The short version
- A UK sole trader is not legally required to have a separate business bank account - an ordinary personal current account can, strictly speaking, be used to run a shop.
- A limited company genuinely is required to keep its own account - it is a separate legal entity, and the money it makes is legally the company's, not the director's personally.
- The real, easy-to-miss catch for a sole trader is the bank's own terms, not the law - many personal account terms specifically prohibit using them for business trading.
- FSCS deposit protection applies the same way to a sole trader's business money as to personal savings - currently £120,000 per person per banking group, not a separate, additional allowance just for being in business.
- None of this is about which is technically permitted - it is about which one actually makes running the shop, and proving its numbers later, genuinely easier.
The legal answer, stated plainly
Checked directly on 27 September 2026: a UK sole trader has no legal obligation to open a business bank account - HMRC does not require one, and an ordinary personal current account can, in principle, be used to receive sales income and pay business costs. This is genuinely different for a limited company, which is legally required to keep its finances separate through its own dedicated account, precisely because a limited company is its own legal entity - the money it makes belongs to the company, not personally to whoever runs it, and the two are not allowed to blur together the way a sole trader's business and personal finances legally can.
The catch that actually matters more than the law
The detail worth knowing specifically: many personal bank accounts' own terms and conditions explicitly prohibit using them for business trading, entirely independent of what the law itself requires. A bank noticing genuine commercial activity running through an account opened and marketed as personal can, under its own terms, restrict or close it - not a legal penalty, but a real, practical risk sitting underneath the "technically allowed" answer above. Checking a specific account's own terms before running a genuine trading business through it is worth doing precisely because this is a contractual question, not a legal one, and easy to overlook for exactly that reason.
What deposit protection actually looks like either way
It is worth knowing that money held in a UK bank, building society or credit union is protected under the Financial Services Compensation Scheme regardless of whether it sits in a personal or a business current account - the FSCS's own protection checker confirms the current limit is £120,000 per person per authorised firm, and that a sole trader is specifically entitled to the same £120,000 protection as an individual account holder. This is not a separate, additional allowance stacked on top of personal protection simply for being in business - a sole trader holding both a personal account and a shop-only account at the exact same banking group has their combined balance across both protected up to the same single £120,000 ceiling, not £120,000 twice over. Spreading genuinely large balances across more than one separate banking group, rather than assumed automatically safe within a single institution simply because two different account numbers are involved, is worth knowing about directly once a shop's own working capital starts to genuinely approach that figure.
Why a separate account is still worth having regardless
Setting the legal and contractual questions aside, a dedicated account - business or simply a second personal account used only for the shop - makes keeping an accurate record of money in and money out genuinely easier, precisely because nothing personal ever needs separating out of it after the fact. A single account mixing a weekly shop, a wage, and eBay sales together turns an ordinary bank statement into a puzzle every time a real total is needed; a dedicated account turns the same statement into something close to the record itself.
When the answer tips more firmly toward "yes, get one"
The honest calculation changes as a shop grows: a genuinely small, occasional side income running through a personal account is a much smaller practical risk than a shop processing dozens of orders a week, where the volume of transactions itself makes a bank's own commercial-use terms far more likely to actually be noticed, and where the bookkeeping cost of untangling personal and business activity grows right alongside the transaction count. There is no single revenue figure that flips the answer - it is a gradual shift in both risk and practical convenience, worth revisiting rather than assumed to be settled once at the very start.
What actually matters when picking one
For a sole trader who decides a dedicated account is worth having, the honest requirements are modest: something that keeps business money cleanly separate, offers reasonable transaction limits for genuine trading volume, and does not cost more than the actual convenience is worth for a shop's own size. A full business banking product with features built for a much larger operation is not automatically the right choice over a simple second personal account used only for the shop - the goal is separation and clarity, not a specific product category chosen for its own sake.
Worth checking the same thing you'd check for any financial provider
Whether choosing a traditional bank or one of the newer, app-based business account providers, it is worth checking that the provider is genuinely authorised, either as a bank offering the full deposit protection described above, or as an authorised payment or e-money institution, which typically holds customer funds differently and does not carry the same FSCS deposit protection - the FCA's own Financial Services Register confirms exactly which category a specific provider actually falls into. This is worth two minutes of checking before moving a genuinely meaningful amount of working capital into any new provider, rather than assumed to be equivalent to a traditional bank account purely because it looks, and functions day to day, exactly like one - the distinction rarely matters for ordinary day-to-day trading, but it matters considerably more the moment a real, sizeable balance is sitting there and something goes wrong with the provider itself.
What actually changes once the shop is run through a limited company
Once a shop is incorporated, the account question stops being a matter of judgement entirely - a limited company is legally required to keep its own business account, separate from any director's personal finances, because the company's own money is legally the company's, not the director's, regardless of who actually founded and runs it. This is worth knowing plainly as one of the genuine, non-optional pieces of admin that comes with incorporating, distinct from the tax comparison itself - a sole trader weighing whether to become a limited company is not just weighing a tax and liability question, but also picking up this specific, mandatory requirement, and the modest extra admin of maintaining a genuinely separate account, as part of that same overall decision.
Whether it's worth switching an existing personal account, or simply opening a new one
For a sole trader who has been running a shop through an ordinary personal account and decides the time has come for something dedicated, opening a genuinely new account specifically for the business is usually simpler and cleaner than attempting to convert an existing personal one, which can involve its own paperwork and does not always fully separate historic transactions from the point of switch onward. Starting fresh with a new account, and simply directing all new sales income and business costs through it from a clear, specific date, gives a clean, unambiguous line in the bookkeeping - everything before that date reconstructed once, carefully, from the old statement, and everything after it already properly and permanently separated from day one onward without ever needing to be untangled again.
Why an e-money account isn't left with no protection at all, just a different kind
It is worth being fair to the newer, app-based providers rather than leaving the impression that an e-money or payment institution account carries no protection at all simply because it lacks FSCS deposit cover - the FCA's own guidance on safeguarding requirements confirms these institutions are legally required to protect customer funds through a mechanism called safeguarding: keeping customer money segregated from the firm's own funds, or covering it with an insurance policy or comparable guarantee, specifically so customers can be repaid if the firm itself fails. This is a genuinely different mechanism from FSCS deposit protection, with its own specific rules rather than a fixed compensation limit, and it is worth understanding as a real, distinct form of protection in its own right - not simply "less protected" than a bank account, but protected differently, through segregation rather than a government-backed compensation scheme.
A worked example
A sole trader running eBay sales through their everyday personal account: legally permitted, and technically workable, provided the bank's own terms do not object - but every bookkeeping session starts with picking eBay payouts and supplier payments out of a statement also containing groceries, a mortgage payment and a friend's repaid loan. The same shop run through even a simple second account used only for the business: every line on the statement is already a business line, and a real profit figure for a given month is close to reading the account balance directly, rather than reconstructing it by hand each time.
Where Sellhelm actually fits
Sellhelm's own Finances page keeps sales and costs organised regardless of which account they actually moved through - a dedicated account makes the underlying bank statement easier to reconcile against that record, though the record itself stays useful either way, provided the discipline of logging every transaction accurately is kept up in the first place, whichever specific account or provider that money actually happens to sit with day to day.
Questions people ask
Is a business bank account legally required for a UK sole trader?
No. HMRC does not require one, and an ordinary personal current account can, in principle, be used - though its own terms and conditions might not actually permit business trading.
Does a limited company need a separate bank account?
Yes - a limited company is legally required to keep its own account, because it is a separate legal entity from its director, and the money it makes belongs to the company itself.
Can my bank close my personal account if I use it for my eBay shop?
Potentially - many personal account terms specifically prohibit business trading, and a bank noticing genuine commercial activity can restrict or close the account under those terms.
What is the actual practical benefit of a separate account?
It makes bookkeeping and Self Assessment noticeably easier, since business and personal money never need separating out of a mixed statement after the fact.