Family Law

Maryland Prenups: What Makes One Hold Up | Guerami Law Firm

Published August 11, 2026 on familylawmd.com

A prenuptial agreement feels like insurance. You sign it, you file it away, and you assume it will do its job if the day ever comes. In Maryland, that assumption is dangerous. A prenup here is only as strong as the honesty and fairness that went into making it. A one-sided agreement, one signed under pressure, or one built on hidden numbers can be thrown out entirely by a judge — and you usually learn that in the middle of a divorce, when it is far too late to go back and do it right.

Start with something most people do not know. Maryland has not adopted the Uniform Premarital Agreement Act, the standardized statute that governs prenups in more than half the states. There is no tidy checklist in the Maryland code that, if you tick every box, guarantees enforcement. Instead, Maryland judges decide whether a prenup holds up under case law — above all the Maryland high court's 2005 decision in _Cannon v. Cannon_ — and that body of law asks harder questions than ordinary contract law does.

A Prenup Is Not an Ordinary Contract

When two strangers sign a business contract, the law assumes they were each looking out for themselves. If one of them later wants out, that person carries the burden of proving something went wrong. Engaged couples are different. Maryland treats people about to marry as being in a confidential relationship — a relationship of trust, where each person is expected to deal honestly with the other.

Because of that trust, Maryland flips the burden of proof. If a prenup is challenged in court, the spouse trying to _enforce_ it is the one who must prove it was fair. The spouse attacking it does not have to prove fraud. That single rule is why so many do-it-yourself prenups fail: they were written as if they only had to look fair, when in Maryland the person relying on them has to _prove_ they were fair.

The Two Fairness Tests

A Maryland prenup has to pass two tests. The first is procedural — how the agreement was made. Was it signed freely and voluntarily? Did each person understand what they were giving up? Or was there overreaching, pressure, or a deadline that left no real choice? The second is substantive — what the agreement actually says. Is it so lopsided that it shocks the conscience?

Sitting at the center of both tests is disclosure. Maryland requires frank, full, and truthful disclosure of what each person owns and owes. The logic is simple: you cannot knowingly waive a claim to something you were never told about. If one spouse concealed assets, or quietly listed a business worth millions as worth a fraction of that, that silence can bring the entire agreement down. The alternative to full disclosure is proof that the other spouse already had adequate independent knowledge of the finances, or knowingly chose to waive disclosure — but those are harder to prove, and disclosure is the safe road.

A prenup is not a magic document. It is the written record of a fair, honest deal. If the honesty was missing when it was signed, the paper will not save it later.

Timing Is Part of the Deal

When a prenup is signed matters as much as what it says. An agreement handed to your fiancé the night before the wedding — guests arriving, deposits paid, dress bought — invites a judge to find that it was signed under duress. There was no real chance to read it, question it, or walk away. A prenup negotiated weeks or months out, with time to think and to get advice, is far harder to attack. Rushing the timeline to gain an edge usually backfires.

⚠ Do Not

Do not hide, undervalue, or “round down” your assets. Concealment is the single fastest way to lose the whole agreement.
Do not spring the prenup on your fiancé in the final days before the wedding. Signing under that pressure looks like duress.
Do not share one lawyer between the two of you. One attorney cannot protect both sides; each person needs independent counsel.
Do not try to set child support or custody in a prenup. Maryland courts will disregard those terms no matter what you wrote.
Do not sign anything you do not fully understand. Once signed, a valid prenup can bind you for the length of the marriage.

★ The Legal Tools That Make a Prenup Hold

A complete written schedule of every asset and debt, attached to the agreement, so no one can later claim they were kept in the dark.
Independent counsel for each party — separate lawyers giving separate advice.
Execution well before the wedding, with real time to read, question, and negotiate.
Clear waiver language showing each person knowingly and specifically gave up rights to marital property or alimony.
A severability clause, so that if one provision is struck down, the rest of the agreement can still stand.

What a Prenup Can — and Cannot — Do

A Maryland prenup can do real work. It can decide how property will be divided if the marriage ends, protect a family business or an inheritance, sort out what is marital and what is separate, and settle whether either spouse waives alimony. For people entering a second marriage, coming in with children, or owning a business, those are powerful protections.

But a prenup cannot bargain away your child's rights. Under Maryland Family Law § 8-103, the court keeps the authority to decide child support and custody, regardless of what two parents agreed before they married. Child support belongs to the child, not to the parents, and no private contract can waive it. Terms designed to encourage or reward divorce, and terms that are simply unconscionable, will not be enforced either.

What Changed This Year

Not much — and that itself is worth knowing. Maryland still has not adopted the uniform premarital act, and _Cannon v. Cannon_ remains the controlling standard. The family-law changes that took effect in Maryland on October 1, 2025 reshaped child support and custody, not prenuptial agreements. So the guidance is unchanged and unforgiving: there is no fill-in-the-blank form that guarantees a Maryland court will enforce your prenup.

The honest truth is that a prenup that survives is built, not downloaded. It takes full disclosure, independent advice on both sides, careful timing, and language written to prove — not just assert — that the deal was fair. Done right, it can spare two people the worst fights of a divorce. Done carelessly, it is a false sense of security that fails at the exact moment it is needed.

Talk with a Maryland family law attorney

Contact The Guerami Law Firm, LLC through FamilyLawMD.com for a confidential consultation with Amir Guerami and his team.