When you need one: If you have a lot more assets than your partner (a home, a business, big investments) or children from another relationship, you may prefer to keep your assets from becoming joint property.
When you don’t: If neither of you has any major assets, it’s likely not necessary to spend the money on a pre-nup. As you acquire joint assets and have kids, a pre-nup would soon be trumped by new shared commitments.
Top tip: Give yourselves ample time to agree on a pre-nup’s terms. This could take three to six months, so make sure you get it sorted out before booking the hall! You both need the opportunity to review the details with a lawyer, negotiate freely and still walk away if it comes to that. This won’t happen if you’ve got a tiered cake chilling, a cage full of doves waiting to be released and wedding guests about to arrive!