For a lot of first-time founders, the first money into the business doesn't come from a bank or an investor — it comes from a parent, a sibling, or a friend who believes in the idea and has some savings sitting around doing nothing. It's usually the easiest funding conversation a founder will ever have: no business plan, no credit check, no weeks of due diligence, sometimes not even an interest rate. That ease is exactly what makes it more dangerous than it looks.
Why it feels like free money
Bank finance comes with friction on purpose — forms, projections, security, a formal decision process — and every bit of that friction is a safeguard, forcing both sides to think clearly about what's being agreed before money changes hands. Family and friends funding skips all of it, because the relationship does the trust-building the paperwork would otherwise do. That's genuinely valuable when speed matters. It also means the two things that stop a lender relationship turning into a dispute — clear terms and a paper trail — are usually the first things left out entirely.
The gap between a gift, a loan and an investment
The single biggest source of family-and-friends money going wrong is that the person giving it and the person receiving it are quietly imagining a different kind of arrangement. Is it a gift, with no expectation of repayment at all? A loan, to be repaid on a schedule, with or without interest? Or an investment, buying a stake in the business with a share of any future upside? All three are legitimate. The problem is when one side assumes it's a loan being repaid on ordinary trading terms, and the other privately assumes it's really an investment that should share in the business's eventual success — and neither finds out until the business either struggles or succeeds.
Money from someone who loves you doesn't need a lower interest rate to be more expensive than a bank's. It needs one unclear conversation about what kind of money it actually was.
What happens when the business struggles
A bank that isn't repaid on schedule sends a formal notice and follows a process — unpleasant, but impersonal. A parent or friend who isn't repaid on schedule has to decide, every time it comes up, whether to raise it and risk the relationship, or say nothing and quietly resent it. That resentment doesn't stay contained to money; it leaks into family gatherings, into how a founder is spoken to, into decisions that have nothing to do with the business at all. The debt itself might be small. The damage to the relationship, left to fester because nobody wants an awkward conversation, is very often disproportionately large.
What happens when the business succeeds
Perhaps less obviously, success causes its own version of the same problem. If a friend put in early money on the informal understanding it was 'helping out', and the business later does very well, an unspoken feeling can grow that they should have shared more meaningfully in that success — even if nothing was ever promised. Founders who've been through this describe the same pattern: the friend never explicitly asks for more, but the relationship cools anyway, because an unspoken expectation went unmet on both sides. This is entirely avoidable, and only with a document written before the money moved.
A worked example: the same £20,000, three different ways
Say a parent puts £20,000 into a limited company. Structured as a loan at 5% over three years, the interest is £1,000 a year — and the company cannot simply hand that over. It has to deduct 20% income tax at source, which is £200, pay that to HMRC on a quarterly CT61 return, and give the lender the remaining £800. The lender then declares the gross £1,000 on their Self Assessment; a basic-rate taxpayer with a £1,000 personal savings allowance owes nothing further and reclaims the £200 already deducted. The company gets corporation tax relief on the £1,000 as a financing cost.
Structured as a gift, there is no interest and no CT61, and the thing to watch moves to inheritance tax. £3,000 of it falls inside the annual exemption. The remaining £17,000 is a potentially exempt transfer: it drops out of the parent's estate entirely if they live seven years, and counts against the £325,000 nil-rate band if they do not.
Structured as equity, £20,000 for 10% of the company means both sides have agreed — whether they said it out loud or not — that the business is worth £200,000. That number will be read back to you by the next investor who runs due diligence, so it is worth saying deliberately. Form SH01 goes to Companies House within a month of the shares being issued, and the shareholding is permanent unless someone buys it back.
Same £20,000, three entirely different sets of consequences for tax, for the business and for the relationship. That is the whole argument for having the awkward conversation before the money moves rather than after something has gone wrong.
What to actually put in writing
None of this requires solicitors and formal contracts for a modest sum between close family, though for anything substantial that's genuinely worth the cost. At minimum, put in writing what kind of money it is (gift, loan, or investment), the amount and, if it's a loan, the repayment schedule and whether any interest applies, and what happens if the business can't repay on schedule — a pause, a renegotiation, or something else agreed in advance rather than improvised under pressure. If it's framed as an investment, be explicit about what percentage it buys and whether that comes with any say in decisions, because 'a bit of the business' means nothing legally until it's actually defined.
The conversation that actually protects the relationship
The document matters less than having the conversation it forces you to have. Sitting down and asking directly — is this a gift you never expect back, a loan you expect repaid on a schedule, or money you want a stake for — feels transactional and slightly uncomfortable with someone you love. It is far less uncomfortable than the version of that conversation that happens two years later, after a missed repayment or an unspoken resentment has already done its damage. Treating family money with the same clarity as funding from an investor isn't cold. It's the thing that actually protects the relationship the money was never worth losing in the first place.
The bottom line
Family and friends funding can be exactly what it looks like: fast, flexible, low-pressure money from people who believe in you. It stays that way only when both sides are honest, early, about what kind of money it actually is. The businesses that come out the other side with the relationship intact aren't the ones that got lucky — they're the ones that had the slightly awkward conversation before the cheque was written, instead of after something went wrong.
One more thing worth doing
If the business goes on to raise proper investment or take on a bank facility later, it's worth revisiting the original family-and-friends arrangement at that point too, rather than letting it sit untouched in the background. An early, informal loan can complicate a later funding round if a new investor discovers an undocumented liability or an unclear equity promise nobody remembers agreeing to. Tidying it up — formally repaying it, converting it clearly, or simply confirming in writing that it was always a gift — before it becomes a due-diligence surprise is a small piece of admin that saves a much bigger headache later, and it's a conversation worth having with whoever lent the money just as much as with any lawyer involved in the new deal.
Common questions
Do I have to pay tax on money my parents lend or give the business?
The money itself is not taxable income either way, but what follows differs sharply. A gift to you personally sits outside income tax entirely; the point to watch is inheritance tax, since anything above the £3,000 annual exemption is a potentially exempt transfer that only falls out of the giver's estate if they survive seven years. A loan is not income either — but if a limited company pays interest on it, the company must deduct 20% income tax at source, pay that to HMRC and report it on a quarterly CT61 return. The lender then declares the gross interest on their Self Assessment and claims credit for the tax already deducted.
What happens to a family loan if the business fails?
If the loan was made to a limited company, the lender ranks as an unsecured creditor and in most insolvencies recovers nothing. That is the outcome nobody plans for and everybody should discuss upfront. If you trade as a sole trader or partnership, the debt is personally yours and survives the business closing entirely. And if you personally guaranteed a family loan to your company, that guarantee stands after liquidation exactly as a bank's would. Say all of this out loud before the money moves. A family member who has consciously accepted they might lose the lot reacts very differently from one who assumed it was safe because it was you.
Should family and friends money be a loan or shares?
A loan in most cases; shares only where the person genuinely wants to be an owner and understands what that means. A loan has a defined end — an amount, a schedule, and a point at which the relationship goes back to being just a relationship. Equity does not: it makes them a permanent shareholder with rights to information and votes, and any future investor will examine that shareholding during due diligence. Equity also demands a valuation, which is where family deals get uncomfortable, because £20,000 for 10% means you have both agreed the business is worth £200,000. If they want some upside, a modest interest rate is usually a much cleaner way to give it.
Do we need a written agreement for a small amount between family?
Yes, though for a modest sum one page beats a solicitor's draft. Write down the amount, the date, whether it is a gift, a loan or an investment, the repayment schedule and interest rate if it is a loan, and what happens if the business cannot pay on time. Both sign it and both keep a copy. That single page does two jobs: it settles what kind of money it was while everyone still agrees, and it gives you something to show a lender or investor later who asks about an undocumented £20,000 sitting in the accounts. For anything substantial, or where equity is involved, use a solicitor.
Can my family member charge interest, and will they pay tax on it?
Yes to both, and charging interest is often the cleanest way to make the arrangement feel fair to everyone. There is no legal minimum or maximum rate between private parties, though pitching it near what a savings account would pay keeps it defensible. If a limited company pays the interest, it deducts 20% income tax at source and pays that to HMRC through the CT61 return, handing the lender the net figure. The lender declares the gross interest on their tax return; a basic-rate taxpayer has a £1,000 personal savings allowance and a higher-rate taxpayer £500, so on modest sums they will usually reclaim the tax deducted rather than owe any more.
