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Durango Family Law June 16, 2025

Postnuptial Agreements: When Should You Consider One?

When most people hear the word "prenup," they think of couples signing a contract before they walk down the aisle. But what happens after the vows are exchanged? Can couples still define the financial terms of their relationship after marriage? The answer is yes—and it comes in the form of a postnuptial agreement.

While they aren’t as widely discussed as prenuptial agreements, postnuptial agreements are becoming increasingly popular among married couples who want to clarify their financial responsibilities, protect individual assets, or prepare for unforeseen circumstances. These legally binding contracts can help strengthen marriages, reduce conflict, and provide peace of mind.

Here at Durango Family Law, we recognize the sensitive nature of postnuptial agreements. When working with our clients in Durango, Colorado, we approach these agreements with the care and consideration that only experienced family law attorneys possess.

Here, we’ll explore what postnuptial agreements are, how they work, and—most importantly—when you should consider creating one. Whether you're newly married or have been together for decades, understanding the benefits and implications of a postnup could be a crucial step toward financial clarity and relationship stability.

What Is a Postnuptial Agreement?

A postnuptial agreement (often called a "postnup") is a legal contract entered into by a married couple after they’re already legally wed. Much like a prenuptial agreement, it outlines how assets, debts, income, and responsibilities will be handled in the event of a divorce, separation, or death.

Postnups can cover a range of topics, including:

  • Division of marital and separate property

  • Spousal support (alimony) terms

  • Management of debts

  • Distribution of life insurance benefits

  • Estate planning provisions

Unlike prenups, which are created in anticipation of marriage, postnups are developed during the course of the marriage, often in response to changing financial or personal circumstances.

Legal Validity

For a postnuptial agreement to be enforceable, it must meet certain legal requirements:

  • Voluntary execution: Both parties must sign the agreement willingly, without coercion.

  • Full financial disclosure: Both spouses must provide complete and accurate information about their finances.

  • Fair and reasonable terms: The agreement shouldn’t be unconscionably one-sided.

  • Proper formalities: The agreement should be in writing and signed by both parties, ideally with independent legal counsel.

In Colorado, as in many states, courts will scrutinize postnuptial agreements closely to assure fairness and equity. Having separate attorneys for each spouse is often recommended to avoid claims of duress or unfairness later on.

Reasons to Consider a Postnuptial Agreement

Couples may choose to enter into a postnup for a variety of reasons—some practical, others emotional, or legal. Below are some common scenarios where a postnuptial agreement may be beneficial.

Change in Financial Circumstances

Life is unpredictable. One spouse may receive a large inheritance, win the lottery, or start a successful business. In such cases, a postnup can help delineate what will happen to those assets if the marriage ends.

Protecting Separate Property

If one spouse brings significant assets into the marriage—such as real estate, retirement accounts, or stocks—a postnup can clarify that these remain separate property and aren’t subject to division.

Rebuilding Trust After a Marital Issue

Infidelity or financial betrayal can damage trust. A postnuptial agreement can serve as part of a reconciliation strategy, providing reassurance and concrete steps toward rebuilding the relationship.

Stay-at-Home Spouses and Career Sacrifices

When one partner gives up a career to care for children or support the other’s professional growth, a postnup can provide financial protections in case of divorce.

Estate Planning and Blended Families

In second marriages or blended families, postnups can make sure that children from previous relationships are protected and that estate plans align with the couple’s mutual wishes.

When Is the Right Time to Discuss a Postnup?

Timing and communication are critical when it comes to discussing a postnuptial agreement. While it might feel uncomfortable to bring up legal contracts during marriage, open and honest communication can often strengthen a relationship.

Here are some common situations that may serve as natural entry points for the conversation:

  • After receiving an inheritance: You may want to protect family money or heirlooms.

  • When one spouse starts a business: To separate personal and business assets and liabilities.

  • During financial planning sessions: As part of long-term estate planning or asset protection strategies.

  • Following marital challenges: As a tool for rebuilding trust and defining future responsibilities.

Choosing the right moment, maintaining transparency, and approaching the subject with empathy are crucial to securing a constructive dialogue.

Key Elements to Include in a Postnuptial Agreement

A well-drafted postnuptial agreement will be thorough, specific, and tailored to your unique circumstances. While each agreement will differ, most postnups include several core elements. Here are some typical clauses found in a postnup:

  • Asset classification: Identification of separate vs. marital property.

  • Debt allocation: Who is responsible for specific debts acquired before or during the marriage.

  • Spousal support: Terms and conditions for alimony if the marriage ends.

  • Business interests: Ownership, management, and division of any businesses.

  • Estate planning coordination: Alignment with wills, trusts, and other estate documents.

  • Life insurance policies: Designation of beneficiaries and policy ownership.

Including these clauses makes sure that both spouses have a clear understanding of their financial rights and obligations, reducing uncertainty and potential conflict in the future.

Additional Considerations

There are additional considerations to review when discussing a postnuptial agreement:

  • Dispute resolution: Include methods like mediation or arbitration to handle disagreements.

  • Sunset clauses: Specify an expiration date or event that would nullify the agreement.

  • Modification provisions: Outline how the agreement can be updated or changed in the future.

These additional provisions provide flexibility and help make sure the postnuptial agreement remains fair, relevant, and effective as circumstances change over time.

Advantages of a Postnuptial Agreement

For many couples, the idea of drafting a legal agreement after marriage may seem overwhelming. However, the benefits of a postnup often outweigh the initial discomfort of having the conversation. Here are some potential benefits:

  • Clarity and transparency: Establishes a clear understanding of financial responsibilities and expectations.

  • Conflict reduction: Can prevent future disputes or misunderstandings about finances.

  • Asset protection: Helps safeguard personal or family assets in case of divorce.

  • Tailored estate planning: Makes sure that each spouse’s estate planning goals are respected.

  • Relationship strengthening: Encourages open communication and trust between partners.

Together, these benefits make postnuptial agreements a practical tool for fostering financial harmony and long-term marital stability.

When a Postnup May Not Be Right for You

Despite their many benefits, postnuptial agreements aren't for everyone. There are certain situations where a postnup may not be practical or advisable.

Potential Drawbacks

While there are many benefits to a postnuptial agreement, there are some drawbacks:

  • Lack of enforceability: If the agreement is deemed unfair, coerced, or improperly executed, it may be thrown out in court.

  • Emotional strain: Bringing up the topic can cause friction or lead to suspicion.

  • Intricate negotiations: Crafting an agreement that satisfies both parties can be time-consuming and emotionally charged.

  • Legal costs: Each spouse typically needs separate legal counsel, which can increase costs.

It’s essential to evaluate whether the potential advantages of a postnup outweigh the risks and whether both parties are entering the process in good faith.

Checklist: Is a Postnuptial Agreement Right for You?

Before pursuing a postnuptial agreement, ask yourself the following questions:

  • Do we have significant individual or marital assets to protect?

  • Has one of us experienced a major change in financial circumstances?

  • Are we part of a blended family with children from previous relationships?

  • Has there been a marital issue that affected trust or finances?

  • Are we looking for more clarity and transparency in our financial life?

  • Do we both feel comfortable discussing financial matters openly?

  • Are we both willing to obtain independent legal counsel?

If you answered "yes" to most of these questions, a postnuptial agreement may be worth considering.

How to Create a Postnuptial Agreement

Crafting a postnup requires careful planning, legal expertise, and mutual cooperation. Here's a step-by-step guide:

  1. Discuss the idea openly: Initiate the conversation respectfully and explain your reasons.

  2. Hire separate attorneys: Each spouse should have their own legal representation to assure fairness and avoid conflicts of interest.

  3. Full financial disclosure: Share all financial information openly, including income, debts, assets, and liabilities.

  4. Draft the agreement: Work with your attorneys to develop clear, balanced, and enforceable terms.

  5. Review and negotiate: Both parties should have time to review and suggest changes if needed.

  6. Sign and notarize: Once finalized, the agreement should be signed and notarized.

  7. Store securely and update as needed: Keep a copy in a safe place and revisit the agreement periodically to make sure it still meets your needs.

Taking the time to follow these steps will help make sure that your agreement isn’t only legally valid but also mutually beneficial.

Speak With a Family Law Attorney Today

Postnuptial agreements aren’t about planning for failure—they're about creating a roadmap for financial transparency and mutual respect. At Durango Family Law, our team realizes that postnuptial agreements are a powerful tool for building a stronger, more secure marriage.

We serve clients in the following areas of Colorado: Durango, Pagosa Springs, Cortez, Dolores, Silverton, Hermosa, Hesperus, and La Plata County, Montezuma County, and San Juan County. Contact us today to schedule a consultation.


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