Daily Junction.mobi portalBusiness · August 12, 2023 · Marcus Vale · 6 min
A business partnership is a structure where two or more people run a business together and share its profits. This UK guide explains how partnerships work, the tax treatment, liability, and why a partnership agreement matters.
Going into business with someone else is one of the most natural ways to start out — two heads, two sets of skills, shared risk and shared reward. The simplest legal form for doing so in the UK is the business partnership. It is cheap to set up, light on paperwork, and gives the partners a great deal of freedom. But that freedom comes with a serious catch: in an ordinary partnership, the partners are personally on the hook for the business's debts, including those run up by each other. This guide explains how partnerships work, how they are taxed, where the risks lie, and why a written agreement is so important. This is general information, not legal or tax advice.
A business partnership is a structure in which two or more people run a business together and share its profits. The partners jointly own and manage the business. There is no separate legal entity standing between them and the business — in an ordinary partnership, the partners are the business, in much the same way a sole trader is their business, just with more than one person involved.
This is the most common form, the ordinary (general) partnership. There are also variations:
Unless people specifically set up an LLP or a limited partnership, "partnership" usually means an ordinary one — and that is the focus here.
A partnership has an unusual tax treatment that often surprises people: the partnership itself pays no tax. It is tax-transparent. Instead, the profits are divided between the partners according to their agreement, and each partner is taxed individually on their own share.
In practice this means:
So a partner is taxed much like a self-employed individual. Each one needs to register for Self Assessment, and one partner is usually nominated to handle the partnership's own return. Our guides to National Insurance and the Self Assessment tax return explain the personal side. This contrasts sharply with a limited company, which pays Corporation Tax in its own right before the owners are taxed on what they take out.
Because each partner is taxed on their share of profit — not on what they actually draw out of the business — partners can face a tax bill on money they have left in the business to fund its growth. Planning for that matters.
The defining risk of an ordinary partnership is unlimited, joint liability. Just as a sole trader is personally responsible for business debts, so is each partner — but with an added twist: partners are generally responsible for each other's business actions too.
This joint and several liability means:
This is a profound level of trust to place in someone, and it is the single biggest reason to choose partners carefully and to consider whether an LLP, which protects personal assets, would be safer. It is also why keeping the partnership's finances tightly controlled — the discipline behind good cash flow management — matters so much.
A partnership can technically exist with nothing in writing — but operating without a partnership agreement is a serious gamble. If there is no agreement, the Partnership Act 1890 supplies default rules, and those defaults are blunt. For example, the law presumes profits are split equally, regardless of how much money, time or expertise each partner contributed.
A good written agreement sets out the things people assume will never be a problem until they are:
The hardest moments in any partnership are departures and disputes, and these are precisely what an agreement protects against. Drafting one with a solicitor early — while everyone is on good terms — is far cheaper than untangling a dispute later, and is part of starting any venture properly, alongside the practical steps in our guide to how to start a business in the UK.
Setting up an ordinary partnership is refreshingly simple compared with forming a company. Broadly, you:
Unlike a limited company, there is no registration at Companies House for an ordinary partnership, and no public filing of accounts — which some people value for privacy and simplicity. You may also need to consider VAT registration if turnover crosses the threshold, and PAYE if you take on employees. The light setup is a genuine advantage; the trade-off is the unlimited liability that comes with it.
Choosing between structures comes down to your priorities:
Many partnerships eventually incorporate or convert to an LLP as they grow and the stakes rise. There is no universally right choice — it depends on risk, profit levels and how much administration you are willing to take on.
A business partnership is two or more people running a business together and sharing its profits. In an ordinary partnership the partners share unlimited, joint liability for the business's debts — including each other's — and each partner pays Income Tax and National Insurance on their share of profits, while the partnership itself pays no tax. Setting one up is simple and private, with no Companies House filing, but the liability risk is real. A written partnership agreement is essential to head off disputes over profits, departures and decision-making. Weigh a partnership against an LLP or a company, and treat GOV.UK and HMRC as the authoritative sources.
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