A prenuptial agreement is signed before the wedding, and a postnuptial agreement is signed after. Both can address property, debt, and support, but Florida applies different legal standards and disclosure requirements to each. Choosing between them usually comes down to timing rather than which one offers stronger protection.
Florida recognizes prenuptial agreements under Fla. Stat. § 61.079, the state’s version of the Uniform Premarital Agreement Act. The agreement must be in writing and signed by both parties, and it is enforceable without any consideration beyond the marriage itself.
Florida does not strictly require full financial disclosure for a prenuptial agreement to be enforceable. That said, a lack of disclosure becomes highly relevant if the agreement is later challenged as unconscionable, so most attorneys recommend full disclosure regardless.
Once a couple marries, a prenuptial agreement is no longer an option. A postnuptial agreement fills that role for couples who want a written agreement about their finances after the ceremony has already happened.
Florida’s premarital agreement statute does not govern postnuptial agreements directly. Instead, courts apply the framework set out in Casto v. Casto, where the Florida Supreme Court held that a postnuptial agreement can be set aside if it was the product of fraud, duress, coercion, or overreaching, or if it was unfair and the disadvantaged spouse lacked adequate knowledge of the marital estate.
In practice, this means postnuptial agreements face closer scrutiny of financial disclosure than prenups do. Each spouse generally needs a fair and honest picture of the other’s assets and income before signing.
Whether signed before or after the wedding, these agreements typically address how property and debt will be divided, whether spousal support will be paid and how much, protection for a business or professional practice, and what happens to specific assets such as an inheritance or a life insurance payout.
Couples with significant premarital assets, a family business, or children from a previous relationship often use one of these agreements to set expectations in writing rather than leaving those questions to be sorted out later.
Neither a prenuptial nor a postnuptial agreement can eliminate or reduce a child’s right to support. That protection belongs to the child, and Florida law will not enforce a provision that tries to waive it away.
Child custody and time-sharing arrangements are decided under the best interest standard at the time they come up, not locked in years earlier by a marital agreement. A court will not enforce a custody term written into either type of agreement.
Couples typically reach for a prenup when one or both spouses are entering the marriage with substantial assets, an existing business, or an inheritance they want to keep separate. It is also common among couples marrying later in life or for a second time, particularly when children from an earlier relationship are part of the picture.
A Prenuptial Agreement Lawyer in New Port Richey can help outline what makes sense to include before the wedding rather than after.
Some couples simply run out of time before the wedding and decide to put an agreement in writing once the marriage has already begun. Others turn to a postnuptial agreement because circumstances changed during the marriage, such as one spouse starting a business, receiving an inheritance, or the couple wanting to resolve ongoing disagreements about money.
A postnuptial agreement can also update or replace an existing prenup. Under Fla. Stat. § 61.079(6), a premarital agreement may be amended or revoked after the wedding only through a new written agreement signed by both spouses, which is itself a form of postnuptial agreement.
Neither agreement is inherently stronger or weaker than the other. Both can be set aside for the same core reasons: fraud, duress, coercion, overreaching, or unfair terms paired with inadequate financial disclosure.
If you are not yet married and want an agreement in place, a prenup signed before the ceremony is the more straightforward path. If the wedding has already happened, a postnuptial agreement is the only option, and it comes with a closer look at how honestly each spouse disclosed their finances.
Couples who never sign a prenuptial or postnuptial agreement are simply governed by Florida’s default rules if the marriage ends. Property and debt are divided under the state’s equitable distribution framework, and alimony, if any, is decided using the factors set out in Florida’s support statutes.
That default framework works well for a lot of marriages. It becomes less predictable when one spouse owns a business, expects a large inheritance, or brings significantly more assets into the marriage than the other, which is exactly when a written agreement tends to matter most.
Both spouses should have their own attorney rather than sharing one, since a shared attorney creates an obvious conflict of interest and gives a future court reason to question whether the agreement was truly voluntary.
Build in a review date or a sunset clause if your circumstances are likely to change, such as a business that has not yet launched or a blended family that is still forming. An agreement written for one stage of life does not always fit the next one.
Deciding between a prenuptial and a postnuptial agreement often depends on details specific to your marriage, your assets, and your timeline. A Postnuptial Agreement Lawyer in New Port Richey can walk through your options and help draft an agreement that holds up if it is ever challenged.
Dale L. Bernstein, Chartered Law Office has helped Pasco County couples negotiate both prenuptial and postnuptial agreements for close to four decades. Call (727) 862-4411 to schedule a consultation.