Second marriages fail at higher rates than first marriages, and estate planning mistakes are often a contributing factor. Clear planning before or early in the marriage protects both spouses and their children while reducing conflict. Here are the mistakes to avoid.
Mistake 1: Using Your First Marriage's Estate Plan
The problem: Your estate plan from your first marriage probably leaves everything to your ex-spouse (or their estate) with your children as contingent beneficiaries. Even if you updated beneficiaries, the structure probably doesn't fit your current situation.
The fix: Create a completely new estate plan designed for your blended family circumstances. Don't try to patch the old one.
What to update immediately:
- Beneficiary designations on life insurance
- Beneficiary designations on retirement accounts
- Healthcare directive and power of attorney
- Will and trust documents
Mistake 2: Assuming State Law Protects You
The problem: Many people assume their spouse is automatically protected or that intestate succession works in their favor. State laws vary dramatically, and the results rarely match what couples actually want.
In California:
- Community property (earned during marriage) goes to surviving spouse
- Separate property (brought into marriage) is divided between spouse and children
- Without a will, your spouse may receive much less than you intended
The fix: Don't rely on defaults. Create explicit estate planning documents that reflect your actual wishes.
Mistake 3: Not Defining Separate vs. Community Property
The problem: In California, property acquired during marriage is presumptively community property. But what about assets you brought into the marriage? Inheritances you received? The house you owned before?
Without clear documentation, these can get mixed up, creating confusion and conflict.
The fix:
- Create a pre- or post-nuptial agreement clarifying property ownership
- Maintain separate property separately (don't commingle)
- Keep records of what you brought into the marriage
- Title property appropriately
Mistake 4: Failing to Coordinate Between Spouses
The problem: Each spouse creates their own estate plan, but the plans don't work together. You might both leave your share of the house to different people, creating a forced sale or co-ownership mess.
The fix: Coordinate your estate plans with each other. Even if you have separate trusts for separate property, shared assets need joint planning.
Questions to coordinate:
- What happens to the family home?
- How are joint accounts handled?
- What about shared investments or businesses?
Mistake 5: Ignoring Life Insurance Opportunities
The problem: You want to provide for both your spouse and your children, but assets are limited. Leaving everything to your spouse means children wait (or get nothing); leaving everything to children shortchanges your spouse.
The fix: Life insurance creates additional assets that can solve this dilemma:
- Policy benefiting spouse ensures their financial security
- Separate policy benefiting children provides their inheritance
- No one has to choose between their loved ones
Consider: Second-to-die policies, which pay when both spouses have passed, can be cost-effective for providing for children.
Mistake 6: Making Your Spouse the Sole Trustee
The problem: If your spouse is the sole trustee of a trust meant to benefit both them and your children, there's an inherent conflict of interest. They control how much goes to your children and when.
The fix: Consider:
- An independent co-trustee
- A trust protector who can remove a misbehaving trustee
- Clear distribution standards that limit trustee discretion
- Regular accounting requirements
Mistake 7: Not Planning for Long-Term Care
The problem: Long-term care costs can devastate an estate. If your spouse needs nursing home care, assets you expected to pass to children may be spent on care instead.
The fix:
- Consider long-term care insurance
- Understand Medi-Cal (Medicaid) planning options
- Structure assets to protect some for children while ensuring spouse can qualify for benefits if needed
Note: Medi-Cal planning is complex and must be done carefully to avoid penalties and preserve benefits.
Mistake 8: Forgetting About Digital and Military Assets
The problem: Modern families have digital assets (online accounts, cryptocurrency, digital photos) and, for military families, service-specific benefits. These often fall through the cracks.
The fix:
- Create a digital asset inventory
- Document access credentials securely
- Include digital assets in your estate plan
- For military families: coordinate SGLI, SBP, and VA benefits with your estate plan
Mistake 9: Creating Separate Plans That Create Conflict
The problem: You and your spouse each create separate trusts, but they conflict with each other or with joint property ownership. The result is confusion, delay, and potential litigation.
Common conflicts:
- Both spouses trying to control the same asset
- Inconsistent provisions about the family home
- Contradictory instructions about children
The fix: Even with separate trusts, coordinate:
- How joint property is handled at first death
- What happens to the family home
- How each spouse's plan affects the other's beneficiaries
Mistake 10: Not Having the Hard Conversations
The problem: You avoid discussing money, prior marriages, children, and inheritance with your spouse. You each assume the other agrees, or you hope it will "work out."
The fix: Have explicit conversations about:
- What you each want for your biological children
- Whether stepchildren will inherit
- How you'll balance spouse vs. children's interests
- What happens if the marriage ends in divorce
These conversations are uncomfortable but essential. An experienced estate planning attorney can facilitate them.
Building a Second Marriage Estate Plan That Works
At Bordeaux Legacy Law, we understand second marriages because we live them. We help couples navigate these complex dynamics with:
- Clear analysis of separate vs. community property
- Trust structures that balance spouse and children's needs
- Coordination between each spouse's plan
- Regular reviews as your family evolves
Frequently Asked Questions
Do we need a prenuptial agreement if we're doing estate planning?
They serve different purposes. A prenuptial agreement addresses property division if you divorce. Estate planning addresses what happens if you die. Many second-marriage couples benefit from both, and they should be coordinated to avoid conflicts.
Can my new spouse change my estate plan after I die?
If you leave assets outright to your spouse, they have complete control and can do whatever they want—including changing their own plan to exclude your children. A trust with clear terms and independent trustee protection prevents this.
What if my children don't get along with my new spouse?
This is common and makes trustee selection even more important. Consider an independent professional trustee who has no loyalty to either side. Also ensure your trust has clear terms that limit discretion and potential for conflict.
Should we have separate or joint estate plans?
Many second-marriage couples benefit from separate trusts for separate property, with coordination on shared assets. This allows each spouse to provide for their own children while still planning together for community property.

