Setting up a business bank account: what UK small businesses need to know

If you run a UK limited company, you need a separate business bank account, and the fastest way to get one is with a digital bank like Starling, Tide, Monzo Business, or Revolut Business. You can usually open an account in under 30 minutes from your phone, with no monthly fee for basic tiers. High street banks like Barclays, HSBC, and NatWest still work, but they tend to be slower, involve more paperwork, and often charge monthly fees. Sole traders are not legally required to have a separate business account, but it is strongly recommended.

That covers the broad picture. The right choice depends on how much you bank, whether you take cash, whether you need multicurrency, and how your accounting software likes to talk to the bank. Here is what to actually weigh up.

Why a separate account matters

For limited companies, a separate business account is effectively mandatory. The company is a distinct legal entity, its money is not your money, and mixing the two creates all sorts of problems at year end. HMRC and your accountant will want to see a clean paper trail. If you have not formed a company yet, our step-by-step guide to registering a limited company in the UK covers the Companies House side.

For sole traders, it is not a legal requirement, but mixing personal and business finances makes your Self Assessment harder, makes claiming expenses messier, and can make it harder to prove your income if you ever apply for a mortgage or business loan. A free digital business account costs nothing and saves hours of bookkeeping. If you are still weighing up whether sole trader or limited company is right for your business, that decision changes a few of the account requirements below.

Digital vs high street: the honest comparison

Digital-first banks have taken a huge share of UK small business banking in the last few years, and for good reason. They are faster to open, cheaper, have better mobile apps, and usually integrate cleanly with accounting software out of the box.

High street banks still have advantages if you handle a lot of cash, need in-person relationship banking, want overdraft and lending facilities from day one, or have complex requirements like foreign currency accounts with large volumes. They also have longer track records, which matters to some clients and suppliers.

The main digital options

Starling Business is often considered the gold standard for free business banking. It is a fully licensed UK bank, has a clean app, integrates with Xero, FreeAgent, and QuickBooks, and costs nothing for the basic tier. Cash deposits are possible at Post Office branches. Great for sole traders and limited companies that bank mostly electronically.

Tide targets small businesses with a free tier that includes basic banking plus invoicing tools. It is an e-money institution rather than a fully licensed bank (though deposits above a threshold are held with Barclays), which matters for some purposes. Paid tiers add more transfers and features.

Monzo Business comes in Lite (free) and Pro (£9 a month) flavours. The Pro tier adds integrations with accounting software, tax pots, and multi-user access. Good if you already love the Monzo personal app.

Revolut Business is strongest if you need multicurrency. You can hold and transact in 25+ currencies with interbank exchange rates on the lower tiers. Free tier is functional but limited. Paid tiers from £19 a month upwards add more transfers and better rates.

High street options

The big five (Barclays, HSBC, Lloyds, NatWest, Santander) all offer business current accounts, typically free for 12 to 18 months as an introductory period, then £5 to £12 a month. They handle cash well, offer overdrafts and lending, and have physical branches.

The downside is the application process. A high street business account often takes one to three weeks to open, requires documents, and sometimes an in-branch meeting. If you are in a hurry to start trading, this matters.

What you need to open an account

The documents and information required vary by bank, but a standard list covers most cases. You will need proof of identity for all directors and significant shareholders, proof of address (usually a recent utility bill or bank statement), the company's Certificate of Incorporation, the company's UTR (Unique Taxpayer Reference), details of the business activity and expected turnover, and details of all persons of significant control.

Digital banks usually do all of this in-app via photo uploads. High street banks sometimes require originals or certified copies.

The KYC delay nobody warns you about

Know Your Customer (KYC) checks are where most applications get stuck. Banks are required by law to verify who you are, what the business does, and where the money is coming from. For straightforward sole traders and simple UK limited companies, this is usually automated and takes minutes. For anything unusual, it can take days or weeks.

Things that trigger extra scrutiny include complex ownership structures, directors who are not UK residents, businesses in higher-risk sectors (crypto, adult content, cash-heavy retail, cross-border consultancy), and businesses with unclear sources of initial capital. If any of these apply, allow extra time and have documents ready.

If your application stalls, responding quickly to requests for more information is the single best thing you can do. Banks often move on to other applications if yours sits unanswered for more than a few days.

Fees and what they actually cost

Free business accounts are real, but "free" does not always mean "no fees for anything". Here is what to watch.

Monthly account fee is the headline. Free tiers exist at Starling, Tide, Monzo Business Lite, Revolut Business Free, and introductory periods at high street banks.

Transaction fees matter if you do lots of payments. Most free tiers include unlimited electronic transfers but cap faster payments or international transfers. Read the small print.

Cash and cheque handling varies a lot. If you take cash, check how deposits work. Starling uses Post Office branches. Tide has its own network. High street banks have branches. Some digital banks charge per cash deposit.

International payments can be expensive. Revolut Business offers near-interbank rates, Wise is excellent for specific currency transfers, and traditional banks often charge 2 to 4 percent on the exchange rate. If you pay overseas suppliers or invoice in other currencies, this adds up fast.

Accounting software integration

Most UK small businesses use Xero, QuickBooks, or FreeAgent. All four major digital banks (Starling, Tide, Monzo Business, Revolut Business) integrate cleanly with all three platforms via Open Banking. Transactions sync automatically, usually within hours. This kind of low-friction data flow is exactly the sort of thing our guide to automating your small business treats as a priority from day one.

High street bank integrations also exist but vary in quality. HSBC, Barclays, and NatWest all have Open Banking feeds that work with Xero. Some older accounts may require manual CSV imports.

If you are running FreeAgent, check whether your bank is in the supported feeds list, because it only integrates with about 50 UK banks directly. The same is true of Xero: most banks work, but a few do not have direct feeds.

Multicurrency: when you actually need it

Most UK small businesses do not need multicurrency. You invoice in pounds, you pay in pounds, and life is simple. But if you sell to international customers, pay overseas contractors, or import goods, multicurrency is a game changer.

Revolut Business and Wise Business both let you hold and receive funds in multiple currencies at close to interbank rates. For a UK business that bills US or EU clients, getting paid into a local USD or EUR account avoids receiving bank fees and poor exchange rates. The difference can be 2 to 5 percent of each invoice.

A practical recommendation

Most new UK limited companies should open with Starling Business. It is free, fully licensed, has a great app, integrates cleanly with accounting software, and opens in about 15 minutes. If you need multicurrency, add Wise Business or Revolut Business alongside it. If you take a lot of cash or want in-branch service, pair a digital account with a high street account for cash deposits.

Avoid the temptation to open five accounts on day one. Two is usually enough. Consolidate when you can. The banking piece is one of around ten things to nail in the first 30 days after starting a business, if you would like to see where it fits into the wider setup.

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If you would like a practical checklist for the first month of running a new business, try the free audit, or book a 15-minute call at https://cal.eu/voll.co.uk/15min to talk through setup in more detail.