Business Bank Accounts UK — What Sole Traders and Small Companies Actually Need in 2026

This is the first question worth asking, and the answer is more nuanced than most guides admit.

If you run a limited company, the answer is straightforward: yes, you legally need a separate business bank account. Your company is a distinct legal entity from you, and mixing personal and company money is a fast track to problems with Companies House and HMRC. Company money is not your money until you formally extract it as salary or dividends. End of discussion. (gov.uk — Set up a business)

If you're a sole trader, the picture is different. There's no legal requirement to have a separate business account. HMRC strongly recommends it — and I'd echo that recommendation — but you won't get fined for running business transactions through your personal current account. The issue is practical: when your self-assessment deadline rolls around on 31 January, you'll want clean records. Scrolling through twelve months of mixed personal and business transactions trying to identify deductible expenses is a miserable way to spend a Sunday.

So even though it's not legally required, treat a separate account as the bare minimum of financial hygiene. The real question isn't whether to get one — it's how much you should pay for the privilege.

Here's the thing that gets overlooked: some personal current accounts explicitly allow sole trader use. Starling's personal account, for instance, lets you receive business payments. But there are limits to this approach, and once you're invoicing regularly or dealing with VAT (the registration threshold sits at £90,000 from April 2024), a dedicated business account with proper categorisation and accounting software integration saves real time.

For a deeper look at this area, read our guide to Making Tax Digital Launches in Weeks.

Strip away the marketing and a small business bank account needs to do five things well:

1. Receive payments — faster payments, BACS, and ideally Direct Debits
2. Make payments — standing orders, bank transfers, and a debit card
3. Categorise transactions — or at least export cleanly to accounting software
4. Provide FSCS protection — your deposits are covered up to £120,000 per person per bank since the limit increased in December 2025
5. Integrate with accounting tools — Xero, FreeAgent, or QuickBooks

That's genuinely it for most sole traders and small limited companies. If you're not doing international transfers regularly, don't need a credit facility, and aren't processing card payments through a terminal, you can stop there.

The problem is that traditional banks bundle all sorts of extras into their business accounts — overdraft facilities you haven't asked for, cheque books nobody uses, branch counter services — and then charge you a monthly fee for the bundle. It's like buying a Swiss Army knife when all you needed was a butter knife.

That chart tells you something important: the free tier is no longer a compromise. Digital-first banks aren't offering stripped-down accounts as loss leaders — they're offering genuinely capable business banking at no monthly cost. The high street banks have responded by introducing their own free or low-cost digital options (HSBC Kinetic, NatWest's Mettle), which rather proves the point that the £8/month was never really justified for basic banking.

Monthly fees get all the attention in comparison articles, but they're often the smaller part of the bill. Transaction charges are where traditional business accounts quietly drain your money.

High street banks typically charge per transaction: 20p-40p for automated credits, 40p-90p for debit card payments, and sometimes a percentage on cash deposits. If you're a tradesperson depositing cash regularly, or a small retailer, these charges compound fast. A plumber receiving 50 bank transfers a month and making 30 payments could face £30-40 in transaction charges on top of the monthly fee.

Digital banks have largely eliminated per-transaction charges for electronic payments. Starling Business, for example, charges nothing for UK transfers in or out. Where they do charge is on cash deposits (Starling charges 0.7% at the Post Office) and international transfers — which is fair enough, since these genuinely cost money to process.

Those numbers should give any small business owner pause. Over a year, the difference between a free digital account and a traditional business account can easily reach £300-400. That's not transformative money, but it's not nothing either — especially in the early years when every pound counts.

One caveat worth flagging: if you deal heavily in cash, the calculation shifts. Digital banks' cash deposit fees can mount up, and some traditional accounts include cash deposit allowances in their monthly fee. Know your own transaction patterns before deciding.

Having a separate business account doesn't change your tax position, but it makes managing it dramatically easier. As a sole trader, your business profits form part of your personal income and are taxed accordingly — the personal allowance remains frozen at £12,570, with 20% basic rate applying on income from £12,571 to £50,270.

With the Bank of England base rate at 3.75% since December 2025, some business accounts now pay meaningful interest on balances. If you're holding a VAT float or building up a tax reserve (and you should be setting aside roughly 30% of profits for tax if you're a basic rate taxpayer), earning interest on that money is sensible. Starling Business pays interest on balances, which is unusual for a free business account.

For limited companies, the tax picture is different. Corporation tax runs at 19% on profits under £50,000 (the small profits rate) and 25% on profits over £250,000, with marginal relief in between. Company money sitting in a business account earning interest is taxable as company income — but it's still better than earning nothing.

A word on the practical side: come January, when you're staring down your self-assessment deadline, a clean business account feed that plugs directly into FreeAgent or Xero is worth its weight in gold. If your bank transactions are mixed in with Deliveroo orders and Spotify subscriptions, you're making your accountant's life harder — and if you're doing your own return, you're making your own life harder. For more on managing your tax obligations effectively, the tax hub has detailed guides.

A quick disclaimer: I'm not a financial adviser, and this isn't personalised financial advice. Tax rules change, individual circumstances vary, and if you're unsure about anything, speak to a qualified accountant. What I can do is lay out the landscape clearly so you're asking the right questions.

After spending far too long comparing business bank accounts, here's my honest take: start with a free digital business account. Starling Business and Mettle (backed by NatWest) are the strongest options in early 2026. Both offer fee-free UK transactions, accounting software integration, and proper FSCS protection up to £120,000.

If you're a sole trader doing under £90,000 turnover with no employees, a free account will cover you completely. You don't need an overdraft facility you'll pay 15-19% EAR on, you don't need a relationship manager, and you definitely don't need a chequebook.

If you're a limited company with employees, regular international payments, or complex invoicing needs, you might genuinely benefit from a paid tier — Tide Plus or Monzo Business Pro add features like automated invoicing and multi-user access that justify their cost. But start free and upgrade only when you hit a concrete limitation, not because a comparison site (which earns commission on paid account referrals, by the way) told you that you need premium features.

For a broader look at how digital banks like Starling, Monzo, and Revolut compare on personal banking, or if you want to understand how different types of current accounts work, those guides go deeper on the consumer side. And if your business account is building up a healthy balance, it's worth understanding high-interest current accounts and the options in our savings hub to make that cash work harder.

The banks hub pulls together all our banking coverage if you want the full picture.