Do I need a will if I already have a living trust?

Yes. Even with a living trust, you need a 'pour-over will' to capture any assets that weren't transferred into the trust during your lifetime. More importantly, a will is where you name a guardian for your minor children, something a trust cannot do.

What happens if both parents die without naming a guardian?

A family court will appoint a guardian based on the child's best interests. This could be a family member you would have chosen, or it might not be. Without a written nomination in your will, you have no say in that decision. It's one of the most important reasons to create an estate plan as soon as you have children.

Does a living trust avoid estate taxes?

A standard revocable living trust does not reduce estate taxes. Its main benefit is avoiding probate and enabling smoother asset distribution. To minimize estate taxes, high-net-worth couples typically use irrevocable trusts, AB trusts, or other advanced strategies. Consult an estate attorney for tax-specific guidance.

How often should married couples update their estate plan?

At minimum, every three to five years. But more urgently after major life changes such as a new child, a move to a different state, a divorce, a significant change in assets, or the death of someone named in your plan. An outdated estate plan can be nearly as problematic as having none at all.

Is estate planning different in California vs. New York?

Yes, in meaningful ways. California is a community property state, which affects how assets are owned, taxed, and transferred at death. New York has its own state estate tax with a much lower threshold than the federal exemption, meaning some families owe New York estate tax even when they owe no federal tax. Both states have specific probate rules that make it especially worthwhile to have a properly structured estate plan in place.

Estate Planning for Married Couples With Young Children - Complete Guide 2026

Q: What is the primary benefit of the marital deduction in estate planning?

The primary benefit is that it allows married spouses to transfer unlimited assets to each other, during life or at death, with no federal estate tax. This defers estate tax liability until the second spouse's death, giving the surviving spouse full access to the couple's combined wealth in the meantime.

You've built something real together. A life, a home, maybe a family that still measures bedtime in picture books and sippy cups. Estate planning probably isn't the first thing on your list. But for married couples with young children, it might be the most important financial conversation you haven't had yet. This guide breaks down everything you need to know about estate planning as a married couple with kids. What it covers, why it matters, how the marital deduction works, what tools to use, and where most couples go wrong. By the end, you'll know exactly what steps to take and why waiting isn't an option.

What Is Estate Planning for Married Couples and Why Does It Matter Now?

Estate planning is the process of deciding what happens to your assets, your children, and your finances if you die or become unable to make decisions. It's not just for the wealthy. It's for anyone with children, property, savings, or a life insurance policy.

For married couples with young children, the stakes are especially high. Without a plan in place, a court decides who raises your children. Your assets may go through probate, a slow, public, and often expensive court-supervised process. Your spouse might not have immediate access to accounts. Your wishes simply don't exist on paper.

The good news is that a proper estate plan doesn't have to be complicated. It just has to be done.

What Is the Primary Benefit of the Marital Deduction in Estate Planning?

The marital deduction is one of the most powerful tools in U.S. estate planning, and most couples don't know it exists.

Under federal law, married couples can transfer an unlimited amount of assets to each other, either during life or at death, completely free of federal estate tax. This is called the unlimited marital deduction. It means that when the first spouse dies, everything they own can pass to the surviving spouse with no federal estate tax due.

The primary benefit of the marital deduction is simple: it defers estate taxes until the second spouse dies, giving the surviving spouse full access to the couple's wealth during their lifetime.

However, there's an important nuance. The marital deduction only delays estate taxes. It doesn't eliminate them. When the surviving spouse later passes away, their estate may be subject to tax if it exceeds the federal exemption threshold. In 2025, that threshold is $13.99 million per person. In 2026, it rises to $15 million per person. For high-income couples, proper planning now, especially using tools like AB trusts, can help protect both exemptions.

This is not legal or tax advice. Consult a qualified estate attorney for guidance specific to your situation.

Key Components of an Estate Plan for Married Couples With Kids

A complete estate plan typically includes several interconnected documents. Here's what each one does and why it matters for families with young children.

Wills and Trusts

A Last Will and Testament is the foundation of any estate plan. It states who receives your assets, names an executor to manage your estate, and critically for parents, nominates a guardian for your minor children. Without a will, a judge makes that decision.

A Living Trust (also called a revocable trust) goes further. It holds your assets during your lifetime and transfers them directly to your beneficiaries after death, without going through probate. That means faster access for your family, more privacy, and less court involvement. For married couples with young children in California or New York, a living trust is often recommended alongside a will.

Powers of Attorney (POA)

A financial Power of Attorney allows your spouse, or another trusted person, to manage your finances if you're incapacitated. A healthcare directive (sometimes called a living will or medical POA) spells out your medical wishes and appoints someone to make healthcare decisions on your behalf. Both documents are essential. Without them, your family may need a court order to act on your behalf in a crisis.

Beneficiary Designations

Life insurance policies, retirement accounts (like 401(k)s and IRAs), and some bank accounts pass directly to named beneficiaries, completely outside of your will. This is often overlooked. If your beneficiary designations are outdated or inconsistent with your overall plan, they will override it. Review them after every major life event: a new child, a move, a divorce, or a significant change in assets.

Tax Planning

High-net-worth couples should consider how the federal estate tax exemption interacts with their combined wealth. The current exemption is $13.99 million per person in 2025, rising to $15 million in 2026. For couples with significant assets, AB trusts (also called bypass trusts) can help preserve both spouses' exemptions, potentially shielding up to $30 million from federal estate tax in 2026.

How to Name a Guardian for Your Child in Your Will

If both parents die before a child turns 18, a court appoints a guardian. That guardian will raise your child, manage their daily life, and make decisions about their education, health, and upbringing. Without a will, you have no say in who that person is.

In your will, you can nominate a guardian. Courts generally follow the parents' nomination unless there is a compelling reason not to. When choosing a guardian, consider:

Their values, parenting style, and relationship with your child
Their age, health, and willingness to take on the role
Geographic location, since a cross-country move may disrupt your child's life significantly
Whether to separate the guardian role from the trustee role, because the person managing money doesn't have to be the same person raising your child

Always have a conversation with your chosen guardian before naming them. And always name a backup in case your first choice is unwilling or unable to serve.

AB Trusts and Estate Tax Planning for High-Income Couples

An AB trust is a structure used by married couples to maximize use of both spouses' estate tax exemptions, not just one. Here's how it works in plain terms.

When the first spouse dies, the estate is split into two parts. The 'A Trust' (or Survivor's Trust) holds the surviving spouse's share. The 'B Trust' (or Bypass Trust) holds the deceased spouse's share, up to the exemption limit, and passes outside the surviving spouse's taxable estate. This way, when the second spouse dies, only their remaining assets are subject to estate tax, not the combined total.

For couples with combined assets above $15 million, this strategy can be meaningful. That said, the 2017 Tax Cuts and Jobs Act dramatically increased the exemption threshold, making AB trusts less urgent for many families than they once were. In 2026, the exemption rises to $15 million per person, meaning a married couple could collectively shelter up to $30 million from federal estate tax without an AB trust, by using portability rules properly.

Talk to a qualified estate planning attorney about whether an AB trust makes sense for your specific financial picture.

Special Considerations: Blended Families, Community Property, and Regular Updates

Blended Families

If either spouse has children from a previous relationship, estate planning becomes more complex and more important. Without careful planning, assets left to a surviving spouse could eventually pass entirely to their biological children, inadvertently cutting out children from prior relationships. Separate trusts and precise beneficiary designations can ensure each child is protected according to your wishes.

Community Property States

California is a community property state. This has significant implications for estate planning. In California, all assets acquired during the marriage are considered equally owned by both spouses. At the first spouse's death, all community property receives a full step-up in basis, meaning the asset's value is reset to its current market value for tax purposes, which can significantly reduce capital gains tax when the surviving spouse later sells the asset.
New York, by contrast, is an equitable distribution state. Assets are not automatically jointly owned. Each spouse may hold separate property, which requires careful coordination in wills and trusts to ensure both partners' wishes are honored.

Keeping Your Plan Updated

An estate plan is not a one-time document. Life changes, and your plan needs to keep up. Review your estate plan after any of the following: the birth or adoption of a child, a move to a new state, a divorce or remarriage, a significant change in assets, or the death of a named guardian, executor, or beneficiary. At minimum, review it every three to five years.

Common Estate Planning Mistakes Married Couples Make

Even well-intentioned couples make costly mistakes. Here are the most common ones to avoid.

Not naming a guardian. This is the biggest omission for parents of young children. If you have a child under 18, this alone is reason enough to create a will today.
Forgetting to update beneficiary designations. Old designations such as an ex-spouse, a deceased parent, or a child who is now an adult can derail your entire plan.
Assuming a will avoids probate. A will does not avoid probate. Only a properly funded living trust or correctly titled assets can do that.
Leaving assets directly to minor children. Minors cannot legally inherit large sums outright. A trust ensures the money is managed responsibly until they reach an appropriate age.
Not having a healthcare directive. In a medical emergency, your spouse may not automatically have the legal authority to make decisions on your behalf without this document.

How Neptune Helps Couples Get Ready for Estate Planning

Most couples know they need an estate plan. What they struggle with is knowing where to start, what to ask, and how to get on the same page before they ever walk into an attorney's office. That's exactly the gap Neptune was built to fill.

Neptune is a structured preparation platform designed specifically for couples navigating important financial and legal decisions together. Whether you're thinking about a prenuptial agreement, asset protection, or estate planning, Neptune gives you a clear, guided process to understand your options and align as a couple before the formal legal work begins.

Neptune is transparent about what it is and what it isn't. Neptune is not a law firm and does not provide legal advice. What it does is help couples prepare. It helps you identify what you have, what you want to protect, what questions to ask, and how to arrive at your attorney consultations informed, aligned, and ready to make decisions rather than spending expensive legal hours just figuring out the basics.

Think of it this way. The couples who get the most out of estate planning are the ones who show up prepared. They know what assets they're bringing to the table. They've talked through their wishes for their children. They understand the difference between a will and a trust. Neptune helps you become that couple.

For young families in New York and California especially, where property values, equity compensation, and state-specific tax rules add layers of complexity, having a structured starting point isn't just convenient. It's genuinely valuable.

The Right Time Is Now

Estate planning for married couples with young children isn't about expecting the worst. It's about making a clear-eyed decision to protect the people who depend on you most. A good plan covers your assets, protects your children, preserves your healthcare wishes, and takes full advantage of tools like the marital deduction and living trusts, before you ever need them.

The conversations that feel uncomfortable today are the ones that give your family clarity and security for years to come. You've already built something worth protecting. Now put it in writing.