MacMillan Estate Planning Blog

The Tax Deadline Is Near — But Your Largest Tax Bill May Still Be Ahead

Written by The MacMillan Estate Planning Team | Apr 15, 2026 2:00:02 PM

 

As the April tax deadline approaches, many Canadians are focused on what they owe this year. 

For affluent families, however, the most significant tax liability is often not the one due today — but the one that arises in the future.

 

It is a reality that is often overlooked:

 

In Canada, death can trigger one of the largest tax events of your lifetime.

 

The Tax Bill Few Plan For

 

While annual tax planning is important, it is typically managed year by year — often with the guidance of an accountant.

 

Estate taxation, however, operates very differently.

 

Upon death, assets such as investment portfolios, real estate, and private company shares are often deemed disposed of, triggering capital gains tax. For high-net-worth families, this can result in a substantial tax burden — sometimes reaching into the millions.

 

Without proper planning, this tax is not optional, and it is often due within a relatively short timeframe.

 

When Wealth Becomes Illiquid

 

Many affluent families hold a significant portion of their wealth in assets that are not easily liquidated:

 

• Recreational properties

• Investment real estate

• Privately held businesses

 

As spring arrives, many families are returning to these properties — lake homes, vacation residences, and legacy assets that have appreciated significantly over time.

 

While these assets carry personal and financial value, they can also create a challenge:

 

How do you cover a large tax liability without being forced to sell something meaningful?

 

The Risk of Waiting Too Long

 

One of the most common misconceptions is that estate planning can be addressed later.

In reality, the most effective strategies are implemented well in advance, while options remain open and decisions can be made thoughtfully.

 

Waiting can limit flexibility, reduce available strategies, and increase the likelihood that families will need to make reactive — rather than intentional — decisions.

 

Planning Beyond the Annual Tax Cycle

 

For ultra-high-net-worth families, tax planning is not simply about minimizing what is owed this year.

 

It is about:

 

Structuring wealth for long-term efficiency

• Preserving assets across generations

• Ensuring liquidity is available when needed

• Protecting family harmony alongside financial outcomes

 

This level of planning requires a broader, more strategic approach — one that aligns tax considerations with your overall estate and legacy objectives.

 

A Thoughtful Approach to Legacy

 

With the right planning in place, it is possible to significantly reduce future tax exposure while maintaining control and clarity over how your estate will be managed.

 

More importantly, it allows families to move forward with confidence — knowing that their wealth is structured not only for today, but for the generations that follow.

 

Join Our Upcoming Educational Webinar

 

To help families better understand these considerations, we invite you to join our upcoming educational webinar:

 

Thursday, April 23 at 6:30 PM MT

 

During this session, we will discuss:

 

• The tax realities of transferring wealth in Canada

• Why the largest tax liability often occurs at death

• Planning strategies designed to reduce future tax exposure

• How to protect both assets and family harmony

 

To reserve your seat, please register online:

 

https://www.macmillanestate.com/seminars

 

Or contact our office at 1-833-266-6464.