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Subsection 50(1) Election

Subsection 50(1) Election: Tax Relief for Bad Debts, Defunct Shares, and Bankrupt Corporations

When investors hold shares or debt in a company that becomes bankrupt, insolvent, or simply worthless, it can be difficult or oftentimes impossible to dispose of those securities. Defunct shares often cannot be traded once delisted, and even if they are sold, they typically generate only a nominal capital loss.

However, Canadian tax law offers a valuable solution: the Subsection 50(1) election under the Income Tax Act (ITA). This election allows taxpayers to crystallize a capital loss or allowable business investment loss (ABIL) even when they cannot sell the shares or debt.

What Does Subsection 50(1) Do?

Subsection 50(1) allows eligible taxpayers to claim a loss by deeming their worthless shares or bad debts to have been:

  • Disposed of for $0 (nil) at year-end, and
  • Immediately reacquired at an adjusted cost base (ACB) of $0

This creates a realized loss, even if no actual sale occurred.

Because many investors are unaware of this election, they often miss out on meaningful tax relief.

When Can You Use Subsection 50(1)?

Taxpayers may elect to claim a capital loss in two specific situations:

1) Subsection 50(1)(a): Bad Debts

A taxpayer may claim a capital loss if all three conditions are met:

  1. Condition 1 — The debt is a bad debt

The debt must be uncollectible at year-end. Courts consider factors such as:

  • History and aging of the debt
  • Debtor’s financial condition
  • General economic conditions
  • Reasonable, honest determination by the lender

CRA guidance states a debt is considered bad if:

  • All legal means of collection have been exhausted, or
  • The debtor is insolvent and unable to pay
  1. Condition 2 — The debt is owed at year-end

The debt must exist and still be owed by the debtor at the end of the taxation year when the election is made.

  1. Condition 3 — The loan was made for income-earning purposes.

Even interest-free loans may qualify if made to a corporation where the lender expects potential income in the future.

2) Subsection 50(1)(b): Worthless or Defunct Shares

A taxpayer may elect to claim a capital loss on shares when any one of these applies:

Situation A — The corporation became bankrupt during the year.

Situation B — A winding-up order was made under the Winding-Up and Restructuring Act.

Situation C — All four conditions below are met at year-end:

  1. The corporation is insolvent
  2. Corporation (and any controlled corporation) has ceased business activities
  3. Fair market value of the shares is nil; and 
  4. It is reasonable to expect the corporation will be dissolved, wound up, and not resume operations

This provision is helpful because the conditions may be met for multiple years, allowing taxpayers to file the election even if they missed the original timing.

How to File a Subsection 50(1) Election (Format + Requirements)

Unlike other elections, there is no official CRA form. CRA requires a signed letter attached to the tax return. The letter must include:

  • A statement that the taxpayer elects under Subsection 50(1) ITA
  • Name, address, and SIN
  • Description of the shares or debt
  • Adjusted cost base (ACB)
  • Date of bankruptcy or insolvency (if applicable)

For electronically filed returns

Supporting documents must still be submitted in writing with a cover letter confirming they support an e-filed return.

For small business corporations (SBCs)

The election must include:

  • Corporation name
  • Number and class of shares
  • ACB
  • Bankruptcy/winding-up details

Late-Filed Elections

CRA may accept late-filed Subsection 50(1) elections up to 10 calendar years after the original due date.

Penalty: The lesser of

  • $8,000, or
  • $100 per month from the original due date to the filing date

Taxpayers may request a waiver of penalties if:

  • Extraordinary circumstances prevented timely filing
  • A CRA action caused the delay
  • Financial hardship exists

Waivers are granted solely at CRA discretion.

Allowable Business Investment Loss (ABIL)

If the loss relates to:

  • Shares of a small business corporation (SBC), or
  • Debt owed by a Canadian-controlled private corporation (CCPC)

Then the loss may be considered a business investment loss, 50% of which becomes an allowable business investment loss (ABIL).

Why ABILs Are Valuable

  • Deductible against all income sources, not only capital gains
  • Carry back 3 years
  • Carry forward 10 years
  • After 10 years, unused ABIL converts into a net capital loss and can be carried forward indefinitely against capital gains

Important Terms and Notes 

Small Business Corporation (SBC)

Under the Income Tax Act (ITA), a small business corporation (SBC) is defined as a Canadian-controlled private corporation (CCPC) in which 90% or more of the fair market value of its assets are used in an active business carried on primarily in Canada.
This definition is essential for determining whether a capital loss may qualify as a business investment loss, potentially resulting in an Allowable Business Investment Loss (ABIL).

Superficial Loss Rules Do Not Apply

Ordinarily, when an investor disposes of capital property and reacquires it within a short window, the superficial loss rules can deny the loss. However, because the Subsection 50(1) election deems a disposition and immediate reacquisition, the superficial loss rules do not apply. This is an important advantage, as it ensures the taxpayer can claim the capital loss despite still owning the shares.

Advantage of Using Subsection 50(1)

One of the most attractive benefits of filing a 50(1) election is that the taxpayer can write off the investment while still retaining ownership. If the corporation later recovers financially, the shares may regain value. Any amounts recovered in the future are treated as capital gains, ensuring proper tax treatment without jeopardizing the initial loss claim.

Cease Trading Order (CTO)

A cease trading order does not automatically mean the conditions for Subsection 50(1) are met.
A CTO simply prevents a company’s shares from being traded because the company has failed to meet certain securities disclosure requirements. Importantly, the company may still be operating, meaning the shares may not meet the nil-value or insolvency tests required for a valid 50(1) election. Proper factual review is necessary before filing the election.

Application of Capital Losses

Capital losses can generally be applied only against capital gains.
The order of utilization is:

  1. Current-year capital gains
  2. Carry back to any of the three preceding tax years to reduce prior capital gains
  3. Carry forward indefinitely to offset capital gains in future years

This emphasizes why crystallizing a loss under 50(1) is valuable for long-term tax planning.

Supporting Documentation is Critical

In many cases, the CRA or the courts have denied Subsection 50(1) elections due to insufficient documentation.
Taxpayers should maintain detailed records, including:

  • Financial statements
  • Correspondence with the debtor
  • Evidence of insolvency
  • Collection attempts
  • Legal notices
  • Valuation information

Documentation should begin as soon as financial difficulties arise and be retained indefinitely.

Allowable Business Investment Loss (ABIL) Audits

ABIL claims are frequently subject to CRA audit, due to the significant tax advantages they provide.  The CRA may request:

  • Detailed questionnaires
  • Additional documentation
  • Evidence of SBC status
  • Proof that the debt or shares qualify

Taxpayers should be prepared to support their claim comprehensively.

Meaning of “End of the Tax Year” Under Subsection 50(1)

For Subsection 50(1), the end of the tax year refers to the taxpayer’s own tax year, not the corporation’s. This distinction matters because the deemed disposition and reacquisition occur in the taxpayer’s personal tax year, determining when the loss can be recognized.

Revoking a Subsection 50(1) Election

The CRA may, under subsection 220(3.2) and Regulation 600(b), accept a request to revoke a Subsection 50(1) election. However, revocation is permitted only in limited circumstances and is often subject to penalties under subsection 220(3.5).

When CRA May Permit Revocation

Revocation may be allowed when:

  • The taxpayer reasonably believed the debt was uncollectible
  • A valid election was filed
  • But the resulting loss was deemed nil under subparagraph 40(2)(g)(ii) (e.g., certain non-arm’s-length debts)

In such cases, revocation prevents a deemed $0 disposition and allows future collections to reduce the ACB rather than create a capital gain.

When CRA Will Refuse Revocation

CRA generally refuses revocations if they amount to retroactive tax planning, such as:

  • Attempting to undo an election to avoid the application of Subsection 50(1.1)
  • Attempting to take advantage of hindsight
  • Changing a tax outcome after results are known

Guidance is available in Information Circular IC 07-1, which outlines CRA’s criteria for accepting or rejecting revocation requests.

Contact Kalfa Law Firm for Guidance on Subsection 50(1) Elections

Navigating Subsection 50(1) elections, ABIL claims, and capital loss treatments can be complex and costly if handled incorrectly. Whether you’re dealing with a bad debt, defunct shares, or a bankrupt corporation, our experienced tax and corporate lawyers can help you determine eligibility, prepare the required documentation, and file your election properly.

If you suspect your investment has become worthless or you’re unsure how to proceed, speak with a Kalfa Law Firm professional today.

Book a consultation and get legal guidance before filing your next tax return.

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© Kalfa Law Firm 2020, Updated January 12, 2026

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