Maryland: Prenuptial Agreement Requirements

Requirements one by one

Maryland uses contract statutes plus the Cannon test

Maryland has not enacted the UPAA or another comprehensive premarital-agreement act. Courts combine the Statute of Frauds in Courts and Judicial Proceedings § 5-901, the agreement provisions in Family Law §§ 8-101 and 8-103, the death-right waiver in Estates and Trusts § 3-406, and Cannon v. Cannon's case-law enforcement framework.

Section 5-901 requires a marriage-consideration agreement to be in writing and signed by the party against whom enforcement is sought. Both prospective spouses should sign if the obligations are to run both ways. Stewart, applying Cannon, confirms that consummation of the marriage itself supplies sufficient consideration.

No notary or witness is a universal validity step

The governing prenup provisions state no notary, acknowledgment, witness, attestation, oath, or general recording condition. That does not eliminate separate formalities for a deed, beneficiary designation, trust, or other instrument used to carry out the agreement.

For rights at death, § 3-406 is specific: a prospective or current spouse may waive the surviving-spouse elective share in a written contract, agreement, or waiver signed by the person giving up the right. Unless the document says otherwise, broad “all rights” language also reaches the family allowance, intestate benefits, pre-waiver will or revocable-trust benefits, and the right to letters.

Disclosure and knowledge address overreaching

Cannon treats prospective spouses as being in a confidential relationship as a matter of law. The person seeking enforcement therefore must show that the agreement was not tainted by overreaching—unfairness or inequity in either the result or procurement.

Full, frank, and truthful disclosure of the property and its worth can establish that the waiving party understood what was being surrendered. Adequate knowledge can substitute: the challenger need not know every discrete asset value, but must adequately know the assets' existence and what they are worth in the aggregate.

Maryland has no statutory separate-writing waiver of financial disclosure. If neither disclosure nor knowledge exists and the allowance is unfairly disproportionate, the proponent must prove both parts of the overreaching test: the received benefit was commensurate enough to be fair and equitable, and the challenger entered freely and understandingly.

Counsel and wedding timing remain factual

Separate counsel is not mandatory, and Maryland has no fixed final-draft review or pre-wedding waiting period. Cannon declined to create a bright-line rule compelling counsel. A genuine opportunity to obtain independent advice, without discouragement, weighs in favor of enforcement.

Stewart upheld an agreement signed four days before the wedding after fact findings that the challenger could have sought counsel, chose not to, understood the agreement's purpose and major listed assets, and would have married regardless. Four days is not a statutory safe harbor; the process and the signer's actual choice control.

Fairness is measured when the agreement is made

The front-line test is Cannon's no-overreaching inquiry. Stewart also analyzed unconscionability as a separate contract challenge: the challenger bears the burden to show both procedural and substantive unconscionability, and the court measures it at execution.

Maryland does not use a general divorce-time “second look” to rebalance a valid prenup because later circumstances became harsh. Stewart followed Martin v. Farber in rejecting later marital developments as the basis for declaring an otherwise valid prenup unconscionable, while leaving ordinary equitable remedies for independently wrongful conduct outside the agreement.

Alimony may be expressly waived or made nonmodifiable

Family Law § 8-103 permits a court to modify a current spousal-support provision unless the agreement expressly waives alimony or support or specifically says the support provision is not subject to court modification. Maryland's statute does not add a public-assistance or enforcement-time hardship override like some uniform-act states.

An alimony term still depends on the validity of the agreement under Maryland's execution-time contract and overreaching rules.

Child terms remain under court control

Section 8-103(a) lets the court modify any agreement term concerning a minor child's care, custody, education, or support when the change would be in the child's best interests. Section 1-201 independently preserves the court's authority to decide and later modify custody, visitation, and child support.

The parties may express plans, but they cannot make a binding final decision that displaces the child's interests or the court's continuing jurisdiction.

A post-marriage change uses a different lane

Maryland has no prenup-specific amendment or revocation section. After marriage, spouses may make an agreement under Family Law § 8-101, but the change is a postnuptial agreement subject to its own validity and equitable review. Lloyd states that a postnuptial agreement is enforceable unless unconscionable or produced by fraud, duress, mistake, or undue influence.

Any continuing waiver of elective-share rights must remain in a writing signed by the spouse waiving those rights under Estates and Trusts § 3-406. An informal edit should not be assumed to amend every part of the original prenup.

What trips people up

Disclosure is not a uniform-act checklist. Maryland uses disclosure or adequate knowledge as routes through the confidential-relationship analysis, then the two-prong overreaching test when those routes are missing.

Four days is a fact, not a rule. Stewart's result depended on opportunity, understanding, and voluntary choice; it did not establish a minimum or safe period.

The elective-share citations changed. Current death-right waiver law is Estates and Trusts § 3-406. Older materials that point to §§ 3-102 through 3-203 describe superseded architecture.

Common questions

Does a Maryland prenup need notarization?

Not under the general prenup rules cited here. A separate deed, trust, or recordable instrument used to implement a property term may have its own formalities.

Is independent counsel required?

No bright-line rule compels it, but opportunity for independent advice is important evidence that the agreement was entered freely and understandingly. Preventing or discouraging advice can change the analysis.

Can a prenup permanently set child support or custody?

No. The court may modify child-related provisions when the child's best interests require it and retains continuing authority over custody, visitation, and support.

Statutes and sources

• Md. Code, Cts. & Jud. Proc. § 5-901; Family Law §§ 1-201, 8-101, and 8-103; Estates & Trusts § 3-406. Current official Maryland statutes governing writing, spouse agreements, support modification, child authority, and death-right waivers. § 5-901, § 8-101, § 8-103, § 1-201, and § 3-406 (accessed July 28, 2026).
• Cannon v. Cannon, 384 Md. 537 (2005), as applied in Stewart v. Stewart, 214 Md. App. 458 (2013). Confidential relationship, disclosure or adequate knowledge, overreaching, counsel opportunity, consideration, and execution-time unconscionability. Official Stewart opinion (accessed July 28, 2026).
• Lloyd v. Niceta, 486 Md. 1 (2023). Post-marriage agreement validity for the amendment route. Official opinion (accessed July 28, 2026).