Business Banking for UK Small Businesses

Your business bank account is the foundation of your finances. The right account makes bookkeeping easier, lowers your monthly costs, and gives you tools — invoicing, payment links, expense cards — that would otherwise need separate subscriptions. The wrong account quietly drains money in fees you never see and creates friction every time you try to pay a supplier or accept a card payment.

You probably need one, even if you don't legally have to

If you trade as a limited company, a separate business account is effectively mandatory: your company is a separate legal entity and its money cannot sit in your personal account. If you trade as a sole trader, there is no legal requirement — but most personal accounts' terms explicitly prohibit business use, and mixing transactions makes Self Assessment significantly harder. The practical answer is the same in both cases: open a dedicated business account before money starts flowing.

Our do I need a business bank account guide walks through the edge cases — landlords, hobby income under the trading allowance, and very low-volume side hustles — where you might reasonably defer.

App-based vs high-street vs challenger

UK business banking now broadly falls into three buckets. App-based accounts such as Tide, Mettle, Monzo Business, Starling Business and Revolut Business offer fast onboarding (often same-day), free or low-cost standard tiers, and modern features like in-app invoicing, integrated expense cards and accounting software links. They typically have lower limits on cash deposits and may not offer arranged lending. High-street banks (HSBC, Lloyds, Barclays, NatWest, Santander) usually offer a 12 to 18-month free period, then move to a monthly account fee plus per-transaction charges; the trade-off is in-branch service, easier cash handling and access to wider lending. Challenger banks with full banking licences (Starling, Allica, Cynergy) sit between the two — modern apps but with deposit protection and a wider product range.

What to compare before opening one

The hub guides go into depth, but the short list is: monthly account fee, free transaction allowance and excess charge, cash deposit fees and limits, ATM withdrawal fees, FX margins if you bill or pay internationally, integrations with your accounting software, the cost of a debit card and any additional cards, and whether the provider offers a payment terminal, payment links or invoicing. Our fees guide demystifies the jargon.

What you'll need to apply

Expect to provide photo ID, proof of address, your business address and a description of what you do, and — for limited companies — your company registration number, articles of association and details of directors and People with Significant Control (PSCs). Some providers ask for projected turnover and a sample invoice. The fully-detailed list is in our application checklist.

Open one account, then evaluate after 90 days

The best approach is to open an account quickly so you can start trading, then review at the 90-day mark when you can see your real transaction pattern. Switching is friction but not impossible — and there is no rule that says you must use just one provider. Plenty of UK small businesses run a primary current account at one provider and a secondary account for FX, savings or card payments at another.