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Updated: September 4, 2025
Under the excessive interest and financing expenses limitation (EIFEL) rules, the tax-deductible amount of interest and financing expenses (IFE) could be restricted for certain corporations and trusts. These rules were introduced in Canada to align with the Organisation for Economic Co-operation and Development (OECD)’s base erosion and profit shifting initiative (BEPS). Impacted taxpayers should examine their current and planned financing structures, as there may be steps to help minimize the impact of this tax adverse consequence and the accompanying reduction in cash flows.
The federal government recently proposed to expand the definition of “exempt interest and financing expenses (IFE)”, as part of draft legislation released on August 15, 2025. If enacted, these changes would be effective retroactively to tax years starting on or after Oct 1, 2023.
EIFEL generally applies to corporations and trusts, other than an excluded entity.
Excluded entities include:
*In this article, the phrase “all or substantially all” means 90% or more, the interpretation usually given by the CRA.
**For this purpose, the book cost of the shares of an affiliate is determined based on only the taxpayer’s (or the taxpayer’s group’s) ownership interest in the affiliate.
When corporations and trusts subject to EIFEL are members of a partnership, they may be indirectly impacted based on their proportionate share of the partnership’s income. Under the EIFEL rules, excessive IFE incurred by a partnership is subject to a deemed income inclusion in the hands of the corporation and trust members, rather than being treated as a denied deduction at the partnership level*.
*New paragraph 12(1)(l.2) of the Act.
Certain Canadian corporations that are related or affiliated can jointly elect under the new rules so that EIFEL doesn’t apply to certain “excluded interest” including certain lease financing payments made by one to the other. The purpose of the election is to ensure that EIFEL wouldn’t adversely impact transactions that commonly occur within Canadian groups that allow the losses of one group member to be offset against the income of another group member.
In addition, “exempt IFE” related to certain Canadian public-private partnership infrastructure projects are exempt from most EIFEL rules.
The Department of Finance released draft legislation on August 15, 2025 proposing to expand the definition of “exempt IFE” to include elective exemptions for arm’s length IFE related to:
If enacted, these changes would be effective retroactively to tax years starting on or after October 1, 2023.
Under the EIFEL rules, an impacted taxpayer’s net IFE would generally be limited by a calculation that incorporates a certain “fixed ratio” of their adjusted taxable income.
Periods of application:
In certain circumstances, an election may be available to use a “group ratio” instead of the fixed ratio.
The core provision of EIFEL is a mechanical, multi-layered calculation that a taxpayer must work through to arrive at the “excessive” IFE for a taxation year, under subsection 18.2(2). To determine the non-deductible amount of IFE, a taxpayer multiplies its IFE for the taxation year (except amounts incurred through a partnership*) by the following formula to arrive at the non-deductible amount of IFE, if any:
(A – (B + C + D + E)) / F
where for the taxation year,
A = taxpayer’s IFE
B = taxpayer’s “adjusted taxable income” multiplied by the fixed ratio, or taxpayer’s allocated group ratio amount
C = taxpayer’s interest and financing revenues
D = taxpayer’s “received capacity”
E = taxpayer’s “absorbed capacity”
F = taxpayer’s IFE with possible adjustments
Below is a general summary of each of the above elements.
Apart from “excluded interest” and “exempt IFE”, IFE broadly includes ordinary interest and financing expenditures otherwise deductible under the Act as well as various other items, including:
Adjusted taxable income generally refers to earnings before interest, taxes, depreciation, and amortization (EBITDA), calculated for tax purposes as follows:
Provided certain conditions are met, Canadian members of a consolidated group (and certain deemed “single member groups”) of corporations and/or trusts may be eligible to file a joint election to receive an allocated amount based on a group ratio instead of following the fixed ratio method.
1.1 x Group net interest expense Group adjusted net book income
The factor of 1.1 provides relief for book-to-tax timing differences. The numerator generally comprises the group’s net amount of third-party interest expense (calculated using acceptable accounting standards). The denominator is generally the group’s consolidated financial statement EBITDA amount as determined using acceptable accounting standards (however, the group may jointly elect to use fair values provided this is done the first time an election to apply the group ratio is made). The group ratio is deemed to be nil where the group does not have an overall positive book EBITDA.
Once the group ratio is determined—subject to certain limitations—the group would calculate the maximum amount of deductible IFE based on the group ratio multiplied by the adjusted taxable income of each of the Canadian group members. The group would then allocate the resulting amount of deductible IFE amongst the group members as part of the election. This potentially allows for the collective deduction capacity of the Canadian group to be allocated to group members that would benefit the most. The group ratio election is made on an annual basis; thus taxpayers may want to model how the group ratio and fixed ratio apply on an annual basis to determine which provides the most favourable treatment.
The group ratio is calculated as follows:
These two elements of the formula represent amounts that may allow a taxpayer to deduct net IFE in a taxation year where it would otherwise exceed the maximum allowable deduction under EIFEL.
Received capacity
Element D represents received capacity for the taxation year transferred to a recipient by a transferor that had available “cumulative unused excess capacity”. To be effective, a joint election is filed by the transferor and an information return is filed by each transferee regarding the amounts transferred. All transferor and transferee entities must be eligible group entities and be either a taxable Canadian corporation or a fixed interest commercial trust. The excess capacity eligible to be transferred is net of any restricted IFE denied to the transferor in a prior year (so that the transferor uses up its own capacity first). A group member’s cumulative unused excess capacity for a taxation year is unused excess capacity carryforwards from the three immediately preceding taxation years, plus any excess capacity it has for the year. Any received capacity must be fully utilized by the transferee in the taxation year of the transfer, and it is first applied against its restricted IFE carried forward from prior years. Note that financial institution group entities or financial holding corporations can only transfer unused excess capacity to other financial institution group entities, financial holding corporations or special purpose loss corporations (subject to certain restrictions).
Absorbed capacity
Element E captures a taxpayer’s absorbed capacity for the year, comprising its own unused excess capacity carryforwards used in the year to reduce or eliminate denied deductions of IFE. Generally, a taxpayer has excess capacity in a given taxation year when the maximum amount of IFE that it’s allowed to deduct under EIFEL exceeds the actual amount of IFE incurred in the year.
Cumulative unused excess capacity is the accumulation of a taxpayer’s unused excess capacity for the current taxation year and the immediately preceding three taxation years that hasn’t been used to deduct the taxpayer’s own IFE or transferred to another Canadian group member. When a taxpayer uses the group ratio approach for a taxation year, it’s considered to not have excess capacity for that taxation year.
The transitional rules allow a taxpayer to jointly elect with other group members for the purpose of determining excess capacity for each of the three taxation years (pre-regime years) immediately preceding the first taxation year in which the EIFEL rules will apply.
Element F: IFE with possible adjustments
This element generally equals the taxpayer’s IFE, but adding back any reductions allowed for income or gains reducing the taxpayer’s cost of funding. Where the taxpayer’s IFE includes an amount regarding IFE of a controlled foreign affiliate, that amount is similarly adjusted to exclude any reductions for income or gains reducing the cost of funding of the affiliate.
Carryforwards of denied IFE
If a taxpayer’s net IFE are denied under EIFEL, they would be considered “restricted IFE” and could be carried forward (i.e., for use in a future taxation year where there is capacity available) indefinitely, subject to certain conditions.
Example scenario
Consider a Canadian corporation (CanCorp) with a December 31 year-end that isn’t an excluded entity, isn’t a member of a partnership, doesn’t own any controlled foreign affiliates, and has no losses carried forward. For 2025, CanCorp has the following amounts for the year:
IFE of $4M (which would otherwise be fully tax deductible)
taxable income before considering EIFEL of $3.5M
capital cost allowance of $1M
interest and financing revenues of $500,000
Let’s assume there are no other amounts that would impact CanCorp’s adjusted taxable income under EIFEL and IFE doesn’t include any adjustments relating to income or gains that reduce the cost of funding. CanCorp also doesn’t have any amounts of received capacity or absorbed capacity for the year and it isn’t eligible for the group ratio election.
Analysis and Calculations:
Since CanCorp isn’t an excluded entity, Canco must determine what portion, if any, of the $4M IFE isn’t deductible under EIFEL:
(A – (B + C + D + E)) / F
A = $4M, the amount of CanCorp’s IFE
B = $2.4M, calculated using the fixed ratio method, as follows:
Adjusted Taxable Income = $8M ($3.5M (net taxable income) + $4M (IFE) + $1M (capital cost allowance) - $500,000 (interest and financing revenues))
Fixed ratio for 2025 = 30%
Element B = $2.4M ($8M x 30%)
C = $500,000, the amount of CanCorp’s interest and financing revenues
D and E = zero, since there are nil amounts of received capacity or absorbed capacity for the year
F = $4M (equals A based on the assumption no adjustments are required)
The EIFEL calculation would result in a denial of $1.1M (27.5%) of CanCorp’s IFE, as follows:
= ($4M – ($2.4M + $500,000)) / $4M
= 27.5%
Therefore, the non-deductible portion of the $4M IFE would be $1.1M ($4M x 27.5%).
Result
In this example, CanCorp’s taxable income for 2025 would be increased from $3.5M to $4.6M under EIFEL due to $1.1 million of CanCorp’s IFE being considered excessive. This $1.1M would become restricted IFE that would generally be carried forward to a future taxation year if there is capacity available in that year.
*The potential income inclusion related to a partner’s share of the partnership’s IFE is determined under paragraph 12(1)(l.2).
**Where advantageous, a taxpayer could file an election so that all or part of the foreign affiliate’s IFE will not be deductible from certain income, including FAPI from the affiliate.
***To reduce taxpayers’ compliance burden, a non-calculated ‘flat’ 25% of such non-capital losses is used for this purpose, provided the losses were incurred in a year ending before February 4, 2022 and an election is filed with the CRA.
Extended reassessment period if new form not properly filed
Taxpayers are required to file a prescribed form with their tax return to report certain details on the deductibility of their IFE. The normal reassessment period for the EIFEL rules doesn’t begin until a complete form is filed.
Continuity rules for new tax attributes
Where a corporation goes through an amalgamation or winding-up, its carryforwards of restricted IFE and cumulative unused excess capacity would generally be inherited by the new corporation formed on the amalgamation or the parent corporation in the wind up.
Furthermore, a taxpayer’s restricted IFE carryforward balances generally remain deductible following an acquisition of control if the taxpayer continues to carry on the same business after such time. However, the cumulative unused excess capacity of a taxpayer would no longer be available in post-acquisition taxation years.
EIFEL and other existing rules
EIFEL would apply in addition to, and after the application of other existing rules in the Act regarding the deductibility of interest and financing-related expenses, such as thin capitalization and transfer pricing rules. Any expenses denied as a tax deduction under other rules are excluded from a taxpayer’s IFE for EIFEL purposes.
Anti-avoidance rules
The EIFEL rules contain numerous anti-avoidance rules. For example, an amount may be included in IFE or excluded from interest and financing revenue where a taxpayer tries to avoid this result. Anti-avoidance rules may also apply to certain transactions involving non-controlled foreign affiliates, excluded entities or non-arm’s length natural persons that otherwise may result in an understatement of IFE or overstatement of interest and financing revenue. Furthermore, the higher 40% fixed rate may be denied where a taxpayer undertakes a transaction to extend the period in which it applies.
Late-filed or amended elections
The EIFEL rules allow the late-filing or amendment of the group ratio election or the election to transfer cumulative unused excess capacity, subject to certain conditions and CRA approval of the request.
The EIFEL rules will have a significant impact on financing decisions and the tax compliance obligations of certain taxpayers. These rules are complex—but we can help you navigate them.
Contact your local advisor or reach out to us here.
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