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Deductibility of acquisition interest (s. 20(1)(c))

Deductibility of acquisition interest is whether interest on money borrowed to buy a business can be deducted. Paragraph 20(1)(c) of the Income Tax Act allows interest paid under a legal obligation on borrowed money used for the purpose of earning income from a business or property, other than for exempt income or a life insurance policy, up to a reasonable amount.

A buyer who borrows to purchase shares or assets meets this rule when deciding how the loan and the purchase are arranged. Subparagraph 20(1)(c)(i) allows interest paid or payable under a legal obligation to pay interest on borrowed money used for the purpose of earning income from a business or property, excluding borrowed money used to acquire property whose income would be exempt or to acquire a life insurance policy. The deduction is the lesser of that interest and a reasonable amount in respect of it.

What the CRA’s folio adds

  • The borrowed money must be traced to a current use that qualifies, and the onus is on the taxpayer to show it
  • The CRA says a reasonable expectation of capital gains alone does not meet the purpose of earning income
  • For shares, the CRA generally considers interest on money borrowed to buy common shares deductible on the basis that there is a reasonable expectation of dividends when they are acquired, though not in every fact situation
  • The folio says the purpose test is not met where a corporation has asserted that it does not pay dividends, none are expected in the foreseeable future, and shareholders must sell to realize their value

Ask a tax adviser how the loan, the borrower and the target’s dividend policy fit this test. See can I deduct interest on a loan to buy a business.

Sources

This definition is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Government of CanadaGovernment
    Income Tax Act, R.S.C. 1985, c. 1 (5th Supp.)
    laws-lois.justice.gc.ca·Checked Oct 1, 2026
  2. 02
    Canada Revenue AgencyGovernment
    Income Tax Folio S3-F6-C1, Interest Deductibility
    canada.ca·Checked Oct 24, 2026

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