Yes. No law in England or Wales stops the two of you sitting down and writing your own prenuptial agreement, and there is no requirement to use a solicitor at all. But be clear about what you are trading for the money you save: a self-drafted agreement is materially weaker in court than one built with independent legal advice on each side, because that advice is one of the conditions a judge looks for when deciding how much weight to give it.
If you are searching for this, the honest read is that you are really asking a cost question. You want to know if there is a way to protect what you each bring into the marriage without paying two solicitors. There is a way to write the document yourselves. There is no way to skip legal advice and still get the same legal weight. Those are two different things, and worth separating before you decide.
What "writing your own" actually means legally
There is no rule that a prenup has to be drafted by a solicitor, notarised, or filed with any government body to exist. You can type an agreement, both sign it, and it is a document. The question that matters is not whether it exists, but whether an English or Welsh Family Court would give it weight if your marriage ends and one of you wants to enforce it, or the other wants to escape it.
That weight depends on the same four conditions covered in are prenups legally binding in the UK: full and frank financial disclosure, independent legal advice for each of you, no duress or undue pressure, and a fair outcome. Writing the document yourselves does not automatically fail any of these. In practice, it usually fails one of them by default: independent legal advice, because the whole point of doing it yourselves is skipping that step.
Why independent legal advice is the condition you cannot self-certify
The other three conditions are things you can genuinely do yourselves with care. You can exchange full statements of what you each own and owe. You can sign months before the wedding, with no pressure. You can aim for an outcome that treats you both fairly. None of that requires a law degree.
Independent legal advice is different, because it is not really about the advice itself. It is about proof, later, in front of a judge who was not there when you signed. A court that is deciding whether to hold you to a self-drafted agreement has to ask: did each of you actually understand what you were signing away? With a solicitor on each side, there is a professional whose job it was to check exactly that, and whose file can show it happened. Without one, there is only your word against your former partner's, at the exact moment you are least likely to agree on anything.
As one specialist family law site puts it plainly: "If you're writing your own prenup, the chances are that neither party has received this advice, which again could invalidate your agreement." Source: Divorce-Online, "Can You Write Your Own Prenup Without a Solicitor UK?"
The same source flags three concrete risks that follow from that gap:
Disclosure becomes unprovable. Even if you were completely honest with each other, there is no professional record that you actually laid out everything, so a court has less to go on than "you both say you did."
Terms can end up one-sided without either of you noticing. A solicitor's job includes catching a clause that looks fine to two people in love and looks very different to a judge years later.
Clauses you write can simply be unenforceable. Certain terms cannot bind a court at all no matter how carefully you word them (child arrangements, for instance), and a document written without legal knowledge is far more likely to lean on the terms that won't hold. We cover exactly which terms fall into that category in what cannot be included in a prenup in the UK.
The realistic middle ground
Full DIY, with zero legal involvement, is the weakest option. Full instruction, with a solicitor drafting from a blank page for each of you, is the strongest and the most expensive. There is a middle path worth knowing about: draft the substance together yourselves, working out what you actually want to agree, then bring that draft to a solicitor each for review and formal advice rather than drafting from scratch.
This does not remove the cost of independent legal advice, because that step is what gives the agreement its weight in the first place. It can reduce the drafting cost, since a solicitor reviewing and refining a document the two of you have already thought through is often quicker work than starting from nothing. Whether that actually saves you money, and by how much, depends on your solicitor's pricing structure: some charge a flat fee for the whole service regardless, some charge by the hour, which is where a shorter review genuinely costs less. We break down real, sourced price ranges for both routes in how much does a prenup cost in the UK.
What this middle path does not save you is the two-solicitor requirement itself. One of you cannot review the joint draft and advise the other; that reintroduces the exact problem independent advice exists to solve.
If you decide to go fully DIY anyway
Some couples decide the cost saving is worth the weaker legal position, particularly where the assets involved are modest and neither partner expects the agreement to ever be tested in court. If that is your decision, a few things reduce the damage, even though none of them fully replace legal advice:
Put full disclosure in writing, with actual numbers. Not "we told each other everything," but attached schedules listing what you each own, what you each owe, and the approximate value of each item, dated and signed.
Sign it months before the wedding, not days. This is the one condition a court can check from the calendar alone, and it costs nothing to get right.
Keep it to financial terms only. Do not attempt to include anything about children, or anything designed to leave one of you dependent on the state after a divorce. Those clauses will not be enforced regardless of who drafted them, and including them can make the rest of the document look less serious to a court. See what cannot be included in a prenup in the UK for the full list.
Aim for an outcome that looks fair to a stranger, not just to you both today. A prenup that leaves one partner with very little, especially if children arrive later, is the version most likely to be set aside regardless of how it was drafted.
None of this makes a DIY agreement equivalent to one built with independent advice. It makes it less likely to fail on the conditions within your control, while accepting that the advice condition will not be met.
Ana and Rafael, two ways this could go
Ana and Rafael are getting married and want to protect the flat Rafael inherited before they met. Money is tight after the deposit on their own place, and the quoted solicitor cost for full drafting on both sides gives them pause.
The version that holds up in principle: they draft the agreement themselves over a few evenings, listing exactly what each of them owns, including Rafael's flat and its remaining mortgage, and Ana's savings and pension. They agree the flat and anything either of them owned before the marriage stays theirs individually; anything built together during the marriage is shared. They then take that draft to a solicitor each, not to start again, but to review it, confirm it says what they intend, and formally advise each of them separately. It costs less than drafting from nothing for both of them, but it still meets all four conditions, including independent advice.
The version that is far weaker: they write the same agreement, print two copies, and sign them at the kitchen table with no solicitor involved at all, to avoid the cost entirely. Nothing about the substance of the agreement changed. What changed is that if the marriage ends and Ana later argues she never really understood what she gave up, there is no professional record to show otherwise, and a court has much less reason to hold her to it. The document may still be considered, but as one factor among many rather than something the court starts from.
Same intentions, same numbers, very different legal footing.
Common mistakes
Believing a signed document is automatically a binding prenup. Signing is the easy part. Meeting the four conditions is what actually matters.
Using a free online template as if it were legal advice. A template can structure your thinking. It cannot advise either of you on your specific circumstances, which is what the independent advice condition is actually looking for.
One partner "reviewing" for both of you. This defeats the purpose of independent advice as thoroughly as no advice at all. Each of you needs your own solicitor, not a shared one.
Skipping legal advice on complex assets specifically to save money. DIY is riskiest exactly where the stakes are highest: a business, a foreign property, a trust. Simple, modest finances are where the DIY route does the least damage if it is later challenged.
Assuming the middle path (drafting together, then reviewing separately) is free. It is usually cheaper than full drafting from scratch, not free. Independent advice for two people is still two solicitors.
Where this leaves the two of you
Writing a prenup yourselves is genuinely possible and, for some couples with straightforward finances, might be a reasonable trade-off. What it is not is a way to get the same legal protection as a properly advised agreement for free. Go in knowing which one you are choosing.
Whichever route you take, the groundwork is the same: an honest, complete list of what you each own and owe, agreed together rather than assembled in a rush. That is also the ongoing work of managing money as a couple after the wedding, not just before it. eziduo keeps that shared financial picture updated as your life together changes, rather than something you only pull together once, under pressure, in the run-up to a wedding.
This article is informational and does not replace independent legal advice from a solicitor. eziduo is not a law firm. The whole point of this article is that independent legal advice is one of the conditions that gives a prenup weight, so speaking to a solicitor, even for a shorter review rather than full drafting, is the one step this article cannot substitute for.
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