• Menu
  • Skip to right header navigation
  • Skip to main content
  • Skip to secondary navigation
  • Skip to primary sidebar
  • Skip to footer

Before Header

Call us today for help!  (631) 265-0599
  • Facebook
  • Instagram
  • LinkedIn
  • Pinterest
  • Twitter
  • YouTube

Eghrari Law Firm

Long Island Elder Law & Estate Planning

  • Home
  • Who We Are
    • About Our Firm
    • Meet Our Team
  • Resources
    • Client Resources
      • Definitions
      • Docubank
      • Elder Law Resources
        • Brentwood Elder Law
        • Central Islip Elder Law
        • Commack Elder Law
        • Hauppage Elder Law
        • Smithtown Elder Law
      • Estate Planning Resources
        • Estate Planning Check Up
        • Estate and Gift Tax Figures
        • Estate Planning Techniques
        • Estate Planning Worksheet
        • FREE Estate Planning Seminars
        • Long Island Estate Planning Resources
      • New York Medicaid Resources
        • Medicaid Planning Worksheet
      • Nursing Home Resources
      • Probate Resources
        • Brentwood Probate
        • Central Islip Probate
        • Commack Probate
        • Hauppage Probate
        • Smithtown Probate
        • Suffolk County Probate Resources & Checklist
      • Presentations
      • Retirement Planning Checklist
      • Trust Administration Resources
    • Elder Law Reports
    • Frequently Asked Questions
      • Business Planning
      • Estate Planning
      • Families Without an Estate Plan
      • Incapacity Planning
      • LGBTQ Estate Planning
      • Medicaid Planning
      • Probate
      • Trust Administration
      • Trust Administration & Probate
      • Wills and Trusts
    • Reports
  • Estate Planning
    • Asset Protection & Business Planning
    • Estate and Gift Tax Figures
    • Estate Planning Services
    • Family-Owned Businesses
    • Incapacity Planning
    • Legacy Planning
    • SECURE Act
    • Special Needs Planning
    • Trust Administration & Probate
    • Young Families
  • Elder Law
    • Coping With Alzheimer’s
    • Emergency Medicaid & Nursing Home Planning
    • Hospice Care
    • Medicaid Planning
  • Areas We Serve
    • Long Island
    • Nassau County
      • Oyster Bay
    • Suffolk County
      • Brentwood
      • Central Islip
      • Commack
      • Hauppauge
      • Smithtown
  • Blog
  • Contact Us

Mobile Menu

  • Home
  • Who We Are
    • About Our Firm
    • Meet Our Team
  • Resources
    • Client Resources
      • Definitions
      • Docubank
      • Elder Law Resources
        • Brentwood Elder Law
        • Central Islip Elder Law
        • Commack Elder Law
        • Hauppage Elder Law
        • Smithtown Elder Law
      • Estate Planning Resources
        • Estate Planning Check Up
        • Estate and Gift Tax Figures
        • Estate Planning Techniques
        • Estate Planning Worksheet
        • FREE Estate Planning Seminars
        • Long Island Estate Planning Resources
      • New York Medicaid Resources
        • Medicaid Planning Worksheet
      • Nursing Home Resources
      • Probate Resources
        • Brentwood Probate
        • Central Islip Probate
        • Commack Probate
        • Hauppage Probate
        • Smithtown Probate
        • Suffolk County Probate Resources & Checklist
      • Presentations
      • Retirement Planning Checklist
      • Trust Administration Resources
    • Elder Law Reports
    • Frequently Asked Questions
      • Business Planning
      • Estate Planning
      • Families Without an Estate Plan
      • Incapacity Planning
      • LGBTQ Estate Planning
      • Medicaid Planning
      • Probate
      • Trust Administration
      • Trust Administration & Probate
      • Wills and Trusts
    • Reports
  • Estate Planning
    • Asset Protection & Business Planning
    • Estate and Gift Tax Figures
    • Estate Planning Services
    • Family-Owned Businesses
    • Incapacity Planning
    • Legacy Planning
    • SECURE Act
    • Special Needs Planning
    • Trust Administration & Probate
    • Young Families
  • Elder Law
    • Coping With Alzheimer’s
    • Emergency Medicaid & Nursing Home Planning
    • Hospice Care
    • Medicaid Planning
  • Areas We Serve
    • Long Island
    • Nassau County
      • Oyster Bay
    • Suffolk County
      • Brentwood
      • Central Islip
      • Commack
      • Hauppauge
      • Smithtown
  • Blog
  • Contact Us

Proving Lack of Testamentary Capacity in a New York Will Contest

Lack of testamentary capacity New York

The death of a loved one is typically followed by a period of grief and heightened emotions. It is during this time that the legal process of probating the decedent’s estate gets underway. One function of probate is to authenticate the Last Will and Testament filed with the court if a Will was located. As such, any challenges to the Will’s validity are raised and litigated during this time frame. For anyone contemplating a Will challenge, the Long Island attorneys at Eghrari Law Firm discuss proving lack of testamentary capacity in a New York Will contest.

Probate Basics

Probate is the legal process that is usually required to settle the estate of someone who recently passed away. At the end of the probate process, the decedent’s remaining assets are transferred to the beneficiaries and/or heirs of the estate. First, however, the court must authenticate the decedent’s Last Will and Testament if one was submitted to the court. If a Will is submitted and authenticated, the terms of the Will are used to determine how the decedent’s assets are distributed at the end of the probate process.

What Does It Mean to Contest a Will?

When a Will is submitted to Surrogate Court (the court that typically handles probate), any “interested” person may contest the validity of the Will. An “interested” person may be a beneficiary under the Will submitted for probate, a beneficiary under a previous Will, a legal heir to the estate, or even a creditor of the estate. You cannot challenge a Will simply because you are not happy with the terms of the Will. Instead, you must have legal grounds for which the Will could be declared invalid. In New York, that means you must allege (and prove) that the Will was not properly executed, was the product of undue influence, or that the Testator (person who signed the Will) lacked the requisite testamentary capacity needed to execute a Will. If you successfully prove that the Testator lacked testamentary capacity (or another available ground) the court will declare the Will invalid and look for another valid Will to use when probating the estate. If a valid Will is not located, the estate is probated using the New York intestate succession laws.

What Does Lack of Testamentary Capacity Mean in New York?

New York law requires a Testator to be at least 18 years old and “of sound mind and memory” (testamentary capacity) to execute a Last Will and Testament. One way to successfully contest a Will is to prove that the Testator lacked the testamentary capacity necessary to execute the Will at the time the Will was signed. The law starts with the presumption that a Testator did have the necessary testamentary capacity, meaning that the person contesting the Will has the burden of proving that the Testator lacked capacity. Furthermore, it is important to understand that the issue of testamentary capacity applies at the time the Will was executed. This distinction is particularly important when a Testator was suffering from dementia because during the earlier stages a dementia sufferer may have extremely lucid periods followed by periods where cognitive function is clearly impaired.

New York courts have interpreted the “sound mind and memory” requirement to mean that a Testator must understand:

  • The natural objects of their bounty and their relations with them.
  • The nature and extent of his/her property.
  • The nature and consequences of executing a Will.

In simple terms, a Testator must understand the property they own, who would inherit that property without a Will, and what effect the Will they are creating has on their property and their legal heirs. To successfully contest a Will in New York based on lack of testamentary capacity, you must prove that the Testator did not understand one or more of these things at the time the Will was executed.

Are You Contemplating a New York Will Contest?

For more information, please join us for an upcoming FREE seminar. If you are contemplating a New York Will contest based on lack of testamentary capacity, contact the Long Island probate attorneys at Eghrari Law Firm by calling us at 631-265-0599 to schedule your appointment.

  • Author
  • Recent Posts
Eghrari Law Firm
Eghrari Law Firm
Mark S. Eghrari is an attorney in private practice in Smithtown, New York. He has been in practice since 1988. Mark S. Eghrari provides extensive estate and tax planning services to individuals and businesses. Mr. Eghrari’s primary focus is helping clients avoid probate, minimize or eliminate Federal and State Estate taxes and protect their assets from the high cost of nursing care, if they become ill Read More!
Eghrari Law Firm
Latest posts by Eghrari Law Firm (see all)
  • The Importance of Advance Directives When Planning for Incapacity in New York - July 30, 2026
  • 12 Essential Steps in New York Trust Administration - July 22, 2026
  • Common Asset Protection Mistakes That Could Put Your Estate at Risk in New York - July 15, 2026

About Eghrari Law Firm

Mark S. Eghrari is an attorney in private practice in Smithtown, New York. He has been in practice since 1988. Mark S. Eghrari provides extensive estate and tax planning services to individuals and businesses. Mr. Eghrari’s primary focus is helping clients avoid probate, minimize or eliminate Federal and State Estate taxes and protect their assets from the high cost of nursing care, if they become ill Read More!

Previous Post: «Beneficiary estate plan How to Handle the Black Sheep Beneficiary in Your Estate Plan
Next Post: Should I Include a Memorandum of Intent with My Special Needs Trust? Memorandum of Intent»

Primary Sidebar

Blog subscription

Subscribe to our Blog for the latest estate planning news and updates!

  • This field is for validation purposes and should be left unchanged.

Follow Us

  • Facebook
  • Instagram
  • LinkedIn
  • Pinterest
  • Twitter
  • YouTube

Where We Are

Eghrari Law Firm
50 Karl Avenue, Suite 202
Smithtown, NY 11787
Phone: (631) 265-0599
Fax: (631) 265-0754

See Larger Map
Get Directions

Office Hours

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 2:00 PM

Map

map for Eghrari Law Firm office

Footer

Office Location

Eghrari Law Firm
50 Karl Avenue, Suite 202
Smithtown, NY 11787
Phone: (631) 265-0599
Fax: (631) 265-0754

See Larger Map
Get Directions

Office Hours

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 2:00 PM

Sign Up for Our Newsletter

Sign up to get our free estate planning newsletter for all of our tips and resources

  • This field is for validation purposes and should be left unchanged.

Plan for Your Future & Protect Your Legacy

There’s a lot that goes into setting up a comprehensive estate plan, but with our FREE worksheet, you’ll be one step closer to getting yourself and your family on the path to a secure and happy future.

  • This field is for validation purposes and should be left unchanged.
Carroll image
  • Disclaimer
  • Privacy Policy
  • Sitemap
  • Contact Us

Site Footer

ATTORNEY ADVERTISEMENT

Copyright © 2026 American Academy of Estate Planning Attorneys · All Rights Reserved