Best Business Bank Account UK 2026: Free vs Fee Compared

This is the single distinction nobody selling you a business account wants to put front and centre, and it is the answer to the 'what is the £85,000 bank rule?' question people keep searching (the figure rose to £120,000 on 1 December 2025).

There are two kinds of provider on this page:

• A licensed bank (Starling, Monzo, NatWest/RBS, and now Revolut Bank UK Ltd) holds your money under a UK banking licence. If the bank fails, the Financial Services Compensation Scheme repays your eligible deposits up to £120,000 per person, per banking licence. This is a statutory government-backed guarantee. Mettle is in this group by proxy: your cash sits with National Westminster Bank plc, so it carries the same FSCS cover.
• An electronic money institution (a pure e-money account such as ANNA, and parts of Tide) does not hold a banking licence. Instead it must 'safeguard' your money by keeping it in a separate, ring-fenced account, usually at a third-party bank. Safeguarding protects you if the e-money firm itself goes bust - the money is not theirs to lose - but it is not the FSCS deposit guarantee. There is no fixed compensation cap, recovery can be slower, and you are exposed to the mechanics of how the safeguarding account is held.

For most small businesses keeping a modest float, safeguarding is fine in practice. But if you routinely hold tens of thousands - a tax pot, a VAT reserve, retained profit - the FSCS guarantee of a licensed bank is worth choosing on purpose. Our guides on how FSCS protection works and how it compares to deposit insurance elsewhere go deeper. The honest rule of thumb: keep large balances in an FSCS-protected account, and never assume an app that looks like a bank actually is one - check the small print for the words 'electronic money' or 'safeguarded'.

The honest answer depends on your business structure, and the top results blur this badly.

If you are a sole trader, you are not legally required to open a separate business bank account. You and the business are the same legal entity for tax purposes, so HMRC does not mandate a dedicated account. You could run everything through a personal current account - except most personal account terms and conditions prohibit business use, so you risk having the account frozen or closed. The practical move is a free business account (Tide, Starling, Mettle and Monzo Lite all cost nothing) purely to keep your business money cleanly separated from your personal spending. That separation makes your self-assessment tax return far less painful and gives you a clean audit trail. See our guide to sole trader cash management for how to structure the pots.

If you run a limited company, the rules are stricter. A limited company is a separate legal entity, its money is not your money, and you must keep company finances entirely separate. In practice that means a dedicated business bank account is effectively required - you cannot legally run company income and expenses through your personal account. Every provider on this list offers a limited company account.

So the split is: sole traders should open a free business account for the practical and tax-admin benefits; limited companies must. Either way, free is the default - there is no reason for a small business to pay a monthly fee in 2026.

Here is the maths no comparison table connects up. Two accounts on this list bundle FreeAgent, a full accounting package, completely free: Mettle and the NatWest/RBS business accounts (the same is true of Royal Bank of Scotland and Ulster Bank, which sit in the same banking group).

FreeAgent handles invoicing, expense tracking, VAT, Self Assessment and Making Tax Digital filing. Bought directly it costs in the region of £150 to £400 a year depending on your structure. A comparable Xero or QuickBooks subscription runs to roughly £180 to £400 a year too. So choosing Mettle or NatWest does not just save you the monthly banking fee a high-street account would charge - it nets off a couple of hundred pounds of software cost as well.

That is why our pick leads with the Mettle plus free FreeAgent stack: it is the lowest genuine total cost of running the banking-and-accounting side of a small business, not just the cheapest account in isolation. The one string attached on both Mettle and NatWest is that FreeAgent stays free only while the account is active and you make at least one transaction a month, so do not open the account and then leave it dormant. If you would rather keep banking and accounting separate, that is a legitimate choice - but you should make it knowing you are leaving a couple of hundred pounds a year on the table.