12 Estate Planning Mistakes Married Couples Make

The 12 Estate Planning Mistakes Married Couples Make (and the Fix for Each)

The most frequent estate planning errors come down to three categories: missing documents, misaligned accounts, and failing to revisit the plan. Each mistake below has a direct fix you can act on.

1. Not having a will (dying intestate). Without a will, your state's intestacy laws dictate who receives your assets, and the result often doesn't match what you'd choose. A court appoints an executor, and the process can freeze accounts for months. Fix: Draft a will that names beneficiaries, an executor, and (if applicable) guardians for minor children.
2. Relying only on "leave everything to my spouse" with no contingent plan. If both spouses pass in the same accident, or one spouse is unable to receive the estate, assets with no contingent beneficiary fall into probate. Fix: Name contingent beneficiaries in your will and on every account.
3. Outdated or missing beneficiary designations. A 2024 Caring.com survey found that more than half of Americans don't have a will, and even fewer have reviewed their account beneficiary forms recently. Old designations can send a 401(k) or life insurance payout to an ex-spouse. Fix: Audit every retirement account, life insurance policy, and payable-on-death account at least once a year.
4. Beneficiary designations that conflict with the will. A beneficiary designation on a financial account overrides whatever your will says. If your will leaves everything equally to three children but your IRA names only one, that one child gets the full IRA. Fix: Cross-check every designation against your will and trust documents.
5. Asset titling that defeats your intended distribution. Assets held in joint tenancy pass automatically to the surviving joint tenant, outside the will entirely. The Smithsonian Institution's estate planning guide offers a clear example: a parent's will may split assets equally among children, but a bank account titled jointly with one child goes only to that child. Fix: Review how each asset is titled (individual, joint, TOD/POD, or in trust) and confirm it matches your overall plan.
6. No plan for incapacity. Without a durable power of attorney and a healthcare directive, your spouse may need a court order to manage your finances or make medical decisions. Fix: Execute a durable financial power of attorney, a healthcare proxy or advance directive, and a HIPAA authorization so your spouse and medical team can communicate freely.
7. Failing to update after marriage, remarriage, divorce, or new children. Life changes can void or complicate existing documents. Many states have laws that automatically revoke bequests to a former spouse upon divorce, but not all, and new marriages may not automatically add a spouse to older documents. Fix: Review and update your entire plan after every major life event.
8. Not naming guardians for minor children. If both parents die without naming a guardian, a court decides who raises your children. Fix: Designate a guardian (and an alternate) in your will, and discuss it with the people you've chosen.
9. Forgetting about state estate taxes. You may be well under the $15 million federal exemption per person in 2026, yet still owe state estate tax. More than a dozen states and the District of Columbia impose their own estate or inheritance taxes, often with much lower thresholds. Fix: Check your state's rules and plan accordingly, especially if you own property in more than one state.
10. Not using a revocable living trust to avoid probate. A revocable living trust lets assets bypass probate court entirely, transferring to beneficiaries faster and privately. A companion "pour-over" will catches anything you didn't transfer into the trust. Fix: Evaluate whether a revocable trust makes sense for your situation, especially if you own real estate in multiple states or want to avoid public probate records.
11. Ignoring recent legislation changes. The One Big Beautiful Bill Act, signed in July 2025, permanently raised the federal estate and gift tax exemption to $15 million per individual ($30 million for married couples) in 2026, indexed for inflation. Plans built around the old $5 million base or the pre-2026 sunset may need restructuring. Fix: Have your attorney review trusts and formulas drafted under prior exemption levels.
12. Never discussing the plan or storing documents where the surviving spouse can find them. A Kiplinger-Morning Consult survey found that roughly two in five families have never discussed inheritance plans. If your spouse doesn't know the plan exists, or can't locate the documents, the plan effectively doesn't exist. Fix: Store originals in a fireproof safe or with your attorney, share copies and access details with your spouse and named fiduciaries, and discuss the plan together.

Why Estate Planning Changes After You Get Married

Marriage rewrites the default rules for your money, your medical decisions, and your legacy. It unlocks spousal exemptions and joint ownership options that didn't exist when you were single, but it also means every estate planning decision is now a two-person conversation.

Under federal law, transfers between spouses are exempt from estate tax through the unlimited marital deduction. And if one spouse dies without using their full estate tax exemption, the surviving spouse can claim the unused portion through "portability," effectively doubling the combined exemption. In 2026, that means a married couple can pass up to $30 million free of federal estate tax.

But these benefits only work if your documents are coordinated. A will drafted before marriage, a retirement account still naming a parent as beneficiary, or a home titled only in one spouse's name can each create gaps that default rules won't fill the way you expect.

As Michael C. Cotugno, Esq., Managing Partner of Neptune Legal, explains: "Understanding a partner's relationship with money, their historical experiences of abundance or scarcity, their anxieties tied to financial stability, or their personal definitions of success, allows for a deeper, more empathetic understanding of them as a whole individual."

That kind of financial openness isn't just good for the relationship. It's the foundation for an estate plan that actually works. Before you draft a single document, sit down together and talk through your financial histories, your goals, and what you each want to happen if the worst case arrives.

How to Fix Beneficiary and Titling Mistakes Step by Step

Audit every account's beneficiary designation and asset title, then align them with your overall estate plan. This is the single highest-impact maintenance task most couples skip.

Here's how to do it:

1. List every financial account. Include 401(k)s, IRAs, pensions, life insurance policies, brokerage accounts, bank accounts, and any payable-on-death (POD) or transfer-on-death (TOD) registrations.
2. Pull the current beneficiary designation for each account. Contact each institution or log in online. Note the primary beneficiary and any contingent beneficiary.
3. Review asset titling. For each account and piece of real estate, confirm how it's titled: solely owned, joint tenancy with right of survivorship, tenancy by the entirety, community property, or held in a trust.
4. Compare designations and titles against your will and trust. Flag any conflicts. Remember: beneficiary designations and joint titling override your will.
5. Update where needed. For most accounts, you can update beneficiary forms directly with the financial institution. For real estate or trust funding, you may need a new deed or account retitling, which is often where a qualified estate attorney helps.
6. Document your completed audit. Keep a master list with account names, institutions, designation dates, and titling. Store it with your estate documents.

Example of a titling mismatch: A couple's will says "divide all assets equally among our three children." But a savings account is held in joint tenancy with only one child (added years ago for convenience). When the surviving parent dies, that account passes automatically to the one joint-tenant child, and the other two children receive nothing from it. The will never controls that asset.

You can update most beneficiary forms yourself, but consult an estate planning attorney when you need to retitle real estate, fund a trust, or when you're dealing with blended family dynamics that require careful coordination.

Estate Taxes Married Couples Should Plan For in 2026

Most married couples owe zero federal estate tax. With the exemption at $15 million per person ($30 million combined) in 2026, fewer than 0.2% of estates are affected at the federal level. But state taxes and ownership details can still create a bill.

Portability and the marital deduction. The unlimited marital deduction means you can leave everything to your surviving spouse tax-free. Portability then lets the surviving spouse use whatever portion of the first spouse's $15 million exemption went unused. To claim portability, the executor must file an estate tax return (IRS Form 706) for the first spouse to die, even if no tax is owed.

Life insurance and "incidents of ownership." Life insurance death benefits are income-tax-free, but if the insured owned the policy at death, the proceeds count toward the taxable estate. For larger estates, transferring the policy to an irrevocable life insurance trust (ILIT) removes it from the estate.

Revocable trusts and taxes. A revocable living trust avoids probate, but it does not reduce estate tax. The trust's assets are still part of your taxable estate while you're alive and have the power to revoke it.

When to get professional help. If your combined estate (including life insurance, retirement accounts, and real estate) approaches your state's threshold or the federal exemption, consult a qualified estate tax attorney. Strategies such as gifting, irrevocable trusts, and family-limited partnerships can reduce exposure, but they require careful implementation.

The Core Documents Every Married Couple Should Have

Every married couple needs, at minimum, five types of documents: a last will and testament, a durable financial power of attorney, a healthcare directive (advance directive or living will), a HIPAA authorization, and, depending on circumstances, a revocable living trust.

• Last will and testament. Names who receives your assets, appoints an executor, and designates guardians for minor children. Without it, state intestacy laws control.
• Revocable living trust. Holds titled assets and transfers them to beneficiaries without probate. You maintain full control and can amend it at any time. Especially valuable if you own real estate in multiple states or want to keep your estate private.
• [Pour-over will](https://meetneptune.com/blog/pour-over-will-living-trust). Works alongside a revocable trust. Any assets not formally transferred to the trust during your lifetime are "poured over" into it at death, so they're still distributed according to your wishes rather than falling into intestacy.
• Durable financial power of attorney. Authorizes a trusted person (typically your spouse) to manage your finances if you become incapacitated. Without it, your spouse may need a court-granted conservatorship, a slow and expensive process.
• Healthcare directive (advance directive / living will). States your wishes about medical treatment if you can't communicate them yourself, including end-of-life care preferences.
• HIPAA authorization. Allows named individuals to access your medical records. Without it, privacy laws can prevent your spouse from getting critical health information.
• Guardianship designations. Named in the will, these designate who will care for your minor children if both parents die. Always name an alternate guardian as well.

What you can do online vs. what needs professional help. Updating beneficiary forms and organizing a financial inventory are straightforward tasks you can do yourself. Drafting wills, trusts, and powers of attorney typically requires a licensed attorney to ensure the documents comply with your state's execution requirements (witness and notarization rules vary). Healthcare directives often have state-specific forms available through hospitals or your state's bar association.

A Step-by-Step Estate Planning Checklist for Couples

Start with an inventory, move through the documents, and build in a regular review cycle. Here is the sequence:

1. Take a joint financial inventory. List all assets (real estate, accounts, insurance policies, business interests, debts) and note how each is titled and who is named as beneficiary.
2. Discuss your wishes together. Talk about inheritance goals, guardianship preferences, healthcare directives, and charitable giving. This conversation is the plan's foundation.
3. Choose your fiduciaries. Decide who will serve as executor, trustee, power of attorney agent, and healthcare proxy. Discuss it with them before finalizing.
4. Draft your documents. Work with a qualified estate planning attorney to create or update wills, trusts, powers of attorney, healthcare directives, and HIPAA authorizations.
5. Fund the trust. If you create a revocable living trust, retitle assets (bank accounts, brokerage accounts, real estate deeds) into the trust's name. An unfunded trust provides no probate benefit.
6. Align all beneficiary designations. Update primary and contingent beneficiaries on every retirement account, life insurance policy, and TOD/POD account so they match the overall plan.
7. Store and share. Keep originals in a secure location (fireproof safe, attorney's office, or both). Give copies and access instructions to your spouse, executor, and backup fiduciary.

When to Review and Update

Review your complete estate plan every 3 to 5 years. In addition, revisit it immediately after any of these triggers:

• Marriage or remarriage
• Divorce
• Birth or adoption of a child
• Death of a beneficiary or fiduciary
• Move to a different state (different estate tax rules, different execution requirements)
• Major change in assets (inheritance, business sale, large purchase)
• New legislation affecting estate or gift taxes

Estate planning isn't a one-time task. As Michael C. Cotugno, Esq., Managing Partner of Neptune Legal, puts it: "The real work, the true magic, lies in the ongoing practice of conscious partnership each and every day." The same principle applies here. The best estate plan is one you build together and revisit as your life evolves.