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Record W2998120706 · doi:10.32721/ctj.2019.67.4.okafor

Did the Adoption of IFRS Affect Corporate Tax Avoidance?

2019· article· en· W2998120706 on OpenAlexaffvenueabout
Oliver Nnamdi Okafor, Akinloye Akindayomi, Hussein A. Warsame

Bibliographic record

VenueCanadian Tax Journal/Revue fiscale canadienne · 2019
Typearticle
Languageen
FieldBusiness, Management and Accounting
TopicCorporate Taxation and Avoidance
Canadian institutionsUniversity of CalgaryToronto Metropolitan University
Fundersnot available
KeywordsBusinessAccountingTax avoidanceCorporate taxAccrualProfitability indexSample (material)International Financial Reporting StandardsPropensity score matchingEmpirical evidenceFinanceDouble taxation

Abstract

fetched live from OpenAlex

This article investigates whether the adoption of international financial reporting standards (IFRS) affected corporate tax avoidance in Canada. Based on a 3,200 firm-year data set of 400 publicly listed Canadian firms that adopted IFRS and 400 listed US firms, matched one-to-one using propensity score matching, the authors' regression results show that IFRS adoption was followed by a decrease in corporate tax avoidance in Canada, at least in the short run. The study finds a significant increase in cash tax paid in the post-adoption period by Canadian firms that adopted IFRS compared to US firms that used US generally accepted accounting principles. Additional regression results based on a small control sample of Canadian firms that did not adopt IFRS present collaborative evidence. The authors further test specific taxpayer attributes and accounting issues identified in Canada Revenue Agency internal memorandums—in particular, concerns that the adoption of IFRS may increase the risk of tax avoidance. While the authors find evidence that the IFRS firms that engaged in accrual management paid more taxes in the post-adoption period, their analysis provides no evidence of statistically significant relationships between IFRS adoption and tax avoidance associated with revenue management, ownership of foreign operations, industry membership, profitability, or impairment losses or writeoffs. Taken together, the authors' findings present preliminary but strong empirical evidence that IFRS adoption is associated with a decrease in corporate tax avoidance, at least in the short run.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.014
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.065
Threshold uncertainty score0.131

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.014
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.002
Science and technology studies0.0010.001
Scholarly communication0.0020.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.019
GPT teacher head0.180
Teacher spread0.161 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations4
Published2019
Admission routes3
Has abstractyes

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Same venueCanadian Tax Journal/Revue fiscale canadienneSame topicCorporate Taxation and AvoidanceFrench-language works237,207