A Maryland prenuptial agreement is a written contract signed by both future spouses that sets property, debt, alimony, and estate rights for the marriage ahead of time, and Maryland courts will enforce it when the spouse trying to uphold it can show the terms were fair and that both parties signed voluntarily after full financial disclosure. Maryland has no dedicated prenuptial statute. Instead, the Family Law Article authorizes spouses to contract about alimony, support, property, and personal rights,1Maryland General Assembly. Maryland Family Law Code Section 8-101 and courts fill in the rest using general contract law and the fairness rules from Cannon v. Cannon (2005).2Justia Law. Cannon v. Cannon
What Makes the Agreement Valid
At the formal level, the agreement must be in writing and signed by both parties. Notarization is not legally required, but it adds credibility by confirming identity and voluntary signing.3The Maryland People’s Law Library. Prenuptial Agreements The document has no legal effect until the couple actually marries. If the wedding doesn’t happen, the contract never activates.
The harder requirement is fairness. In Cannon v. Cannon, Maryland’s highest court held that engaged partners stand in a confidential relationship as a matter of law. That matters because it flips the usual contract rule: the spouse who wants to enforce the prenup carries the burden of showing there was no overreaching, meaning no unfairness in the terms or in how the agreement was obtained.2Justia Law. Cannon v. Cannon
The Cannon court described three ways to meet that burden. Full financial disclosure, documented in writing before signing, is what the court called “perhaps the gold standard.” Showing that the other party already knew about the assets covered by the waiver works too. And even without complete disclosure, the enforcing spouse can show the terms were not unfairly lopsided at signing. If the agreement does look disproportionate, courts then look at how much disclosure occurred, whether the challenging spouse had a chance to consult a lawyer, and whether they knowingly gave up their rights.2Justia Law. Cannon v. Cannon
Independent counsel for each spouse isn’t legally required, and an agreement signed without lawyers isn’t automatically void. But the Cannon factors reward it heavily. Having the other spouse represented by their own attorney makes it very hard for them to later claim they didn’t understand what they were signing.
What the Agreement Can Decide
A Maryland prenup lets a couple replace the default rules that would otherwise control divorce and inheritance outcomes. Common provisions:
- Classifying specific assets as separate property so they stay out of the marital estate. This is often used to protect a business, pre-owned real estate, or investments.
- Allocating debts brought into the marriage, such as student loans or business obligations, to the spouse who incurred them.
- Setting the amount or duration of alimony, or waiving it entirely. The Family Law Article explicitly permits alimony agreements.1Maryland General Assembly. Maryland Family Law Code Section 8-101
- Waiving or limiting a surviving spouse’s claim against the other’s estate.
- Addressing how income earned during the marriage, or appreciation on premarital assets, will be treated.
Couples can also build in a sunset clause so the agreement expires after a set number of years or on a specific event, like the birth of a child. Once a sunset triggers, Maryland’s default property and support rules take over unless a postnuptial agreement replaces the prenup.
What the Agreement Cannot Decide
Some provisions won’t be enforced no matter what the parties signed. Child custody and child support can’t be fixed by a prenuptial agreement. Judges decide those issues based on the child’s best interests at the time of the proceeding, and a contract signed before the child exists can’t bind that analysis.3The Maryland People’s Law Library. Prenuptial Agreements
Clauses that function as a contract to divorce are also unenforceable. A provision offering a large payout specifically for ending the marriage can be struck down, because Maryland does not allow couples to validly contract before marriage to divorce afterward.3The Maryland People’s Law Library. Prenuptial Agreements Anything that requires illegal activity or violates public policy will be disregarded as well.
Waiving the Surviving Spouse’s Elective Share
One of the most consequential things a Maryland prenup can do is waive the surviving spouse’s elective share. Without a waiver, a surviving spouse can claim one-third of the deceased spouse’s estate if there are descendants, or one-half if there are none, regardless of what the will says.4Maryland General Assembly. Maryland Estates and Trusts Code Section 3-203
The Estates and Trusts Article allows this right to be waived before or after marriage through a written contract signed by the waiving party.5Justia Law. Maryland Estates and Trusts Code Section 3-205 A waiver of “all rights” in the other spouse’s property is broad: it reaches the elective share, the family allowance, intestate succession, and any benefit under a will executed before the waiver. Second marriages often use this provision to make sure assets pass to children from a prior relationship rather than to the new spouse. The exact language of the waiver clause does a lot of work, so it should be drafted deliberately.
Financial Disclosure Done Right
Documented, specific financial disclosure is the single strongest protection a Maryland prenup can have. Each party should prepare and exchange an inventory covering:
- Current balances for checking, savings, and money market accounts
- Each real estate holding, its estimated market value, and any mortgage balance
- Retirement accounts including 401(k) plans, IRAs, and pensions
- Business ownership percentages and valuations
- Debts: student loans, credit cards, car loans, personal lines of credit
- Income, backed by recent tax returns or pay stubs
Most attorneys organize this into a formal Schedule of Assets and Liabilities attached to the agreement as an exhibit. That schedule becomes direct evidence of disclosure if the prenup is later challenged. Vague or incomplete figures are a liability. If a court finds that one spouse hid assets or misrepresented their finances, the agreement can be thrown out entirely.
Timing and Signing
When the agreement gets signed relative to the wedding matters. Maryland courts have reached opposite conclusions on last-minute prenups depending on the surrounding facts. A 2013 appellate case upheld an agreement signed four days before the wedding because the evidence showed the wife intended to marry regardless of its terms and was not coerced. A 2021 case voided an agreement where the husband first raised the topic about a week before the wedding and pressured his fiancée to read and sign it before a dress fitting. The totality of the circumstances, not the calendar alone, decides whether timing becomes a coercion problem.
Starting discussions and drafting several months before the wedding is the safer path. That window gives both sides time to hire their own attorneys, exchange disclosures, negotiate, and sign without the appearance of pressure. Signing in front of a notary is a sensible step even though Maryland doesn’t require it, because it provides evidence of identity and voluntary participation if the agreement is ever contested.3The Maryland People’s Law Library. Prenuptial Agreements
Changing or Ending the Agreement After Marriage
A prenuptial agreement is not permanent. After marriage, both spouses can modify or revoke it, but any change has to be in writing and signed by both. Neither spouse can alter it unilaterally. For substantial changes, couples can execute a postnuptial agreement, which Maryland courts evaluate under essentially the same standards: written, signed, voluntary, with full disclosure, and fair in its terms.
If the original agreement contained a sunset clause, it expires automatically on the specified date or event, and Maryland’s default rules on property division, alimony, and estate rights resume unless a new agreement takes its place.
If a Spouse Challenges the Agreement
A spouse can attack a Maryland prenup on grounds of fraud, duress, coercion, mistake, undue influence, incompetence, or unconscionability.3The Maryland People’s Law Library. Prenuptial Agreements Because of the confidential relationship between engaged partners, the spouse seeking enforcement bears the burden of proving there was no overreaching.2Justia Law. Cannon v. Cannon That is an unusual allocation. In ordinary contract disputes, the person attacking the contract has to prove it was defective; Maryland flips that for prenups.
Courts look at whether the agreement was grossly unfair, whether the parties dealt honestly with each other, and whether both fully disclosed their assets before signing. A large wealth gap between the spouses does not by itself void the agreement, but it does raise the court’s scrutiny of whether the wealthier party took advantage of the relationship. The enforcing spouse who can point to thorough written disclosure, independent counsel on both sides, and a reasonable gap between signing and the wedding stands on the firmest ground. Agreements missing all three of those protections are the ones that most often fail in court.