carries over unchanged, and U.S. Bank says most customers keep their APR (the formal terms notice went out by mail in June — worth actually reading). Personal credit scores aren't affected. One nostalgic footnote: if you carry the metal Prime card, Amex asks you to call for a prepaid envelope to send it back — the plastic version you can just shred.
The bigger pattern
This is the second major card-portfolio migration of the summer — Discover cardholders are living through the same wave-by-wave move into Capital One right now, with its own quirks we've covered. The playbook for surviving any of them is identical: know your dates, assume nothing transfers automatically except the debt, and download your records before the door closes. Card partnerships are corporate marriages; when they end, the paperwork lands on you.
The bottom line
Nothing here requires panic — accounts transfer automatically, points survive, the new card is already in your mailbox. But three clicks this week (download statements, note the AutoPay gap, list your recurring charges) are the difference between a seamless Thursday and a September spent untangling declined charges and a late fee. Questions after the 14th go to U.S. Bank at 1-833-426-4690 — Amex, for this card, will no longer know you.
Sources: American Express transition FAQ, U.S. Bank transition page, U.S. Bank announcement. Last updated: August 6, 2026.
