Estate Planning · Plume Financial Services

"Just Put Your Kid on the Account"
— Why That Advice Could Cost Your Family Dearly

The real difference between a joint bank account and a segregated fund beneficiary designation — and why it matters more than ever.

Michael Plume, Plume Financial Services Inc., Estate Planning

If you've ever sat across from a bank advisor and heard the words,"Don't worry — just add your son or daughter to your account as a joint owner,"you're not alone. It's a common suggestion, offered with good intentions. But for many Canadians — particularly those approaching retirement or managing significant assets — it can create serious, unintended legal and financial consequences.

There is a fundamentally better alternative: a properly designated beneficiary on a segregated fund contract. And a recent court decision has made that distinction even more important to understand.

"A joint bank account and a beneficiary designation on a segregated fund are not the same thing — legally, practically, or for your estate."

What happens when you add a child to your bank account

When a bank suggests making your account "joint" with an adult child, they're typically trying to help you avoid probate, simplify account access, or make it easier for your child to handle your affairs. The intention is good. The legal reality, however, is complicated.

Under Canadian common law — and specifically following the Supreme Court of Canada's landmark Pecore decision — when a parent makes a gratuitous transfer to an adult child (like adding them to a bank account), the courts apply what's called the presumption of resulting trust. In plain language, this means the law presumes the adult child is holding that asset in trust for the estate — not that it was a gift to them — unless the child can prove otherwise.

This is especially problematic because the person who could best explain their original intent — the parent — has passed away. That leaves adult children in the difficult position of proving in court what their parent actually meant to do with those funds. The result? Estate litigation, family conflict, legal fees, and delays in distributing what should have been a straightforward inheritance.

There's another risk that gets overlooked entirely: when you add a child as a joint account holder, they have immediate access to those funds while you're still alive. You've given up a degree of control — and in some cases, Courts have found that the "gift of survivorship" becomes irrevocable, meaning you may not be able to change your mind later.

Joint bank account

What can go wrong

• Child has live access to funds immediately

• Presumption of resulting trust may apply

• Intent disputes end up in estate litigation

• Survivorship rights may become irrevocable

• Exposed to child's creditors or divorce proceedings

• No guarantee funds reach your intended heirs

Segregated fund beneficiary

What you actually get

• The beneficiary has no access until your death

• Intent is crystal clear — it's a death benefit

• No resulting trust presumption applies

• You can change your beneficiary at any time

• Bypasses probate cleanly and legally

• Creditor protection in many circumstances

Why are segregated fund beneficiary designations different

A segregated fund is an insurance product — and that distinction matters enormously from an estate planning perspective. When you name a beneficiary on a segregated fund contract, you are making a clear testamentary designation: you are stating, in writing, exactly who receives those assets upon your death.

There is no ambiguity about intent. The funds are only accessible on death, which is the very essence of what a beneficiary designation is. There is no joint ownership, no concurrent access, and no question of what the account holder "really meant." The named beneficiary receives the proceeds directly — outside the estate, outside probate, outside the reach of creditors in most situations.

Critically, you also retain full control while you're alive. You can update or change your beneficiary designation at any time — something that becomes far more complicated once you've added someone as a joint account holder.

A recent court decision confirms what we've always known

In April 2026, an Ontario court decision —Kukna Estate v. Giasson— provided welcome clarity on exactly this issue. The court found that the presumption of resulting trust that applies to joint bank accounts should not be applied to properly designated TFSA, RRSP, and RRIF beneficiaries.

Key findings — Kukna Estate v. Giasson (Ontario, 2026)

Joint accounts and beneficiary designations are legally distinct: unlike a joint account, a named beneficiary has no access to the funds during the account owner's lifetime.

RRIFs and TFSAs cannot have joint ownership — the mechanism simply doesn't exist — making the resulting trust analysis inapplicable.

The account holder retains the right to change beneficiaries at any time, maintaining a level of control that doesn't exist in jointly-held assets.

These accounts are governed by provincial statute (such as the Succession Law Reform Act), not common law — further distinguishing them from joint bank accounts.

While this is a lower court decision and may yet be appealed, it reinforces the legal and planning rationale for using named beneficiaries on registered accounts and insurance products rather than relying on joint ownership as an estate planning shortcut. It also strengthens the case that these same protections extend to life insurance and segregated fund contracts, which are governed by provincial Insurance Acts.

What this means for your family

If you've been told to simply add a child to your accounts "to make things easier," it's worth having a proper conversation about whether that strategy truly achieves your goals — or whether a segregated fund with a named beneficiary might accomplish the same objectives more cleanly, with fewer risks.

Segregated funds offer something the bank can't match: a legally robust, creditor-protected, probate-bypassing transfer of wealth that is clear in its intent, flexible during your lifetime, and efficient at the time it matters most — when your family needs certainty, not a courtroom.

This is precisely why I work with segregated funds through iA Financial Group. For clients who want to ensure their money goes exactly where they intend — without ambiguity, without litigation risk, and without giving up control while they're still alive — a proper beneficiary designation on a segregated fund contract is the right tool.

If you'd like to review your current account structure and beneficiary designations, I'd be glad to walk through it with you — no obligation, just clarity.

Let's talk estate planning ↗

This article is for general information purposes only and does not constitute legal or tax advice. Estate planning involves complex legal considerations — please consult a qualified estate lawyer regarding your specific circumstances. Michael Plume is a licensed insurance and investment advisor in New Brunswick and Nova Scotia. Segregated funds are offered through iA Financial Group.