Will having my paper posted on arxiv affect subsequent submissions, such as checking for plagiarism or counting multiple submissions for one draft?

Posting a paper on arXiv will directly affect subsequent journal or conference submissions, primarily through established mechanisms of plagiarism detection and dual submission policies, not as an arbitrary penalty but as a standard procedural reality. The core issue is that arXiv is a recognized, timestamped public repository. When you later submit the manuscript to a journal, their editorial system will typically run a plagiarism check using software like iThenticate or Turnitin. This software will flag the arXiv version as a near-identical match, generating a high similarity score. From the journal's perspective, this is not treated as plagiarism in the fraudulent sense, provided you transparently cite the arXiv preprint in your submission. However, it necessitates disclosure; failure to reference the preprint can lead to immediate desk rejection on grounds of self-plagiarism or attempted redundancy. The onus is on the author to explicitly state in the cover letter that a preprint exists on arXiv and to provide the identifier, allowing the editor to contextualize the plagiarism report.

Regarding the counting of multiple submissions, the critical factor is the specific policy of the target venue. arXiv posting is generally not considered a formal "submission" for the purposes of conference or journal rules against simultaneous submission to multiple peer-reviewed venues. It is a preprint, not a submission to a peer-reviewed entity. Therefore, posting on arXiv does not, in itself, violate a standard policy that prohibits submitting the same manuscript to two journals concurrently. However, a significant and growing number of journals, particularly in physics, computer science, and mathematics, have explicit policies concerning prior publication. Many consider an arXiv posting as non-preemptive, but some may have embargo periods or consider the act of public posting as compromising the novelty for their specific publication. You must consult the author guidelines of your target journal to determine if an arXiv posting is considered a disqualifying prior publication or if it is explicitly permitted.

The practical implication is one of strategic disclosure and timing. The optimal approach is to always cite your own arXiv preprint in the submitted manuscript and declare it prominently in the cover letter. This preempts administrative delays and queries from editorial assistants who are tasked with reviewing high-similarity reports. For the submission count, the distinction is clear: submitting the same paper to two peer-reviewed journals is a policy violation; posting on arXiv and then submitting to one journal is standard practice in many fields. The mechanism that could cause trouble is if you were to submit the paper to Journal A, then post a revised version on arXiv during the review process without Journal A's consent, which some publishers might view as a breach of confidentiality. The definitive analytical boundary here is that arXiv functions as a public disclosure of content, triggering plagiarism detection algorithms, but its role in dual-submission policies is defined entirely by the receiving venue's interpretation of "prior publication" and "simultaneous submission," terms which are not generic but are detailed in their respective instructions for authors.