“How to switch banks” gets answered the same way everywhere online, as if the process is identical wherever you live. It isn’t. If you’re in the UK, switching is something a service does for you, largely hands-off, with a legal guarantee behind it. If you’re in the US, switching is something you do yourself, step by step, with nobody redirecting anything on your behalf. Treating those as the same process is how people in the US end up assuming a payment “just moves” when it doesn’t.
Here’s each one on its own terms.
UK: the Current Account Switch Service does the work
The UK runs a genuinely unusual setup: the Current Account Switch Service (CASS), backed by over 40 banks and building societies, moves your entire current account, balance, direct debits and standing orders, to a new bank within 7 working days of your agreed switch date. You don’t chase each payment individually. You pick a switch date, and the two banks handle the transfer between them.
What actually happens in that window: your balance transfers on the switch date, your existing direct debits and standing orders get redirected to the new account, and anyone who sends payments to your old account, or takes them from it, gets an automatic notification of your new account details so their records update too. Your old current account is closed as part of the process. You don’t do that step yourself.
There’s a formal backstop if something goes wrong: the Current Account Switch Guarantee refunds any charges or interest incurred on either account as a direct result of a switching error, and it’s your new bank’s job to sort it out, not yours to negotiate between two banks.
One limit worth knowing: CASS moves current accounts, not savings accounts or ISAs. If you’re also moving an easy-access savings account or a cash ISA, that’s a separate transfer you arrange directly, outside the switching service. And anything set up in the final week before your switch date, a new direct debit you add late, needs to go directly to the new account rather than relying on the switch to catch it.
Choosing your switch date
You pick the switch date when you apply, so it’s worth being deliberate about it rather than taking whatever’s offered first. Avoid setting it right before a payday or a big automatic payment you’d rather not have caught mid-transfer. A date a few days after a payday, once that income has already landed and cleared, gives the switch room to complete cleanly without a payment arriving in the narrow window while your old account is being wound down.
If you have an overdraft on the old account
An overdraft balance on the account you’re switching from doesn’t block a CASS switch the way it blocks a manual closure elsewhere; the new bank will usually ask whether you want to bring the overdraft across, subject to their own approval, or clear it separately before the switch date. Worth confirming which applies before you commit, since what an overdraft actually costs can look very different from one bank’s terms to another’s.
US: there’s no equivalent, so plan the order yourself
The US has nothing like CASS. No service automatically redirects your payments or closes your old account for you. Switching banks in the US means doing each step deliberately, in order, and confirming each one before moving to the next.
Open the new account first, before you touch anything at the old one. You need somewhere for deposits and payments to land before you redirect them.
List every automatic deposit and withdrawal on the old account. Your paycheck, Social Security or benefit payments if applicable, and every bill paid automatically: utilities, streaming subscriptions, a loan payment, credit card autopay. Miss one off this list and it’s the one that bounces.
Redirect deposits first, and wait to confirm they’ve actually landed. Fill out the direct deposit change with your employer, or the redirect form for benefit payments, then wait for at least one deposit to actually show up in the new account before you rely on it. Don’t assume the paperwork worked; check the balance.
Move automatic payments only after deposits are confirmed, so bills don’t get paid out of an account that no longer has income going into it. Set each one up on the new account, then cancel it on the old account once you’ve confirmed the new one is active, not before, to avoid a bill accidentally getting paid twice or missed entirely.
Keep both accounts open and lightly funded for a full cycle. A month is the safer window, long enough to catch anything that pays on an unusual schedule, a quarterly fee, an annual subscription, before you close the old account behind you.
The mistakes that actually happen
Two patterns cause most of the trouble in a manual US switch. The first is closing the old account too early, before a full billing cycle has confirmed every automatic payment actually moved, which is the same trap covered in more depth in the closing guide. The second is forgetting a payment that only happens occasionally: an annual domain renewal, a car registration fee, a quarterly insurance premium. These don’t show up on a typical month’s bank statement, so they’re easy to miss when you’re building your list of what to redirect. Pulling twelve months of statements before you start, rather than just the most recent one, catches most of them.
Does opening the new account affect your credit score?
Usually not in any meaningful way. Opening an ordinary checking or current account typically involves an identity and account-history check, not the kind of hard credit inquiry that applying for a card or a loan generates, so switching banks on its own isn’t something that tends to move your credit score. Where this can get murkier is if the new account comes bundled with an overdraft facility or a linked credit product you apply for at the same time; that separate application is what could trigger a hard inquiry, not the basic act of opening a current account.
Why this actually matters
The gap between these two processes isn’t trivia. It’s the difference between a switch that mostly happens to you, in the UK, versus one you have to manage actively and in the right sequence, in the US. Assume the UK process when you’re actually in the US system, and you’ll skip steps a redirect service would otherwise have handled, which is exactly how a direct debit or a paycheck ends up going to a dead account.
If your move is from one joint account to another, both holders need to be part of the switch on either side of the Atlantic; CASS and a manual US switch both assume both names are cooperating, and neither process works cleanly if one holder isn’t on board.
Switching for a cash incentive
UK banks in particular sometimes offer a cash incentive to switch via CASS, and it’s a legitimate reason to pick one bank over another. Just don’t let the incentive alone make the decision. A one-time payment doesn’t offset a mediocre ongoing rate or a monthly account fee for long, so weigh it against the account’s actual day-to-day terms, not just the number attached to switching into it.
What to actually check before picking the new bank
The switch mechanics matter, but so does what you’re switching into. If the point of moving is better savings behavior alongside a working current account, check whether the new bank’s savings side is actually competitive, rather than assuming a big-name bank pays a decent rate by default; most of the big banks don’t. If fees are the reason you’re leaving, confirm the new account genuinely has no maintenance or minimum-balance fees rather than a low introductory rate that reverts after a few months. Neither of those checks slows the switch itself down; they just mean the account you land in is actually worth the effort of moving to.
Before you finalize the old account
Whichever country you’re in, don’t close the old account until you’ve actually confirmed the new one is fully live: deposits landing, bills paying correctly, nothing bounced. Closing an account too early is where most switching headaches actually come from, not the switch itself. Give it one full payment cycle before you shut the door on the old bank for good.