How much does a prenup cost in the UK? It varies enormously depending on how you have it prepared and how complex your finances are — from a fixed £199 with an online service to four figures with a solicitor. Below is a realistic, up-to-date picture of prenuptial agreement costs in England & Wales, what sits behind each price, and how to spend sensibly without cutting the corners that actually matter.
How much does a prenup cost — at a glance
| Route | Typical cost | Best for |
|---|---|---|
| Online service | From £199 (fixed) | Clear, straightforward finances |
| Online draft + solicitor advice | £199 + advice fee (a few hundred pounds each) | Most couples wanting advice affordably |
| Full solicitor-drafted | Four figures (often £1,000–£5,000+ per side) | Complex estates, trusts, heavy negotiation |
Those bands are the whole story in one table — but the right choice depends on your finances, not just the price. Here is what each route actually involves.
Solicitor-drafted prenups
Having a prenup drafted by a family-law solicitor traditionally costs four figures once everything is included, and that is usually per side rather than for the couple. A typical engagement involves the solicitor taking instructions, drafting the agreement, negotiating between the two partners' solicitors, and providing separate independent legal advice for each person. Fees rise with the complexity of the assets involved — businesses, trusts, overseas property and pensions all add time, and every round of negotiation adds more. For genuinely complex estates this is money well spent; for straightforward finances it can be far more than the job requires. See how much solicitors charge for a prenup, and how the online and solicitor routes compare.
Online prenuptial agreements
Online services have made prenups far more accessible. With UK Prenup, couples in England & Wales can create a comprehensive, professionally structured agreement online for a one-off £199, with the document generated instantly as a PDF. You answer guided questions about both partners' finances and wishes — property, savings, pensions, businesses, debts and how you want assets treated — and the agreement is produced ready to review and sign. The fixed fee is the whole cost of the document; there is no hourly billing and no surprise at the end. For couples with clear finances, this is often all they need; for those who want a lawyer's eyes on it, it is an inexpensive foundation to take to advice.
Wondering whether it is worth it? For most couples a prenup is far cheaper than a contested divorce. Just be wary of a bargain-basement prenup, a DIY template, or a "poor man's prenup" that cuts the corners — disclosure, fair terms, correct signing — that make an agreement hold up.
The best-value approach for most couples
You do not have to choose between "cheap and risky" and "expensive and thorough". Many couples get the best of both by drafting the agreement online for £199 and then each taking independent legal advice on the finished document. Because the drafting is already done, the solicitor's job is to advise rather than build from scratch — which costs a fraction of a full bespoke engagement while still ticking the independent-advice box that makes an agreement more robust. It keeps the total well below a traditional two-solicitor process without sacrificing the safeguards that matter.
What affects the price?
- Complexity — straightforward finances cost less than businesses, trusts, pensions or overseas assets.
- Negotiation — back-and-forth between solicitors is where traditional fees climb; an agreement you broadly agree in advance costs less to finalise.
- Independent legal advice — sensible for both partners, and usually charged separately per person (see do both need a lawyer?).
- How you draft it — a fixed-fee online document removes the open-ended hourly billing that makes solicitor costs hard to predict.
Should you still take legal advice?
Yes. Whichever route you choose, independent legal advice for each partner is one of the factors that makes a prenup more likely to be upheld (see are prenups legally binding? and independent legal advice for a prenup). An online service keeps the drafting cost low; you can then have each partner review the finished agreement with a solicitor for far less than a full bespoke drafting engagement.
Prenup cost FAQs
How much does a prenup cost in the UK on average?
There is no single figure: online agreements start from £199, while solicitor-led agreements usually run into four figures per side once both partners take advice.
Why are solicitor prenups so much more expensive?
They are usually billed by the hour and involve drafting, negotiation between two firms and separate advice for each partner (see solicitor prenup costs).
Is a prenup cheaper than a divorce?
Almost always — a contested divorce can cost many thousands of pounds in legal fees alone (see is a prenup cheaper than a divorce? and the cost of divorce in the UK).
Is a cheap or DIY prenup worth it?
Be careful — a bargain-basement or DIY prenup that skips disclosure or fair terms can be worse than none at all.
Does a prenup cost the same as a postnup?
Broadly yes — a postnup costs much the same, from £199 online to four figures via a solicitor.
Are there any ongoing costs after signing?
No — a prenup is a one-off cost. You may choose to update it later (for example under a review clause), but there is no annual fee.
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.