Switching business bank accounts is genuinely straightforward if you do it in the right order. The single biggest cause of pain isn't the switch itself — it's missing one direct debit, leaving one client paying into the old account, or losing visibility of the transition during a VAT quarter. This guide walks the playbook that minimises all three.
Does the Current Account Switch Service work for businesses?
Yes — partially. The Current Account Switch Service (CASS) is the formal switching scheme run by Pay.UK. It guarantees that within 7 working days, your direct debits, standing orders and incoming credits move to the new account, with any payments mis-routed during the transition automatically forwarded for 36 months. The CASS guarantee covers most UK personal and business accounts at most providers.
Exceptions worth knowing:
- E-money institutions (Tide, Anna, Wise) and CASS: EMIs are not generally part of the CASS scheme, which means switches involving them often fall outside the formal guarantee. The mechanics still work — you can still move direct debits — but the automated routing doesn't apply.
- Limited companies: CASS supports most business accounts up to certain employee count limits. Most freelancer-scale Ltds qualify. Larger businesses sometimes don't and have to do a manual switch.
- Switching schemes vary: Starling and most high-street banks fully support CASS. Tide-to-Starling switches typically aren't CASS-guaranteed because Tide isn't in the scheme.
For switches that fall outside CASS, the playbook is essentially the same as a CASS-eligible switch but you handle the direct debit migration manually.
The switching playbook
Step 1 — open the new account first (don't close the old one yet)
Apply for the new account and wait until you have a sort code and account number. Don't touch the old account yet. Most freelancers underestimate how many small things are wired into their bank details — a 1-month buffer where both are live is the safety net.
Step 2 — make a full list of what's wired in
Log into the old account and audit:
- Incoming: client invoice payments (look at the last 6 months), any subscription clients on standing order, refund accounts, expense card top-ups.
- Outgoing direct debits: accounting software, hosting, professional indemnity insurance, software subscriptions, HMRC VAT/PAYE direct debits, pension contributions.
- Outgoing standing orders: office rent, regular contractor payments.
- Card-on-file: Stripe, PayPal, business cards used for SaaS — these need updating manually.
A spreadsheet with each item's name, amount, frequency and next-due-date is worth 20 minutes of effort. Use our expense tracker as a starting point.
Step 3 — update your invoice template
Add the new bank details to your invoice template. If you use our invoice generator, update the saved bank-details field. New invoices from this date go out with the new account.
For existing unpaid invoices: don't issue new ones — the originals are valid. Just send a short follow-up email when the client is approaching payment: "Heads up, we've changed bank accounts. Please use these details for payment of invoice #X — new sort code XX-XX-XX, account XXXXXXXX."
Step 4 — initiate CASS (if eligible) or migrate manually
If both old and new accounts support CASS, log into the new bank's app and start the switch. You'll be asked which old account to switch from. The scheme handles direct debits, standing orders and routing of mis-sent payments. Choose a switch date 5–10 working days from now to give yourself runway.
If CASS doesn't apply (e.g. you're switching from Tide to Starling), do it manually:
- Move each direct debit to the new account by contacting each supplier (most have self-service portals).
- Move standing orders by setting them up fresh in the new account.
- Update each client and each card-on-file as you reach them.
Step 5 — run both accounts in parallel for at least one month
This is the most important safety net. For the first 30+ days, keep both accounts live. Money landing in the old account gets transferred to the new one weekly. Outgoing payments from the new account are checked against your direct-debit list. Anything missing surfaces during this period.
Step 6 — close the old account once it's quiet
After 60+ days with no incoming payments or unexpected outgoings, you can safely close the old account. Don't rush this step — closing too early is the most common cause of post-switch pain.
When to switch
- Not at the end of a VAT quarter. The reconciliation for that quarter spans the switch and creates a mess. Switch in the first month of a new VAT quarter and you have 3 months of clean data before the next return.
- Not in late January if you're a sole trader (Self Assessment deadline) or anywhere near the start of the tax year if you handle complex year-end accounting.
- Not when expecting a major incoming payment. If a £20,000 invoice is due in 10 days, wait until it's received before switching.
- Otherwise: anytime. Switching itself doesn't take long; the parallel-run buffer is what matters.
VAT-registered freelancers — extra care
If you're VAT-registered, three things need attention during a switch:
- HMRC VAT direct debit. If HMRC auto-collects your VAT, the direct debit needs to be re-set up against the new account. CASS will move it automatically; for non-CASS switches, log into your HMRC business tax account and update the bank details. Confirm before the next VAT due date.
- MTD software connection. Your accounting software (FreeAgent, Xero, QuickBooks) has an open-banking feed connected to your bank account. Reconnect the feed to the new account. This is usually a re-authentication flow, not a full re-setup, but verify transactions are flowing before the next VAT return.
- VAT-pot logic. If you used the old bank's "Pots" or "Spaces" to ringfence VAT, recreate the same setup in the new account immediately. Don't go a VAT quarter without a tax pot — the cash discipline is too valuable.
The five most common mistakes
- Closing the old account too soon. Standing orders you forgot bounce, late client payments get sent to a closed account and dropped on the floor. Keep it live for 60+ days minimum.
- Forgetting card-on-file at SaaS providers. Stripe, PayPal, your accountant's Direct Debit, software subscriptions — all linked by card or DD. The first failed payment causes a service interruption you'll notice at the worst time.
- Not updating the HMRC direct debit. If you owe VAT and HMRC tries to collect from a closed account, you get a late payment penalty even if the money was sitting in the new account.
- Skipping the parallel-run period. Saving 30 days of duplicate-account effort isn't worth the post-switch firefighting.
- Forgetting to update clients who pay by BACS / standing order. CASS routes payments for 36 months but doesn't notify the payer that they should update their records. Some clients won't update until you tell them; some accounting teams won't update at all.
The formal CASS guarantee is 7 working days from your chosen switch date. In practice the direct debits and standing orders usually move in 3–5 days, with the formal guarantee being the safety net for outliers. You'll get a confirmation email when each item moves.
For business accounts, a soft search is usually run by the receiving bank. A formal application that includes credit facilities (overdraft, business loan) involves a hard check. Most freelancer-scale switches use only a soft search; the impact on credit scoring is minimal.
You can — but the reconciliation is messier. The VAT return for that quarter spans transactions from two banks; you'll need to combine the data from both. If timing allows, switching in the first month of a new VAT quarter avoids the pain. If you must switch mid-quarter, use accounting software that handles multi-bank reconciliation cleanly.
If CASS applies, the payment is automatically forwarded to the new account for 36 months. If CASS doesn't apply (EMI involved), the money sits in the old account until you transfer it manually — which is why keeping the old account live for 60+ days matters.
Yes if you have a HMRC direct debit set up (VAT, PAYE) — update the bank details via your business tax account. You don't need to formally "tell HMRC" your bank changed for general tax purposes; the change is only relevant where HMRC is set up to collect or refund money directly.
No — these change with the bank. CASS handles the routing of inbound payments for 36 months. After that, payments to the old details will be returned to sender.
Yes — a single email is enough. "Heads up, we've moved bank accounts. From [date] please use new sort code XX-XX-XX, account XXXXXXXX. Existing direct debits / standing orders move automatically." Most clients update without complaint; some accounts teams need 2–3 reminders.
You can — CASS works in both directions and there's no limit on how often you switch. Some freelancers exploit the high-street bank introductory free periods by switching every 18 months. The administrative effort makes this unappealing for most.
General guidance on switching business bank accounts in the UK. Not financial advice. For complex situations (multi-jurisdiction businesses, credit facilities tied to existing accounts), consult an accountant or business banking specialist.