Few legal documents attract as many myths as the prenup. Half-truths and outdated ideas put couples off making an agreement that would genuinely help them — or lull others into a false sense of security. Let us set ten of the most common ones straight, with the facts on how prenups actually work in England & Wales.
1. "Prenups aren’t valid in the UK"
They are not automatically binding, but a fair one made properly is given significant weight and is usually followed (see are prenups legally binding? and do prenups work?).
2. "They’re only for the rich"
Anyone with a property, savings, a business, a pension or an inheritance to protect can benefit (see who should consider one).
3. "A prenup means you expect to divorce"
No more than insurance means you expect a disaster — it is sensible preparation (see does a prenup mean you expect divorce?).
4. "They’re unromantic"
An honest conversation about money and the future is an act of care, not coldness (see is a prenup unromantic?).
5. "A prenup can decide everything"
It cannot fix child arrangements or maintenance, and cannot leave a partner in need. Lifestyle clauses carry no legal weight either.
6. "You need to be wealthy to bother"
Online agreements start from a fixed fee, making them widely affordable (see prenup costs).
7. "Once signed, it’s set in stone"
You can update it with a postnup, and many include a review clause to revisit the terms as life changes.
8. "A template off the internet will do"
Generic templates often miss what makes a prenup hold up — proper disclosure and fair, tailored terms (see prenup templates: what to watch for and what to include).
9. "It’s only about protecting one partner"
A good prenup is fair to both — and is far more likely to be upheld for it (see a prenup fair to both partners).
10. "Prenups always favour the wealthier partner"
An agreement that leaves the other partner in need simply will not stand (see when is a prenup unfair?). Fairness is the whole point.
Bonus myths worth knowing about
A few more come up often. "You can backdate a prenup" — you cannot, and trying to would undermine it (see can a prenup be backdated?). "A prenup has to be notarised" — it does not; it is signed as a deed before a witness (see does a prenup need notarising?). And "a prenup expires after a few years" — it does not, unless it says so (see does a prenup expire?).
Myths about the process
Beyond myths about whether prenups work, there are stubborn myths about how you make one. "You must use an expensive solicitor for the whole thing" is one — in fact a fixed-fee online service can do the drafting, with independent advice layered on top far more cheaply (see online prenup vs solicitor). "It takes months and months" is another — the drafting is quick; what takes time is doing it early enough to avoid pressure (see how long does a prenup take?). "Both partners have to use the same lawyer" is not just a myth but the opposite of good practice: the whole point of separate advice is that each partner has someone independent looking after their interests. And "you have to sign it at a solicitor’s office" is wrong too — what matters is correct execution as a deed before a witness, wherever that happens.
The biggest prenup myth of all
If there is one prenup myth worth killing, it is that prenups are "not valid in the UK". They are not automatically binding, true — but a fair agreement made with disclosure, advice and good timing is given significant weight and is usually followed. Most of the other myths flow from that one misunderstanding: that prenups are only for the rich, that they mean you expect divorce, or that a template will do. None survives contact with how the law actually works.
Where these myths come from
It is worth understanding why so much misinformation sticks to prenups. Part of it is imported from American films and television, where prenups operate under different rules and are often portrayed as ruthless instruments of the wealthy (see UK vs US prenups). Part of it is historical: for most of the twentieth century prenups genuinely were unenforceable here, so "they don’t count in the UK" was once nearly true — it simply stopped being true after 2010 (see the history of prenups). And part of it is emotional: because the subject touches on divorce, people repeat reassuring or fatalistic half-truths rather than checking the facts. Knowing the origin of a myth makes it easier to set aside.
The myths that cut the other way
Not every myth makes people too cautious — some make them over-confident, which can be just as damaging. "We signed it, so it is watertight" is a dangerous assumption: signing is necessary but not sufficient, because a court can still adjust an agreement that is unfair or was made without the safeguards (see are prenups legally binding?). "A verbal agreement will do" is another — it will not; a prenup must be a written document, properly executed (see is a verbal prenup valid?). And "we can just sort out disclosure later" misunderstands how central full and frank disclosure is to the whole thing. Believing you are protected when you are not is worse than knowing you have work to do.
Replacing myth with method
The antidote to all of these is the same short checklist. A prenup that is made early, built on honest disclosure, reviewed with independent advice, kept fair to both partners, signed in good time and executed correctly as a deed is the kind courts respect. Everything else is noise. If you want to see how those principles translate into a real document, our guide to what to include in a prenup and a worked prenuptial agreement example show exactly what a sound agreement looks like.
Myths about who a prenup is for
A cluster of myths concerns who should even consider a prenup, and they put off exactly the people who would benefit. "Prenups are for celebrities and millionaires" ignores that a modest home, a pension or a small business is worth protecting at any level of wealth. "You only need one if you don’t trust your partner" gets it backwards — the most successful agreements are made by couples who trust each other enough to be completely open about money (see are prenups a red flag?). "It is only the richer partner who wants one" overlooks that a fair prenup protects the less wealthy partner too, by fixing clear provision. And "we are too young to bother" misses that younger couples often have the most future growth — earnings, inheritances, a business — to plan around (see prenups for young couples). None of these "who" myths survives a close look at real circumstances.
Myths that get the law half-right
The most persistent myths are the ones with a grain of truth, because they are the hardest to dislodge. "A prenup can be overturned" is half-right — an unfair or improperly made one can be, but a fair, well-made one usually is not (see can a prenup be overturned?). "The court can ignore a prenup" is similarly half-right — it retains the power to, but in practice rarely does so with a sound agreement. "A prenup can’t protect against everything" is true, but people wrongly conclude it protects against nothing. The accurate picture sits between the extremes: a prenup is neither a magic shield nor a worthless piece of paper, but a strong, persuasive document whose force depends entirely on how well it was made (see are prenups legally binding?). Holding that nuance in mind is the surest protection against every myth on this page.
Prenup myths: FAQs
Are prenups a waste of time in the UK?
No — a well-made one carries real weight (see do prenups work?).
Do prenups mean you expect to divorce?
No more than insurance means expecting disaster — it is sensible preparation.
Are prenups only for the wealthy?
No — protecting a home, pension, business or inheritance matters at any level of wealth (see do you need a prenup?).
Can a prenup control everything about a divorce?
No — it cannot decide children’s arrangements or leave a partner in need (see the needs principle).
Is a free prenup template just as good?
Usually not — templates tend to miss the safeguards a court looks for (see is a DIY prenup valid?).
Is it true a prenup has to be notarised?
No — that is a myth; a UK prenup is signed as a deed before a witness, not notarised (see does a prenup need notarising?).
Do prenups expire after a few years?
Not unless the agreement says so — there is no automatic expiry (see does a prenup expire?).
Can you backdate a prenup?
No — and trying to would undermine it entirely (see can a prenup be backdated?).
Create your prenuptial agreement online
UK Prenup lets couples in England & Wales create a clear, fair prenuptial agreement online from £199, with your document generated instantly as a PDF. See how it works or get started.
UK Prenup is not a law firm and does not provide legal advice. A prenuptial agreement in England & Wales is not automatically binding, and both partners should take independent legal advice before signing.