Conflict of Interest in Research: What It Is & How to Declare It
Meet the Expert
Shruti Sharma
Academic Writing Coach & Research Communication Specialist
- Advises PhD scholars and faculty on publication ethics, COI disclosure, and responsible research conduct
- Familiar with COI policies of Elsevier, Springer, Wiley, BMJ, NEJM, and major Indian journals
- Helps researchers navigate complex disclosure situations involving industry-funded and collaborative research
A conflict of interest (COI) in research is a situation where a researcher's personal, financial, or professional interests could — or could appear to — bias their research decisions, findings, or reporting. Conflict of interest does not mean wrongdoing has occurred; it means a situation exists that needs to be transparent. Disclosure is the standard — and now mandatory — response. Understanding what constitutes a COI and how to declare it correctly is a core professional competency for every researcher.
Why Conflict of Interest Disclosure Matters
Research is built on trust. When readers, peer reviewers, funding agencies, and the public engage with research findings, they need to know about factors that could have influenced the study. Undisclosed COIs:
- Undermine the credibility of research findings
- Make it impossible for readers to contextualise the results appropriately
- Violate the principle of transparency that underpins research integrity
- Can lead to retraction, funding loss, or career-damaging investigations if discovered later
The goal of COI disclosure is not to penalise researchers who have outside interests — it is to enable informed evaluation of the research by everyone who uses it.
Types of Conflict of Interest in Research
| Type | Description | Examples |
|---|---|---|
| Financial COI | Direct financial benefit connected to the research topic or outcome | Employment, consulting fees, speaker payments, stock ownership, research grants from industry, patent royalties, board membership |
| Personal COI | Relationships that could bias objectivity | Reviewing a grant from your PhD supervisor; being a peer reviewer for a paper by a close friend, family member, or rival |
| Intellectual COI | Strong prior commitment to a theoretical position being studied | A researcher who has publicly argued for a specific theory reviewing a paper that contradicts it |
| Institutional COI | The researcher's institution has a financial interest in the research outcome | A university department that receives substantial funding from a company whose product the department is studying |
| Competitive COI | Being asked to review work by a direct competitor | Reviewing a grant proposal from another group working on the exact same problem you are |
What Must Be Disclosed? A Practical Guide
When submitting a research paper, most journals require disclosure of any financial or personal relationships in the past 3–5 years (check specific journal policy) that could be perceived as influencing your work. This typically includes:
| Must Disclose | Usually Does Not Need Disclosure |
|---|---|
| Research grants from commercial entities related to the study topic | Government grants with no commercial tie |
| Consulting fees from companies whose products are studied | General academic consulting in unrelated fields |
| Stock ownership in companies related to the study | Mutual fund holdings (no personal control) |
| Speaker bureau fees from industry | Honoraria from academic conferences |
| Employment or board membership at a relevant company | Past employment with no current financial relationship |
| Patent applications on the technology being studied | Patents in unrelated fields |
| Travel or gifts from a relevant company | Institutional travel funding |
How to Write a Conflict of Interest Statement
No Conflicts
If none of the authors have relevant interests to disclose:
"The authors declare no conflict of interest." OR "The authors declare no competing interests."
With Financial Conflicts
"[Author A] has received research funding from [Company X], which manufactures a product related to the subject of this study. [Author B] is a member of the scientific advisory board of [Company Y]. These relationships were disclosed to the corresponding author and have been reviewed by the journal. The funding organisation had no role in the design of the study, data collection, analysis, interpretation, or decision to publish."
With Personal Conflicts (e.g., Peer Review)
"[Reviewer name] recused themselves from peer review of this manuscript because of a professional relationship with one of the authors. The review was conducted by an independent third party."
COI Disclosure in Grant Applications (India)
In India, grant applications to SERB, UGC, DST, ICMR, and other funding bodies require COI disclosure as part of the application process. Specifically:
- The principal investigator must declare any commercial ties related to the research area
- Industry-funded PhD research must disclose the nature and terms of industry involvement
- Institutional COI (e.g., IP agreements with industry) should be declared by the host institution
- Panel members reviewing grant applications must declare and recuse from applications where they have a COI
When in Doubt, Disclose
The gold standard principle for COI management is: when you are unsure whether something needs to be disclosed, disclose it. The reputational and professional damage from an undisclosed COI discovered later is far greater than any perceived awkwardness from disclosing a relationship that reviewers ultimately consider minor. Many journals explicitly state this principle in their author instructions.
Related Reading from Thesis Ace Writers
Need help preparing a research paper submission with correct COI disclosure, authorship statements, and ethics declarations? Thesis Ace Writers provides expert guidance on publication ethics and responsible research conduct.
Frequently Asked Questions
Click a question to expand the answer.
A conflict of interest (COI) in research exists when a researcher has a competing interest — financial, personal, professional, or intellectual — that could, or could appear to, bias their research conduct, analysis, interpretation, or reporting. COI does not mean misconduct has occurred; it means there is a situation that reasonable observers would consider likely to influence judgment. The key principle is that undisclosed COIs undermine trust in research; disclosed COIs allow readers, editors, and peer reviewers to weigh the findings appropriately.
Types of conflict of interest: (1) Financial COI — direct financial benefit from the research outcome: employment by a company whose product is being studied, consulting fees, stock ownership, speaker's bureau payments, research funding from industry; (2) Personal COI — relationships with people involved: supervisor-student relationship, personal friendship or rivalry with a reviewer or author; (3) Intellectual COI — strong prior published commitment to a theoretical position being tested; (4) Institutional COI — when the researcher's institution has a financial stake in the research outcome; (5) Competitive COI — reviewing a grant or paper from a direct competitor. Financial COI is the most commonly disclosed and regulated.
Yes. PhD students must declare conflicts of interest in: (1) any research paper they submit for publication; (2) ethics committee applications; (3) conference presentations if the research is commercially funded; (4) grant applications as co-investigators. In practice, most PhD students declare 'none' because their research is funded by scholarships or institutional grants without commercial ties. However, if your PhD is industry-sponsored, or if you receive consulting fees, gifts, or travel grants from a company whose products are relevant to your research, these must be disclosed.
Standard conflict of interest declaration examples: No conflict: 'The authors declare no conflict of interest.' / 'The authors declare no competing interests.' With conflict: 'Author A has received research funding from [Company X]. Author B is a consultant for [Company Y]. These relationships did not influence the study design, data collection, analysis, interpretation, or reporting.' / 'Author C holds equity in [Company Z], which markets a product related to the subject matter of this article. This interest has been disclosed to and reviewed by the institution.' Always check your target journal's specific COI policy — some require more detailed disclosure.
Failing to disclose a relevant conflict of interest when submitting a research paper or grant application is a research ethics violation. Consequences can include: (1) Retraction of the paper by the journal; (2) Requirement to publish a correction notice; (3) Debarment from future funding by the grant agency; (4) Institutional investigation and disciplinary action; (5) Reputational damage — especially if the undisclosed COI is discovered after publication and reported in academic media. Several high-profile cases (particularly in pharmaceutical research) have involved severe consequences for researchers who failed to disclose industry funding.