Jasmine Birtles
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What Can Be Included in a Prenup? A Practical Guide
Moneymagpie Team
24th Jun 2026
The word prenup still carries a lot of baggage. Many people assume prenuptial agreements are only for the wealthy or that suggesting one signals a lack of trust. In reality, a prenup is simply a financial planning tool, a way for two people to set clear expectations about money and property before they marry. Far from being cynical, it can encourage honest conversations and protect both partners. If you are curious about how prenups actually work, the most useful starting point is understanding what they can and cannot cover. Here is a practical guide.
- What a Prenup Is
- What You Can Include
- What You Generally Cannot Include
- Making a Prenup Valid
- Is a Prenup Right for You?
What a Prenup Is
A prenuptial agreement is a legal contract entered into by a couple before marriage. It sets out how finances, property, and debts will be handled during the relationship and, importantly, how they would be divided if the marriage were to end. The goal is to replace uncertainty with clarity, so both partners know where they stand rather than leaving everything to default laws and potential disputes.
Crucially, a prenup is a customizable tool. It can be as simple or as detailed as a couple’s situation requires, which is why understanding the range of options is so helpful. Thinking it through in advance allows couples to design an agreement that genuinely reflects their circumstances and shared goals.
What You Can Include
The heart of any prenup is its financial terms, and knowing what can be included in a prenup helps couples build an agreement that fits their lives. Common inclusions are the division of property and assets such as real estate, savings, and investments, the treatment of debts each partner brings in or takes on, and how business ownership will be handled if one or both partners run a company.
Prenups frequently address spousal support, clarifying whether and how support would be paid if the relationship ends. They can also protect inheritances and coordinate with estate planning, which is especially valuable in blended families or where significant family assets are involved. Retirement savings and pensions, often among the most valuable and contested assets, can be addressed too. By spelling these things out, couples reduce the risk of conflict later.
What You Generally Cannot Include
Just as important as what a prenup can cover is what it cannot. In most jurisdictions, a prenup cannot determine child custody or child support. Courts treat the best interests of any children as paramount and decide these matters at the time of separation, not in advance through a private contract.
Agreements also cannot contain terms that are illegal, grossly unfair, or contrary to public policy. Personal lifestyle clauses, such as rules about household chores, and clauses tied to fidelity are generally unenforceable as well. Attempting to include such provisions can, in some cases, weaken the agreement as a whole, so a sensible prenup sticks to legitimate financial and property matters.
Making a Prenup Valid
For a prenup to hold up, it must meet certain legal standards, and this is where care really matters. The Legal Information Institute at Cornell describes a prenuptial agreement as a contract made before marriage that typically addresses the division of property and spousal support, and notes that enforceability depends on factors like fairness and proper disclosure.
In practice, validity usually requires the agreement to be in writing, signed voluntarily by both parties, and supported by full and honest financial disclosure. Many couples are encouraged, and in some places required, to obtain independent legal advice. It is worth stressing that the specific rules differ significantly from one country and region to another, so this is general information rather than legal advice, and confirming the requirements where you live is essential.
Is a Prenup Right for You?
Prenups are not only for the rich. They can benefit anyone who brings assets, debts, a business, or children from a previous relationship into a marriage, as well as couples who simply value transparency. The process of creating one encourages open discussion about money and expectations, which can strengthen a relationship rather than strain it.
Ultimately, the decision is personal. For some couples, the peace of mind and clarity a prenup provides are well worth the effort. For others, default laws may already suit their situation. Either way, understanding what a prenup can include puts you in a far better position to make an informed choice with your partner.
A prenuptial agreement is best understood not as a sign of doubt but as a practical tool for clarity, fairness, and financial planning. It can address property, debts, support, business interests, and inheritance, while leaving matters like child custody to the courts. Because the rules vary by jurisdiction, anyone considering a prenup should treat guides like this as a starting point and seek qualified legal advice in their own area before drafting an agreement. Approached thoughtfully, a prenup is simply two people planning their future together with open eyes.
Disclaimer: MoneyMagpie is not a licensed financial advisor and therefore information found here including opinions, commentary, suggestions or strategies are for informational, entertainment or educational purposes only. This should not be considered as financial advice. Anyone thinking of investing should conduct their own due diligence.
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