Prenups When One Partner Has More Assets
Financial imbalance is common. A good agreement gives both partners clarity — not just the wealthier one.
Asset imbalance is the most common reason couples consider a BFA
When one partner has significantly more assets than the other — a property, savings, a business, an inheritance — it is natural to think about what happens to those assets if the relationship ends. This is the most common trigger for a financial agreement in Australia.
But the framing matters. A financial agreement in this context is not about the wealthier partner protecting themselves from their partner. It is about both partners agreeing to a clear, fair outcome — documented properly and with independent advice for each person.
The agreement protects both partners
This is worth emphasising. A financial agreement benefits both partners, not just the one with more assets.
The wealthier partner gains certainty that their pre-relationship assets will not be drawn into a property pool they never intended to share. But the other partner also gains something important: clarity. They know exactly what they are agreeing to. They have had independent legal advice explaining it. There are no surprises.
An agreement where one partner genuinely understands and accepts the terms — having received real legal advice — is a fairer outcome than no agreement at all, where everything is uncertain.
The role of independent legal advice
When there is a significant asset difference, independent legal advice for the less wealthy partner is especially important. Their lawyer's role is to ensure they genuinely understand what they are agreeing to — particularly what they may be waiving in terms of future property claims.
This is not a rubber stamp. The lawyer should review the agreement carefully, explain the effect on their client's entitlements, and advise them of any concerns. If the lawyer has significant concerns about the fairness of the agreement, they should raise them.
This is one reason the independent legal advice requirement exists: to protect the party with less financial knowledge or fewer assets from signing an agreement they do not fully understand.
Timing and process
When there is a significant asset difference, timing is even more important than in a more balanced situation. Presenting an agreement close to the wedding — when the less wealthy partner may feel they cannot say no without jeopardising the relationship — creates legal vulnerability and is genuinely unfair.
A financial agreement prepared well before the wedding, with adequate time for both partners to review it, seek their own advice, and raise concerns, is both legally stronger and ethically sounder.
What the agreement typically covers
In situations with asset imbalance, a financial agreement typically:
• Documents the wealthier partner's pre-relationship assets as separate property • Addresses how assets acquired during the relationship will be treated • May acknowledge the other partner's non-financial contributions — homemaking, career sacrifices — and how those are taken into account • Sets out what each partner would receive on separation
The specific terms depend on the couple's circumstances and what both partners genuinely agree to after receiving independent advice. There is no standard formula — the goal is a documented agreement that both parties have truly understood and accepted.