Prenuptial Agreements and Estate Impact

Prenuptial agreements significantly affect estate planning outcomes. Without understanding this interaction, estate plans may fail to achieve their intended results, and prenuptial provisions may be rendered ineffective. This guide examines how prenuptial agreements and estate planning work together, particularly in situations involving substantial assets or children from prior relationships.

The Elective Share: Surviving Spouse Rights

Most states provide surviving spouses with a right to claim a portion of the deceased spouse's estate regardless of what the will says. This is called the elective share or forced share.

Elective Share Amounts by State Type

States use different methods to calculate the elective share:

Fixed Percentage States: The surviving spouse receives a set percentage of the estate, typically:

• One-third of the estate (common in many states)
• One-half of the estate (some states)

Augmented Estate States: Following the Uniform Probate Code, approximately 18 states calculate the elective share based on length of marriage:

• Less than 1 year: 3%
• 1 year: 6%
• 2 years: 12%
• 3 years: 18%
• Increases by 6% annually
• Maximum: 50% after 15+ years of marriage

Community Property States: Nine states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin) use community property principles. The surviving spouse already owns half of community property; elective share concepts apply differently.

What the Elective Share Overrides

The elective share can override:

• Will provisions leaving assets to others
• Trust provisions (in most states)
• Some beneficiary designations
• Lifetime transfers made to defeat the spouse's rights

Example of Elective Share Impact

Without a prenuptial agreement:

Richard dies with a $2 million estate. His will leaves everything to his two children from his first marriage. His second wife, Patricia, married to him for 12 years, exercises her elective share.

In a one-third elective share state: Patricia receives $666,667, children receive $1,333,333.

In an augmented estate state (UPC): With 12 years of marriage, Patricia's elective share is 36%. Patricia receives $720,000, children receive $1,280,000.

Richard's intent to leave his entire estate to his children is defeated by the elective share.

Prenuptial Agreement Waiver of Elective Share

A prenuptial agreement can include a waiver of the elective share right, allowing each spouse's estate plan to function as intended.

Requirements for Valid Elective Share Waiver

Courts scrutinize elective share waivers carefully. Requirements typically include:

Voluntary Execution: Both parties must sign willingly, without coercion or duress. Presenting an agreement days before the wedding may suggest duress.

Full Financial Disclosure: Each party must provide complete disclosure of assets, income, and liabilities. Inadequate disclosure is a primary reason waivers are invalidated.

Independent Legal Counsel: While not always required, having separate attorneys for each party substantially strengthens enforceability.

Fair and Reasonable Terms: Some states require the agreement to be fair when signed, others when enforced, and some require both. Unconscionable terms may be rejected.

Proper Execution: The agreement must meet state requirements for form, signatures, witnesses, and notarization.

Sample Disclosure Schedule

A prenuptial agreement should include detailed financial schedules:

What Can Be Waived

Prenuptial agreements may waive:

• Elective share rights
• Rights to inherit under intestacy laws
• Rights to serve as personal representative
• Rights to claim against the estate
• Community property rights (in community property states)

What Generally Cannot Be Waived

• Child support obligations
• Rights that would make a spouse a public charge
• Rights created by federal law (some ERISA provisions)

Separate vs. Marital Property

Prenuptial agreements commonly distinguish between separate and marital property, which directly affects estate planning.

Defining Separate Property

Separate property typically includes:

• Assets owned before marriage
• Inheritances received by one spouse
• Gifts received by one spouse
• Personal injury awards (pain and suffering portion)
• Assets explicitly designated as separate in the prenuptial agreement

Defining Marital Property

Marital property typically includes:

• Assets acquired during marriage with marital funds
• Appreciation of marital assets
• Income earned during marriage
• Assets purchased with commingled funds

Commingling Risks

Separate property can lose its character through commingling:

• Depositing inheritance into a joint account
• Using separate funds for marital home improvements
• Titling separate property jointly
• Mixing business income with separate business assets

Prenuptial Protection of Separate Property

A prenuptial agreement can:

• Define what constitutes each spouse's separate property
• Establish that separate property remains separate regardless of commingling
• Specify that appreciation of separate property remains separate
• Create procedures for tracing separate property
• Establish presumptions favoring separate property characterization

Second Marriage Considerations

Prenuptial agreements are particularly important for second marriages, where competing interests frequently arise.

Common Conflicts

Surviving Spouse vs. Children from Prior Marriage: Without planning, the surviving spouse may inherit most or all of the estate, leaving children from the first marriage with nothing.

Current Spouse vs. Former Spouse: Ongoing obligations to a former spouse (alimony, property settlement) may conflict with the new spouse's interests.

His Children vs. Her Children: Blended families require careful planning to treat all children appropriately.

Coordination with Estate Planning

The prenuptial agreement should coordinate with:

Will Provisions: The will should reflect prenuptial commitments. If the prenup guarantees the spouse $500,000, the will must provide it.

Trust Structures: QTIP trusts, discussed in the blended families article, often implement prenuptial provisions.

Beneficiary Designations: Retirement accounts and life insurance should align with prenuptial terms.

Titling of Assets: How property is titled should match prenuptial characterizations.

Worked Example: The Harrison Prenuptial Agreement

William Harrison, age 58, is planning to marry Catherine, age 52. This is William's second marriage; he has two adult children from his first marriage. Catherine has never been married and has no children.

Financial Situation

William's Assets:

Catherine's Assets:

William's Goals

1. Protect $3,250,000 in assets for his two children
2. Provide adequately for Catherine during his lifetime
3. Ensure Catherine has resources if he dies first
4. Maintain control of family business for his children

Catherine's Goals

1. Financial security during the marriage
2. Reasonable provision if William dies first
3. Protection of her own separate property
4. Clear understanding of expectations

Prenuptial Agreement Terms

Separate Property Provisions:

• All premarital assets remain separate property
• Appreciation of separate property remains separate
• Inheritances received during marriage remain separate
• Each party waives all interest in the other's separate property

Elective Share Waiver:

• Both parties waive elective share rights
• Catherine waives right to claim against William's estate
• William waives right to claim against Catherine's estate

Estate Planning Commitments:

William agrees to:

• Maintain life insurance of at least $750,000 with Catherine as beneficiary
• Provide Catherine the right to reside in the marital home for five years after his death (or until remarriage)
• Leave Catherine $500,000 outright from his estate

Catherine agrees to:

• Accept the above provisions as full satisfaction of any spousal claims
• Make no claim against William's business interests
• Not contest William's estate plan

During Marriage:

• William will maintain Catherine on his health insurance
• Household expenses paid from joint account funded by William
• Each party responsible for debts incurred in their own name

Coordinating Estate Plan

William's estate plan now implements the prenuptial terms:

Life Insurance:

• $750,000 term policy with Catherine as primary beneficiary
• Policy owned by William, premiums paid from separate property

Will Provisions:

• $500,000 bequest to Catherine (per prenuptial agreement)
• Five-year right of residence in marital home
• Remainder of estate to children equally

Trust Structure:

• Revocable trust holds investment portfolio and business interest
• At William's death: $500,000 to Catherine, balance to children's trusts
• Children's trusts structured for asset protection

Projected Distribution at William's Death:

Assuming William dies in 10 years with $4,000,000 estate (growth on separate property):

Without the prenuptial agreement, Catherine's elective share (assuming one-third) would be $1,333,333, plus she would have claims against retirement accounts and potentially the business.

Result

The prenuptial agreement allows William to:

• Protect over $2.75 million for his children
• Provide Catherine with $1.25 million plus housing
• Maintain family business succession plans
• Create clear expectations avoiding future conflict

Catherine receives:

• Certainty about her financial future
• Substantial provision ($1.25 million) without litigation
• Protection of her own assets
• Clear understanding of the arrangement

Prenuptial Agreement and Estate Planning Checklist

Before Drafting the Prenuptial Agreement

• Compiled complete inventory of all assets and liabilities
• Gathered documentation (account statements, deeds, valuations)
• Identified assets intended to remain separate property
• Clarified estate planning goals for both parties
• Considered children from prior relationships

Prenuptial Agreement Provisions

• Included comprehensive financial disclosure schedules
• Defined separate property clearly
• Addressed appreciation of separate property
• Specified treatment of commingled assets
• Included explicit elective share waiver
• Stated waiver of intestacy rights
• Included estate planning commitments (if any)

Execution Requirements

• Each party represented by independent counsel
• Agreement signed well before wedding (30+ days preferred)
• Both parties acknowledged reading and understanding terms
• Agreement properly witnessed and notarized
• Original stored securely; copies to both attorneys

Coordinating Estate Planning Documents

• Will provisions match prenuptial commitments
• Trust terms implement prenuptial obligations
• Beneficiary designations align with agreement
• Property titling reflects separate/marital characterization
• Life insurance policies in place per agreement

Second Marriage Specific

• Children from prior marriage informed of arrangement
• Former spouse obligations considered and disclosed
• QTIP or other trust structures considered
• Business succession plans coordinated

Ongoing Maintenance

• Both attorneys retain copies of agreement
• Estate planning documents reference prenuptial agreement
• Review prenuptial terms when updating estate plan
• Document any agreed modifications in writing
• Update disclosure schedules if significant asset changes