In a tax and corporate practice focused on private companies, tax exposure rarely arises from novel planning concepts. More often, it results from technical rules that are well known in principle but misunderstood in application.

Many readers have asked me to address recurring issues encountered in practice. Over the course of advising on reorganizations, estate freezes, post-mortem planning, and insurance-funded liquidity strategies, I have observed repeated execution errors involving corporate-owned life insurance and capital dividend account (“CDA”) balances.

These issues typically do not stem from aggressive planning. Rather, they are mechanical missteps — most commonly:

• Miscalculations of CDA additions arising from incorrect assumptions about how the adjusted cost basis (“ACB”) of a life insurance policy affects the CDA; or
• A failure to verify the policy’s ACB prior to implementing post-mortem or liquidity planning.

One recurring and particularly costly error concerns the assumption that the full death benefit automatically increases a corporation’s CDA balance. That assumption is incorrect.

Subsection 89(1) of the Income Tax Act (Canada) provides that a corporation’s CDA is increased by the amount by which life insurance proceeds received as a consequence of death exceed the policy’s ACB immediately before death. The CDA addition is not equal to the gross death benefit.

Failure to apply this formula precisely can result in significant Part III tax exposure.

Why CDA is Frequently Overstated

In practice, CDA overstatements commonly arise because:

• Advisors neglect to reduce the CDA addition by the policy’s ACB
• Many permanent life insurance policies eventually have a nil ACB, leading to the assumption that all policies will behave similarly
• The policy’s ACB is not independently confirmed with the insurer prior to declaring a capital dividend.

While a nil ACB outcome is common in long-standing policies, it is not universal. The ACB can remain material, particularly where policies are newer, structured differently, or have undergone changes.

Illustrative Example

Assume:

• Death benefit: $10,000,000
• ACB immediately before death: $1,200,000

CDA addition:

$10,000,000 – $1,200,000 = $8,800,000

If the corporation elects to pay a $10,000,000 capital dividend on the assumption that the full proceeds are creditable to the CDA, the excess $1,200,000 results in a Part III tax liability.

At the current 60% Part III tax rate, this results in:

$1,200,000 × 60% = $720,000 of unintended tax

This is not a theoretical risk. In practice, these errors have resulted in material and entirely avoidable tax liabilities.

Key Takeaways

Corporate-owned life insurance remains one of the most effective liquidity and succession planning tools available to private corporations. However, the CDA is a technical statutory account that requires precision.

Before declaring a capital dividend funded by life insurance proceeds:

• Confirm the policy’s ACB directly with the insurer;
• Reconcile the CDA balance carefully; and
• Ensure the capital dividend election reflects the correct statutory computation.

In this area, small mechanical errors can produce significant tax consequences.