The Relevance of Capacity to a Will

The Relevance of Capacity to a Will

By:

Posted March 6, 2019

When you choose to prepare estate planning documents such as a will and powers of attorney for property and personal care, it is a pre-condition for signing those documents that you have the capacity to sign them.  “Capacity” means the ability to fully understand what you are signing and the effect of what you are signing.

For example, when preparing a will, you must be able to understand the nature of the assets that you own and their approximate value.  In addition, of course, you must be able to understand the relationships around you – of family and friends – in order to be able to appreciate who the people are around you that you plan to leave the assets to, as well as the family/friends who you plan to leave out of your will. You must also be able to understand the effect of signing a will and what it means for your estate and those around you who are/aren’t in your will.

These days, there has been an explosion of litigation around the issue of capacity – disappointed beneficiaries, not happy that they have been left out of your will, have been challenging the will on the basis of lack of capacity of the will-maker.  So how do you counter the risk of having your will be challenged in this manner? Well, a number of years ago, the Province of Ontario created a licensing process for a “Capacity Assessor,” a qualified professional, most often a psychologist, who has received specialized training in assessing capacity.  It is often that we are presented with a client whose capacity may be in question due to age or other factors, or whose will we are concerned may later be challenged, that we will recommend that the will-maker retain a licensed capacity assessor to assess his/her capacity at the time that the will instructions are given to us.  This is a sure-fire way of reducing the risk of a will being challenged on the basis of lack of capacity.

A capacity assessor can also assist in determining whether a will-maker’s instructions are really his/her instructions, or whether he/she is under the ‘undue influence’ of someone who has convinced the will-maker to write his/her will in a particular way.

So, when it comes time for you to prepare your will (or look at possible changes), consider the benefits that a Licensed Capacity Assessor might add to the strength of your estate plan.

This blog post was written by Ted Mann, a Partner in the Wills and EstatesReal EstateBusiness and Bankruptcy teams.    He can be reached at 613-369-0368 or at ted.mann@mannlawyers.com.

More Resources

Blog |
Wills, Trusts and Estates
By: 
The American writer, William Faulkner wrote that the past isn’t dead. It isn’t even past. Indeed, early Roman values (up to 500BC) are alive and[...]
Blog |
Environmental Law
By: 

Posted November 18, 2025

Per- and polyfluoroalkyl substances (PFAS) are a large class of synthetic compounds valued for their resistance to heat, water, and oil. Their chemical stability has[...]
Blog |
Wills, Trusts and Estates
By: 
Blowing out eighteen candles signifies more than a birthday in Ontario; it marks a significant milestone where young adults gain the legal right to vote,[...]
Blog |
Employment, Human Rights and Labour
By: 

Posted October 28, 2025

Ghosting candidates? What is this, recruitment or a haunted house? If you’ve ever poured your heart into a job interview only to be met with[...]
Blog |
Employment, Human Rights and Labour
By: 
A recent decision from the Ontario Superior Court, Baker v. Van Dolder’s Home Team Inc., 2025 ONSC 952 (Baker) provides helpful guidance for employers with[...]
Blog |
Business Law
By: 
You found the perfect location for your business and are now in the process of negotiating a sublease with the sublandlord, who is an existing[...]
Ted Mann (Retired)

Ted Mann (Retired)

As one of the founders of Mann Lawyers, I have been helping clients with real estate transactions, estate planning, estate matters and insolvency for over 30 years. I also have extensive commercial, corporate, and tax law experience. With every client I try to bring a fresh and creative approach, sensitive to your needs and circumstances, whether personal or business-related. I am also experienced in providing legal advice to individuals, same-sex couples, and organizations in the LGBTQ community. I graduated from Osgoode Hall in 1978 and was called to the Ontario Bar in 1980. I practiced law in Toronto and Prince Edward Island prior to moving to Ottawa in 1987.  I have practiced law here since then and am proud to call Ottawa home. Beyond my law practice, I am also passionate about life—enjoying swimming, pilates, skiing, kayaking and hiking. I am active in local theatre and music, frequently taking part... Read More

Read More About Ted Mann (Retired)