The Legacy Firewall: Prenuptial Agreements as Asset Protection

The Legacy Firewall: Prenuptial Agreements as Asset Protection

Romance is emotional; marriage is a financial contract imposed by the State. Why signing a Prenup is the only way to rewrite the default rules of divorce and save the family empire.

Dec 29, 2025 Code Authority: Team BMT RETIREMENT > ASSET PROTECTION

Executive Summary

  • The Default Contract: If you don’t sign a Prenup, you already have one. It’s called “State Divorce Law.” In Community Property states (like CA, TX), everything earned or appreciated during the marriage is split 50/50. A Prenup allows you to opt out of this state default.
  • The “Appreciation” Trap: Even if you bring $10M into the marriage (Separate Property), the growth of that $10M during the marriage might be considered Marital Property. If your business grows from $10M to $50M, your spouse could claim half the growth ($20M). A Prenup fixes this.
  • The Governance Requirement: For wealthy families, a Prenup is often not a choice; it’s a mandate. The Family Constitution (Art. 731) usually requires any heir wishing to receive Trust distributions to sign a Prenup to prevent “outsiders” from gaining family voting rights.

The “Duress” Defense

Why Prenups Fail: Judges will throw out a Prenup if it looks like it was signed under pressure.
👉 The Golden Rules:
1. Timing: Sign it at least 30-60 days before the wedding. Never the week of.
2. Counsel: Both parties MUST have their own, independent lawyers.
3. Disclosure: You must fully disclose all assets. Hiding money here voids the contract later.

Mechanic: Redefining “Marital Property”

Separate
Business & Growth
Alimony
Capped / Waived
Privacy
Arbitration Clause
Debt
Keep Liability Separate

Simulation: Business Owner Divorce (10-Year Marriage, Business Grew $40M)

Settlement Cost to Owner
No Prenup (State Law)-$20M Payout
Spouse entitled to 50% of appreciation. Often forces sale of the business to pay.
With Prenup-$2M Payout
Defined “Exit Payment” based on years of marriage. Business remains untouched.
Wealth Preserved+$18M Saved
The contract prevented the business from being dismembered.
Feature No Prenup (Default) With Prenup
Business Growth Shared (Marital Asset) Separate (if defined)
Spousal Support Judge’s Discretion (Unpredictable) Pre-Defined Formula
Privacy Public Court Record Private Arbitration

“A Prenup isn’t planning for divorce; it’s planning for the continuity of the estate. It ensures that no matter what happens emotionally, the ‘entity’ of the family wealth remains intact and governed by logic, not anger.”

Essential Resources

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