Español
Marriage brings two lives together, along with two sets of finances, histories, and expectations. A postnuptial agreement gives you a clear, agreed plan for how property, debt, and support would be handled if your marriage ever ended, so those decisions are made calmly today instead of in the middle of a crisis later. It is a form of planning, not a sign of doubt.
At Weldon Law Group, PLLC, our Jacksonville family law attorneys help married couples across Northeast Florida put that clarity in writing. Attorney Ian Weldon and our legal team draft agreements that reflect your goals, protect what each spouse brings to the marriage, and stand up to the close review Florida courts apply to these documents.
Postnuptial agreements are not only for wealthy couples. Across Duval County and the surrounding area, they are practical tools for protecting separate assets, managing risk, and reducing conflict when circumstances change. Handled well, they also help spouses align expectations now, which can strengthen the relationship rather than strain it.
A postnuptial agreement is a written contract that spouses sign after they are already married. It sets the rules for how certain financial matters would be resolved if the couple later separates or divorces, which removes uncertainty and can significantly reduce the cost and conflict of any future case.
Because a Florida court will examine both how the agreement was made and what it says, precise drafting is what separates an agreement that holds from one a judge sets aside.
A well-drafted postnup lets you decide important financial questions in advance, on your own terms, rather than leaving them to a judge. Common provisions address:
Florida law places firm limits on what a postnup can control. An agreement cannot determine child custody or child support in advance. Those issues are always decided according to the child’s best interests at the time of the case, so any child custody and support arrangement is set later by the court, not locked in by contract. A postnup that tries to bargain away a child’s rights risks being disregarded on those points.
Many couples assume a postnup and a prenuptial agreement are the same document signed at a different time. In Florida, that is not true, and the difference matters for whether your agreement will actually hold.
Prenuptial agreements are governed by a specific statute, the Florida Uniform Premarital Agreement Act (Fla. Stat. §61.079). Postnuptial agreements are not covered by that statute. Instead, Florida courts test them under general contract law and the framework set by the Florida Supreme Court in Casto v. Casto, 508 So. 2d 330 (Fla. 1987).
The practical consequence is important: a postnup faces a stricter standard for financial disclosure than a prenup does. Because spouses already owe each other a duty of trust, courts look harder at whether each person truly understood the other’s finances before signing. That is exactly why a postnup should be prepared with that scrutiny in mind from the first draft.
An agreement is only worth having if it survives a challenge when it is finally needed. Under the Casto framework, a Florida judge can set a postnup aside if even one core requirement is missing, so meeting each one is not a formality. It is the whole point.
To stand up to review, a postnuptial agreement generally must satisfy the following:
A step that carries real weight, though it is not strictly required, is having independent counsel for each spouse. Florida courts view separate legal advice as strong evidence that both parties understood and freely accepted the terms.
Under Casto, disclosure is not just good practice. It is often the deciding factor. If a postnup makes an unfair or unreasonable provision for one spouse, Florida law treats that imbalance as raising a presumption of concealment. The burden then shifts to the spouse who wants to enforce the agreement to prove that full disclosure was given, or that the other spouse already knew the finances.
In plain terms, a lopsided agreement without documented disclosure is the easiest kind for a court to throw out. This is why we treat the disclosure process as seriously as the drafting itself, and why we keep a clear record of what was exchanged.
Contact us for more information about our services.
Couples turn to postnups to prevent future disputes and to protect both partners when life changes in ways no one planned for. A clear, court-ready plan can lower the stakes of any future divorce and encourage financial honesty in the marriage today. Situations where a postnup is especially useful include:
Choosing the right structure and documenting it correctly reduces the chance of a challenge later. A short consultation can confirm what belongs in your agreement and how to put it in place without weakening its enforceability.
Our role is not simply to fill in a template. It is to build an agreement that reflects your goals and is prepared to withstand the exact questions a Florida court would ask. Our process typically moves through these stages:
Throughout, we keep the tone calm and respectful. A postnup works best when both spouses feel the process was fair, and that starts with how the agreement is prepared.
An agreement that fit your life a few years ago may no longer match it. The birth of a child, a career change, a new business, a significant inheritance, or a large new debt can all shift the financial picture the agreement was built on.
When that happens, the right step is usually a new or revised agreement, prepared with updated financial disclosure. This is closely related to how Florida handles post-judgment modifications, and the same principle applies here: an agreement stays strong when it reflects current circumstances and current finances. We can review what you already have, tell you honestly whether it still protects you, and update it properly if it does not.
Couples come to us because they want an agreement that will actually work when it matters, prepared by attorneys who treat their family with respect. What sets our approach apart:
We help families grow throughout Jacksonville, Duval County, and the surrounding communities of Northeast Florida. Se habla Español
Question | Answer |
Can a postnuptial agreement include non-financial or “lifestyle” clauses? | Florida courts generally will not enforce clauses about personal behavior, such as fidelity, chores, or weight, and including them can weaken the whole document. A postnup is strongest when it stays focused on financial matters like property, debt, and support. |
Will having a postnup make divorce more likely? | There is no evidence that a postnup encourages divorce. In practice, it often does the opposite, because removing financial uncertainty tends to reduce conflict and lets couples focus on their relationship rather than worst-case fears. |
Can a postnuptial agreement be canceled or revoked later? | Yes. Spouses can revoke or replace a postnup by mutual written agreement at any time. Because the change must be documented correctly to be valid, it should be handled the same careful way as the original. |
What happens to our postnup if we move out of another state? | A court in a new state will usually apply its own rules when reviewing the agreement. A well-drafted postnup can include a choice-of-law provision, but it is wise to have the agreement reviewed after any move to confirm it still holds. |
Does a postnup affect our wills or estate plan? | It can. A postnup may waive or define rights that also appear in estate documents, such as a surviving spouse’s claims. For that reason it should be coordinated with your will and estate plan so the documents do not contradict each other. |
Can we write our own postnup without a lawyer? | You are allowed to, but do-it-yourself postnups are the ones courts set aside most often. Weak disclosure, vague terms, or a one-sided result give a judge clear grounds to reject the agreement, which defeats its entire purpose. |
"*" indicates required fields
