Opening your startup's business bank account: UK process, documents, and how to choose

The account is the foundation — get it right before you spend a penny

Everything in your startup's finances flows through one thing: the business bank account. Your accounting software reads from it, your VAT is calculated on it, your investors' money lands in it, and your runway is measured by it. Open the right account, in the right order, and the rest of your setup slots into place. Open it late — or worse, run the business through a personal account for a few months first — and you create a tangle that takes real work to undo.

So this is the second thing on your setup list, right after incorporating, and the first with a genuine lead time. Start it early, because you can't connect a bank feed, set opening balances, or reconcile anything until the account exists.

Why a dedicated business account isn't optional

If you're a limited company — which you are, if you've taken SEIS/EIS money or issued shares — the company is a separate legal person from you. Its money is not your money, and the law treats it that way. Running company spending through your personal account isn't just untidy; it blurs a line that HMRC, your accountant and your next investor all care about.

Practically, a dedicated account gives you three things you can't get otherwise: a clean, complete record of every business transaction in one place; a bank feed your accounting software can read automatically; and a clear separation that makes tax, VAT and diligence straightforward instead of a forensic exercise. The cost of not separating shows up later as reconstruction time and awkward questions. See why the separation matters so much in Just raised your first cheque? The 30-day setup checklist →.

What you'll need to open one

UK providers all run "Know Your Customer" and anti-money-laundering checks, so have these ready before you start — missing documents are the main reason applications stall:

• Your company details from Companies House — registration number, registered address, and incorporation date.
• ID and proof of address for every director — passport or driving licence, plus a recent utility bill or bank statement.
• Details of every "person with significant control" — anyone owning more than 25% of the company, who'll need to be identified too.
• A clear description of what the company does — providers ask this for their risk checks; a plain, honest sentence is fine.
• Sometimes a business plan or expected turnover — more common with high-street banks than app-first providers.

If your ownership is more complex — an investor holding company on the cap table, an overseas founder — expect a few more questions and allow extra time. Keeping your cap table clean from the start helps here too; see What is a cap table and how do I keep mine clean →.

How long it actually takes

Be realistic about timelines so you're not caught out. App-first providers can approve a clean application in a day or two — sometimes same-day — because verification is largely digital. High-street banks typically take one to three weeks, occasionally longer, because of manual underwriting and sometimes a branch appointment. If your structure is unusual or a check flags, any provider can take longer.

The practical lesson: start the application the same week you incorporate, before you have anything urgent to pay for. An account you don't yet need is far better than a supplier invoice you can't pay because the account isn't open.

Neobank or high-street bank? How to choose

There's no universally "best" account — there's the best fit for a newly funded startup. Here's an honest comparison of the two broad options.

App-first providers (Tide, Starling, Mercury, Revolut Business and similar). Fast to open, built for exactly your use case, and generally excellent at the thing that matters most for your books: clean, reliable bank feeds that your accounting software can read. Starling is a fully licensed UK bank with FSCS protection; Tide is an account provider partnered with a bank; Mercury is popular with startups that have US exposure or US investors. For most UK software startups, an app-first account is the path of least resistance — quick to open, easy to connect, low friction.

High-street banks (Barclays, HSBC, Lloyds, NatWest and others). Slower to open and often less slick digitally, but some founders value the relationship — particularly if you'll want debt, an overdraft, or specific sector expertise down the line. Some also bundle perks like free accounting software for a period. If a banking relationship is part of your longer-term plan, the extra setup time can be worth it.

Two things to weigh whichever way you lean. First, check FSCS protection — deposits with a fully licensed UK bank are protected up to the current limit; e-money and account providers hold your funds differently (often safeguarded rather than FSCS-protected), which matters when you're holding a whole round in one place. Second, check the account connects cleanly to your chosen accounting software — because a bank feed that drops out constantly undoes the whole point. The two decisions are linked, which is why we cover software selection alongside this in What to look for in accounting software as a funded UK startup →.

A sensible setup for a funded startup

For a typical UK software startup holding a fresh round, a common and sensible setup is: an app-first main account for day-to-day spending and the bank feed, a linked expense/debit card as the only way the company pays for things, and — if you're holding a large balance — a thought about spreading cash for protection or using an instant-access savings pot so idle runway earns a little. You don't need anything more elaborate at seed stage; one clean main account beats a clever structure you have to explain later.

Once it's open, connect it immediately

The moment the account is live, don't wait — connect it to your accounting software and set your opening position while everything is fresh and there are zero transactions to reconstruct. That sequence, done right, is what makes your first month reconcile cleanly instead of being a guess, and it's the subject of the next article: Align your bank account with your books from day one →.

Open early, keep it separate, pick the account that connects cleanly, and you've laid the foundation the rest of your finances sit on. It's an afternoon of admin that saves you months of untangling — do it first.

---

Once your account's open, Ledgers connects to it in a couple of clicks and starts doing the books for you — categorising every transaction, reconciling against the balance, and keeping VAT and payroll ready. Works with the app-first accounts UK startups actually use. Connect your account and see your numbers → free to try.

Next in this guide: Align your bank account with your books from day one →

Frequently asked questions

How long does it take to open a UK business bank account?

App-first providers can approve you in a day or two if your documents are clean; high-street banks often take one to three weeks because of manual checks and sometimes a branch appointment. Start the application the same week you incorporate so the account is ready before you need to spend.

What documents do I need to open a business account?

Typically your Companies House registration details, proof of ID and address for every director and anyone owning over 25% of the company, your business address, and a description of what the company does. Neobanks verify most of this digitally; high-street banks may ask for more.

Can I just use my personal account for the business?

For a limited company, no — the company is a separate legal entity and its money must be kept separate. Mixing personal and business money is the most common cause of messy startup books and a red flag in due diligence. Open a dedicated account before you spend the round.

See your numbers without learning accounting

Ledgers does the bookkeeping — bank feeds, VAT, year-end — and keeps your accountant in the loop. Free for pre-revenue founders.

Start free →

Get the next guide by email

Plain-English accounting for founders — a couple of new guides a week. No spam, unsubscribe anytime.

Subscribe

Keep reading · Just got funded: setting up

Just got funded: setting up

Just raised your first cheque? The 30-day finance setup checklist for UK startups

You've graduated the accelerator and the money's landed. Here's exactly what to set up in your first 30 days — bank account, accounting software, registrations and records — so your finances are right from day one.

9 min readJust got funded: setting up

Align your bank account with your books from day one: the setup sequence

The order you set things up decides whether your first month reconciles cleanly or becomes a guess. Here's the exact sequence — bank, feed, opening balances, first reconciliation — for a newly funded UK startup.

8 min readJust got funded: setting up

What to look for in accounting software as a funded UK startup

A funded startup needs things a freelancer doesn't — SEIS/EIS records, investor reporting, runway, multi-founder access. Here's the buyer's checklist for choosing accounting software after you raise, for UK startups.

8 min read