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Can a Prenup Be Enforced if It Was Signed Years Ago?

by | Dec 23, 2025 | Family Law |

Many people sign a prenuptial agreement thinking it is “just a formality” to please a cautious partner or family member. But decades later, as divorce looms, that once-innocent piece of paper can feel like a trap. You might stare at it and wonder: Is this faded document from 20 years ago really still binding?

At the Law Offices of Michael A. Robbins, we’ve represented divorce clients for over 30 years, and we’ve seen how shocking it can feel to discover that an old prenup may dictate your financial future. While prenups are generally enforceable no matter how old they are, that doesn’t mean you’re without options.

Here’s what you need to know:

  • Sometimes, prenups aren’t enforceable based on the conditions under which they were signed.
  • Courts have the power to override prenup terms that are unfair or cause extreme hardship.
  • A skilled attorney can help you challenge or negotiate unfair provisions.

How Long Do Prenups Actually Last?

Unlike a carton of milk, a prenuptial agreement does not have an expiration date. Unless the contract itself includes a “sunset clause”, a specific provision stating the agreement becomes void after a certain number of years, it is intended to last for the duration of the marriage.

Courts in Michigan generally enforce prenuptial agreements regardless of how much time has passed. Whether it has been 5 or 25 years, the judge will treat the document as a binding contract.

This realization can be emotionally jarring. It is shocking to discover that decisions you made as a young adult can override decades of shared life and contribution to a marriage. However, knowing the baseline rule is the first step in determining if your specific situation allows for an exception.

Are There Situations Where a Prenup Can Be Challenged?

Just because a prenup is old does not mean it is ironclad. Challenges to prenups often focus on the circumstances surrounding the signing of the document, rather than the age of the document itself.

  • Full Disclosure: For a prenup to be valid, both parties must have provided a full and accurate disclosure of their assets at the time of signing. If your spouse hid money, real estate, or business interests back then, the agreement could be invalidated today.
  • Coercion or Duress: A contract must be signed voluntarily. If you were threatened, manipulated, or forced to sign the agreement hours before the wedding, a court may find that you signed under duress.
  • Fraud or Misrepresentation: If one spouse lied about financial obligations, debts, or other material facts, the prenup may not hold up. Courts take dishonesty seriously, even if it’s uncovered long after the agreement was signed.
  • Lack of Legal Formalities: If the prenup was not properly signed, witnessed, or notarized, or if one spouse did not have an opportunity to seek independent legal counsel, its enforceability may be questioned.

Discovering that your spouse may have manipulated the situation years ago can feel like a fresh betrayal. It adds a layer of complexity to an already difficult divorce, but these factors are critical legal grounds for challenging the agreement.

Can Courts Override Old Prenups If They Are Extremely Unfair?

In rare instances, a court may consider the circumstances at the time of the divorce rather than just the time of signing. This usually happens if enforcing the agreement would put one spouse in a position of extreme financial hardship or require them to rely on state assistance.

For example, if an agreement leaves one spouse destitute after a 30-year marriage while the other retains millions, a judge may intervene to provide a more equitable outcome. This is not guaranteed, but a knowledgeable attorney can explore the possibility.

How a Prenuptial Agreement Lawyer Can Help

You do not have to accept an unfavorable outcome simply because a document exists. A prenuptial agreement lawyer plays a vital role in examining the validity of the contract.

Your attorney will:

  • Review the original agreement and the specific circumstances under which it was signed.
  • Identify potential legal loopholes, such as a lack of independent legal counsel at the time of signing.
  • Look for signs of fraud, coercion, or hidden assets.
  • Represent you in negotiations to modify the terms or petition the court to invalidate the agreement entirely.

You Have Options

The age of a prenuptial agreement does not automatically make it invalid, but it also does not mean you are out of options. Unfair, fraudulent, or coerced agreements can be challenged in court.

At the Law Offices of Michael A. Robbins, we understand the high stakes involved in these cases. We can review your agreement and help you determine the best path forward to protect your financial future. Contact us today to get started.