Why partnership matters to a first-time founder
If you run a business with someone and share the profits without forming a company, UK law and that of many other countries may treat you as a legal partnership. Each partner can then be personally liable for the business’s debts and can bind the others to contracts. A commercial deal labelled a partnership does not create this on its own, but the way you actually work together can.
Examples of partnership
A startup and an accountancy firm might verbally agree, or sign a letter of intent, to refer customers and test an integration. People commonly call that a partnership even when they do not jointly own a business. Separately, two people who carry on a business together and share its profits may create a legal partnership through their agreement or conduct.
Common misunderstanding
People assume an informal or verbal arrangement has no legal effect, or that calling a deal a partnership automatically creates shared ownership. Neither is safe. A letter of intent may only record a proposed collaboration, while conduct can sometimes create legal obligations the parties did not expect. The agreement, conduct, form, and jurisdiction matter.
When to use it
Use the word freely for collaboration, but specify the arrangement when money, ownership, liability, data, or customers are involved. Write down what each party contributes, receives, and can end. Get local advice if the relationship could amount to a legal partnership.